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Статті в журналах з теми "Plastic bags Environmental aspects"
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Weber Macena, Morgana, Rita Carvalho, Luísa Paula Cruz-Lopes, and Raquel P. F. Guiné. "Plastic Food Packaging: Perceptions and Attitudes of Portuguese Consumers about Environmental Impact and Recycling." Sustainability 13, no. 17 (September 4, 2021): 9953. http://dx.doi.org/10.3390/su13179953.
Повний текст джерелаАнотація:
The use of plastics for packaging has some advantages, since they are flexible and inexpensive. However, most plastics are of single use, which, combined with low recycling or reuse ratios, contributes substantially to environmental pollution. This work is part of a project studying the habits of Portuguese citizens concerning plastic food packaging and focuses on aspects related to sustainability. The survey was carried out via an online questionnaire about sustainability, recycling, and knowledge of the effects of plastic materials or their residues on the environment. The results were obtained based on a statistical analysis of the data. The participants tend to think about the negative impact of plastic packages on the environment; 39% sometimes do not buy plastic; and 30% try to look for alternatives. A substantial fraction, 81%, support the avoidance of plastic utensils and reduction in the use of plastic bags. Most participants have a good knowledge of recycling and strongly agree with the use of recycled materials, and 87% of respondents practice separation of different types of waste for recycling. Changing plastic consumption habits has not been an easy task. Nevertheless, it is expected that society will increasingly move toward sustainable habits, questioning its actions and considering their impact on the environment.
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Pimonenko, T., Yu Toptun, and Ya Us. "GENDER ASPECTS AND GREEN MARKETING: CASE FOR UKRAINE." Vìsnik Sumsʹkogo deržavnogo unìversitetu, no. 2 (2020): 133–40. http://dx.doi.org/10.21272/1817-9215.2020.2-16.
Повний текст джерелаАнотація:
The paper focused on the analysis of the gender factors under the developing of a marketing program to promote green goods. With the purpose to identify the scientific schools on this theme, the bibliometric analysis was conducted. In 2013 year and 2019 year, there was a significant increase in the number of publications which focused on the investigation on green marketing issues. Such trends could be explained by the growing level of interest of the world community in environmental issues. The findings allowed concluding that green marketing is considered by scientists in linking with such scientific areas as health economics, social development, economic development. The scientific community studied the gender and age parameters as key factors in the effective implementation of green marketing. In order to determine the role of gender and age factors in decision-making on the purchase of environmental goods, the survey of 176 students from Sumy State University (Ukraine) was conducted. The findings confirmed that women were more aware of environmental products than men, and 84.1% of women prefer to buy environmental products. It was determined that the most popular eco bags are shoppers – 54.5% among respondents, in second place – garbage sorting (49.4% among respondents), in third place – the rejection of plastic (48.3% among respondents). It was found that 77.8% of respondents are looking for eco-products in the category of food. Male respondents of all age are most looking for eco-goods in the category of household goods (55 respondents). Male respondents do not follow modern eco-trends and do not pay much attention to environmental labelling. Women, on the other hand, are more aware of environmental issues and often support eco-trends. The generalized results showed that one of the factors that reduce the effectiveness of green marketing was the low level of awareness of students on the nature and importance of eco-products. It was found that gender should be considered during the selection of communications channels with students and green marketing tools for the promotion of environmental products.
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Aurpa, Sehneela Sara, Sahadat Hossain, and Md Azijul Islam. "Effect of Plastic Waste on Volume Consumption of Landfill during the COVID-19 Pandemic." Sustainability 14, no. 23 (November 30, 2022): 15974. http://dx.doi.org/10.3390/su142315974.
Повний текст джерелаАнотація:
The COVID-19 pandemic has altered all aspects of human life since its breakout in March 2020 in the USA and around the world. There has been a tremendous increase in the use of plastic products as most of the PPE (masks, gloves, and other medical equipment) are made from plastic. Therefore, the generation of plastic waste was expected to increase significantly, which was also reported by many news agencies and organizations. This study determines the increase in plastic waste in municipal solid waste (MSW) and investigates its effect on landfill volume consumption during the COVID-19 pandemic. MSW samples were collected from the working face of Irving Hunter Ferrell landfill from May 2020 to December 2020. During every attempted sample collection, eight bags of MSW samples, each weighing 20–25 lbs., were collected. The MSW samples collected from the landfill were characterized and later the volume was estimated to evaluate the potential effects on landfill airspace. Based on the experimental investigations, it was found that plastic waste generation increased significantly during the pandemic (increasing from an 18.5% pre-pandemic level to 30% during the pandemic). Volumetric estimation suggests that the increased amount of plastic waste occupies 20% more volume in landfills. Quantification and estimation of the volume of the increased amount of plastic waste can be useful in predicting the impact of the pandemic on the lifetime of landfills.
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Paterson, AR. "Pruning the Money-Tree to Ensure Sustainable Growth: Facilitating Sustainable Development Through Market-Based Instruments." Potchefstroom Electronic Law Journal/Potchefstroomse Elektroniese Regsblad 9, no. 3 (July 5, 2017): 87. http://dx.doi.org/10.17159/1727-3781/2006/v9i3a2827.
Повний текст джерелаАнотація:
There is growing global recognition that market-based instruments (MBI), such as environmentally-related taxes, levies and user-charges, are viable tools for facilitating environmental management and, ultimately, sustainable development. These instruments seek to correct market failure to value, or accurately value, environmental goods and services that consequently lead to environmental concerns being accorded insufficient consideration in everyday market activities. South Africa has introduced various MBI, largely in the form of environmentally-related taxes pertaining to mining, agriculture, electricity supply, water supply, waste water discharge and various products such as fuel and plastic shopping bags. The primary rationale underlying the introduction of these instruments has been revenue generation. Government has, however, acknowledged that MBI have potential to achieve other objectives, namely to mould human behaviour, encourage more efficient resource use and improve actual environmental outcomes. In an effort to facilitate further debate on the issue, the National Treasury recently published a draft policy paper titled A Framework for Considering Market-Based Instruments to Support Environmental Fiscal Reform in South Africa. The Draft Policy Paper reflects a significant shift in fiscal policy and provides four broad tax reform options that could contribute towards meeting both fiscal and environmental objectives, namely: reforming existing environmentally-related taxes and charges in the transport and solid waste sectors; introducing new environmentally-related taxes in the electricity and waste water sectors; reforming legal aspects of non-environmentally-related taxes with perverse environmental incentives and creating incentives to improve environmental outcomes. This article briefly considers each of the above options set out in the Draft Policy Paper by focusing on the following questions: Why has there been a shift toward the use of MBI to achieve environmental outcomes? To what extent are they used currently in South Africa? What are the options for extending their use in South Africa? What are the prerequisites for their successful implementation?
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Pangaribuan, Firman, and Rut K. Pangaribuan. "PENGEMBANGAN ALAT PERAGA DARI LIMBAH PLASTIK UNTUK MATERI GEOMETRI BIDANG DATAR JENJANG SEKOLAH DASAR [CREATING TEACHING AID FROM PLASTIC WASTE ON PLANE GEOMETRY IN ELEMENTARY SCHOOL]." JOHME: Journal of Holistic Mathematics Education 5, no. 1 (June 29, 2021): 31. http://dx.doi.org/10.19166/johme.v5i1.3528.
Повний текст джерелаАнотація:
<p>Plastic waste that is difficult to decompose is a serious problem in environmental pollution. Geometry is a difficult subject for students, and plastic waste can be used as teaching aids to help students learn geometry. This research is a type of development research and aims to develop teaching aids from plastic waste in learning plane geometry in fifth grade elementary school. The results showed that the teaching aids developed were valid, practical and effective. Teaching aids are called practical if they meet the interesting, gradation, independent, auto-correction, and contextual aspects. The validity of the teaching aids is obtained through aspects of suitability, completeness, convenience, and clarity. Based on the assessment of the three validators, an average score of 3.50 was obtained so that the teaching aids were categorized as valid. The practicality of teaching aids by students showed that 95% of students stated that they were interesting, graded, and independent, 74% of students stated that it was auto-correction and 91% stated that it was contextual. The effectiveness of the teaching aids can be seen from the significant difference between the average pre-test score of 46.2 and the post-test average score of 77.3. The props from the plastic waste that were developed are stored and will be used later for the same lesson in the future.</p><p><strong>BAHASA INDONESIA ABSTRACT: </strong>Limbah plastik yang sulit terurai adalah masalah yang serius dalam pencemaran lingkungan. Geometri merupakan pelajaran yang sulit bagi siswa, dan limbah plastik dapat digunakan sebagai alat peraga untuk membantu siswa dalam belajar geometri. Penelitian ini adalah jenis pengembangan dan bertujuan mengembangkan alat peraga dari limbah plastik dalam pembelajaran geometri bidang datar di kelas V SD. Hasil penelitian menunjukkan bahwa alat peraga yang dikembangkan valid, praktis dan efektif. Alat peraga disebut praktis jika memenuhi aspek menarik, bergradasi, mandiri, <em>auto correction</em>, dan kontekstual. Kevalidan alat peraga diperoleh melalui aspek kesesuaian, kelengkapan, kemudahan, dan kejelasan. Berdasarkan penilaian tiga validator diperoleh skor rata-rata 3,50 sehingga alat peraga dikategorikan valid. Kepraktisan alat peraga oleh siswa menunjukkan bahwa 95% siswa menyatakan menarik, bergradasi, dan mandiri, 74% siswa menyatakan <em>auto correction </em>dan 91% menyatakan kontekstual. Keefektifan alat peraga terlihat dari perbedaan yang signifikan antara skor rata-rata pre tes 46,2 dan skor rata-rata pos tes 77,3. Alat peraga dari limbah plastik yang dikembangkan disimpan dan akan digunakan kemudian untuk pelajaran yang sama di kemudian hari.</p>
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Taslacı, Nazmi, Yaşar Sarı, and Davut Uysal. "How Manufacturers Haste and Consumers Taste Turn into Environmental Waste: a Waste Analysis of Picnickers in Eskişehir, Turkey." European Journal of Economics and Business Studies 5, no. 1 (August 30, 2016): 134. http://dx.doi.org/10.26417/ejes.v5i1.p134-142.
Повний текст джерелаАнотація:
Since the modern life in the urban areas is fast and exhausting, people who are tired of the routine city life tend to involve in the recreational activities provided by the local governors in their neighborhood. One of these facilities is having a picnic in the picnic areas in the countryside. However, the expansion of these services produces great amount of rubbish and lacks of proper environmental management, too. This study presents an analysis of the waste generated by the visitors in the picnic areas of Eskişehir in Turkey. Based on observations in various different picnic areas, this study highlights the unsatisfactory aspects of the present situation in terms of the amount and the composition of the picnic waste scattered around. There is also a concern over the expansion of picnic activities in the area that would result in more waste being generated. The characteristics of domestic waste and people’s environmental awareness were studied by observing picnickers and analyzing over lefts they left in the picnic areas. The results showed that the wastes analyzed get accumulated in such categories like chicken packages, bottles, plastic bags, wet towels, diapers and cigarette butts. The motives that drive visitors to be ignorant about their wastes were laziness, carelessness, being accidental and unconsciousness. Therefore, both manufacturers and consumers need to be responsible for this environmental pollution in the picnic areas. Besides educating people about the issue in alternative ways, it is further suggested that governors must make manufacturers feel the need to touch a raw nerve by redesigning their products, and organizing social responsibility facilities and taxing products which are the most frequently found as waste in the recreational areas.
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Dębska, Bernardeta, and Guilherme Jorge Brigolini Silva. "Mechanical Properties and Microstructure of Epoxy Mortars Made with Polyethylene and Poly(Ethylene Terephthalate) Waste." Materials 14, no. 9 (April 25, 2021): 2203. http://dx.doi.org/10.3390/ma14092203.
Повний текст джерелаАнотація:
The article describes the results of a study to determine the simultaneous effect of polyethylene terephthalate waste (PET) and polyethylene (PE) on the strength characteristics and bulk density of epoxy mortars. In these mortars, 9 wt.% of the polymer binder was replaced by glycolysate which was made from PET waste and propylene glycol. Additionally, 0–10 vol.% of the aggregate was substituted with PE agglomerate made from plastic bags waste, respectively. The modification of the composition of epoxy mortar has a special environmental and economic aspect. It also allows to protect natural sources of the aggregate, while reducing the amount of waste and reducing problems arising from the need to store them. The resulting composite has very good strength properties. With the substitution of 9 wt.% of resin and 5 vol.% of sand, a flexural strength of 35.7 MPa and a compressive strength of 101.1 MPa was obtained. The results of the microstructure study of the obtained mortars constitute a significant part of the paper.
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Ssemugabo, Charles, Solomon Tsebeni Wafula, Grace Biyinzika Lubega, Rawlance Ndejjo, Jimmy Osuret, Abdullah Ali Halage, and David Musoke. "Status of Household Solid Waste Management and Associated Factors in a Slum Community in Kampala, Uganda." Journal of Environmental and Public Health 2020 (May 6, 2020): 1–10. http://dx.doi.org/10.1155/2020/6807630.
Повний текст джерелаАнотація:
Background. Only a third of the total waste generated in slum communities in Kampala is collected and disposed of to the landfill every month. This study assessed the status of household solid waste management and associated factors in a slum community in Kampala, Uganda. Methods. We conducted a community-based cross-sectional study involving 395 households using a semistructured questionnaire and an observational checklist. Proper solid waste management was determined based on possession of waste collection and storage receptacle; collection receptacle ability to minimise nuisances (covered); segregation of waste; presence of flies and other vectors; and collection receptacle fill status. Prevalence rate ratios and their 95% confidence intervals were used as a measure of association. Results. Only, 41.3% (163/395) of the households exhibited proper waste management practices. The majority of the households 85.8% (339/395) owned solid waste storage receptacles, most of which were sacs 61.7% (209/339) and would minimise nuisances 72.9% (245/339). The main type of waste collected was biodegradable materials 56.7% (224/395). The majority of the households 78.7% (311/395) did not segregate their waste. Solid waste was mainly transported to the collection point by pulling the collecting sac 54.4% (215/395). The city authority 73.9% (292/395) and private companies 12.9% (51/395) were the major entities collecting waste. Factors associated with proper waste management were collecting waste in plastic containers (adjusted PR = 1.27, 95% CI (1.04–1.55)), polythene bags (adjusted PR = 0.26, 95% CI (0.14–0.47)), and paper bags or metallic bins (adjusted PR = 0.13, 95% CI (0.03–0.44)) as well as awareness of solid waste management laws (adjusted PR = 1.49, 95% CI (1.20–1.85)) and the dangers of improper solid waste management (adjusted PR = 2.15, 95% CI (1.51–3.06)). Conclusion. Solid waste management was generally poor. As such, a cascade of interventions that address knowledge, physical, and behavioural aspects of solid waste management is required to improve its management in slum communities.
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Michaliszyn-Gabryś, Beata, Janusz Krupanek, Mariusz Kalisz, and Jonathan Smith. "Challenges for Sustainability in Packaging of Fresh Vegetables in Organic Farming." Sustainability 14, no. 9 (April 28, 2022): 5346. http://dx.doi.org/10.3390/su14095346.
Повний текст джерелаАнотація:
The policy of circular economy focuses on phasing out fossil-based packaging and replacing it with more sustainable alternatives. Companies face the challenge of choosing packaging for their products that are functional and affordable, and place relatively less pressure on the environment. This is especially important for organic farms that make voluntary commitments to undertake sustainable decisions regarding practices and methods of farming and types of packaging used. This publication attempts to analyze the determinants of the choices of sustainable packaging solutions made by organic farming companies with the example of Scilly Organic, an organic micro farm from the Isles of Scilly, United Kingdom—a producer of organic vegetables. There are many options for fresh vegetable packaging, which include fossil-based packaging, bio-based packaging, and packaging manufactured from material that is a mixture of synthetic, natural, or modified polymers. Biodegradable packaging, including compostable ones, is currently of particular interest because, when separated and disposed of in the correct manner in the waste management phase, they have sustainability potential. Biodegradable plastics constitute over 55.5% of global bioplastics production. Packaging is the largest market segment for bioplastic, with 48% of the total bioplastics market in 2021. Although the use of biobased packaging brings some advantages, it also comes with certain limitations that are the subject of intensive research. In this publication, the Life Cycle Assessment (LCA) tool was used and a critical review of the literature was carried out. Based on the analysis, the key factors and aspects influencing the environmental performance of selected types of packaging were identified. The LCA was carried out for the three selected packaging types, including low-density polyethylene (LDPE) bags, polylactic acid (PLA) bags, and polyester starch biopolymer (PCSB) bags. The research showed that the selection of more sustainable packaging is not straightforward. The analysis performed was the basis for providing recommendations for improving the sustainability of organic farms with regard to the selection of packaging for fresh vegetables. The critical processes in the life cycle that have to be considered are, in the first place, the production of polymer-based materials, and to a lesser extent, the production of the packaging bags and post-consumption waste utilization. In the case of PLA bags, 51% of the total impact is attributed to the production of polymer material. For starch polyester bags, this share is 58%, and for LDPE it constitutes 41% of the total score. At the same time, the choice of packaging should be made in the context of the specific properties of the packaging material, the requirements for disposal methods, and local waste management systems.
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Shakle, Sunita. "ENVIRONMENTAL ISSUE-PLASTIC." International Journal of Research -GRANTHAALAYAH 3, no. 9SE (September 30, 2015): 1–2. http://dx.doi.org/10.29121/granthaalayah.v3.i9se.2015.3182.
Повний текст джерелаАнотація:
Polythene is the most common plastic, the annual global production is approximately 60 million tones, and its primary use is in packing.
Plastic bags pollute soil and waters and kill thousands of marine generalize plastic bags are not biodegradable they clog water ways, spoil the land scape and end up in landfills. Where they may take 1000 year or more to break down into ever smaller particals that continue to pollution the soil and water.
Дисертації з теми "Plastic bags Environmental aspects"
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Dai, Lai-man Raymond, and 戴勵文. "A review of the use less plastic bags campaign." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31254007.
Повний текст джерела
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Wang, L. Y. Jennifer, and 王立怡. "An international comparison of environmental policy approaches and itsimplications for Hong Kong: the case ofplastic shopping bag reduction." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B31256028.
Повний текст джерела
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Ng, Ting-leung Gordon, and 吳庭亮. "An assessment of strategies for the management of plastic bag wastes in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1994. http://hub.hku.hk/bib/B31234392.
Повний текст джерела
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Aligbe, Margaret Ojochide. "Investigating the use of plastic bags in Lagos, Nigeria." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-443525.
Повний текст джерелаАнотація:
Lagos State in Nigeria is faced with the massive problem of waste from plastic bags which causes the yearly flooding displacing thousands of residents and causes diseases like malaria. Plastic bags which became popular because of their versatility, affordability and durability have now become a major source of environmental degradation requiring the use of more environmentally friendly alternatives like Jute, woolen bags, and biodegradable types of plastic. The Nigerian legislature proposed a plastic bag prohibition bill to reduce the manufacture and use of plastic bags with fines and time behind bars which is Nigeria’s first attempt at managing the menace of single-use plastic bags. The goal of this study is to determine reasons for the continued use of plastic bags to contribute to better management of plastic bags waste. It further investigates the available alternatives and willingness of the residents of Lagos to embrace some alternatives to plastic bags. Anonymous online surveys were distributed across social media platforms and interviews involving shop owners described as “givers” who are off social media in this study was carried out. Responses from both quantitative and qualitative sources have been analyzed using the Nvivo software and connection circles have been developed to describe feedbacks within the system. Results showed that the lack of alternatives and convenience are the biggest reasons for the continued use of plastic bags in Lagos, Nigeria. The results further show that the proposed bill has not made provision of alternatives to plastic bags and incentives for manufacturers of plastic bags revealing poor public participation in policy-making of this nature. Overall, respondents have indicated a willingness to embrace alternatives to plastic bags and have mentioned that the situation is worsened by poor waste management in the state. Recommendations included more extensive research into the use of plastic bags with a bigger sample size with both online and offline platforms. This could encourage effective public participation in policy-making important for creating useful nudges in behavioural change in the shift from plastic bags.
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Wong, Wing-sum, and 黃詠森. "Environmental levy and green citizenship on plastic shopping bags behaviours in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B48543792.
Повний текст джерелаАнотація:
The Environmental Levy Scheme on Plastic Shopping was enforced in July 2009. The Levy aimed to create a direct fiscal disincentive to reduce the indiscriminate use of Plastic Shopping Bags and encourage consumers to switch to reusable shopping bags. In theory, fiscal instruments are more efficient and effective to change people’s behaviour, but its impacts towards attitude are still in question. Also, the level of green citizenship, which emphasising that people have the responsibility to protect and sustain the environment, is a good indicator to know people’s attitudes towards the environment, but the Hong Kong government tends to rely on fiscal disincentives to change people’s behaviour, Green Citizenship had never been addressed. Green citizenship is a personal commitment to learn more about the environment and to take responsible environmental action. Environmental citizenship encourages individuals, communities and organizations to think about the environmental rights and responsibilities we all have as residents of the planet Earth (Environmental Canada, 2006). This study carried out a questionnaire research to identify the policy effect that the Levy in Hong Kong have on environmental attitudes and behaviours, as well as to identify the relative impact of economic incentive versus Green Citizenship on green attitudes and behaviours. The survey was conducted from 25th April to 9th May 2012 for two weeks in the form of internet survey. The research found that the Environmental Levy Scheme on Plastic Shopping Bags affected citizens’ behaviour and attitude to reduce the use of plastic shopping bags, and also changed people’s behavioural intention to act pro-environmentally, if their beliefs are strong enough to override the disadvantages brought by pro-environmentally actions. However, the level of green citizenship in Hong Kong is still in a private level, the sense of green citizenship of the society is still weak, thus, a comprehensive education programme should be carried out by both the society (bottom-up) and the government (top-bottom) to raise the level of green citizenship of the society.published_or_final_version
Environmental Management
Master
Master of Science in Environmental Management
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Bovinder, Ylitalo Linnéa, and Gerdin Peter. "No Plastic Bags : The Influence of Different Factors on Consumer Attitudes towards an Environmental Initiative." Thesis, Umeå University, Umeå School of Business, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-24994.
Повний текст джерелаАнотація:
Environmental issues have within the recent years become a frequently debated matter and corporate social responsibility (CSR) has become a new determinant for consumers purchase decisions. As a consequence of this, ever more companies have begun to implement different CSR initiatives in order to take responsibility for the environment. The arguments differ among researchers whether it is actually profitable for companies to invest in CSR initiatives.
In this study we have based upon the functional theory of attitudes and identified different factors that are likely to affect consumer attitudes towards an environmental CSR initiative and formed a model for this. The model postulates four main factors that are likely to affect consumers attitudes towards an environmental initiative; which attitude a consumer holds towards the actual product (in this case the paper bags) in question, the extent to which a consumer considers environmental responsibility to be important, the extent to which a consumer considers environmental issues to be a threat to her-/himself and the amount of information a consumer receives about the initiative. To test our model we used a quantitative approach and investigated the consumer attitudes towards the initiative no plastic bags at the shopping centre Strömpilen, Umeå.
We found that consumers in general are very positive towards the initiative. We then looked closer into what parts of our model that had significant impact on consumer attitudes towards the concept. The Chi-Square tests showed that three of four parts in the model could be verified. These parts were; the consumer’s attitude towards the actual product (in this case the paper bag), how important environmental responsibility is to a consumer and to what extent a consumer sees environmental issues as a threat to her-/himself. The fourth part of the model; the amount of information a consumer has received could not be verified. Thus the model was modified and was in the end constituted by the three parts that had been statistically verified.
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Bouraleh, Maryan, and Elsa Forsgren. "Miljömedvetenhet och beteende vid konsumtionen av bärkassar i livsmedelsbutiker : En enkätstudie." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-230930.
Повний текст джерелаАнотація:
Denna studie undersöker konsumenternas beteende vid köp av bärkassar i livsmedelsbutiker. Konsumtionen av bärkassar är ett problem på flera sätt, denna rapport kommer undersöka konsumenternas kunskap om resurs och energiåtgång vid tillverkning, miljömedvetet beteende och konsumenternas förslag till beteendeförändring vid konsumtion av bärkassar. Syftet är att undersöka om kunskap får konsumenten att agera på ett visst sätt. För att kunna utföra arbetet har en enkätundersökning utförts, både i en vald ICA butik och på Facebook. Enkäten innehöll frågor om konsumtionen, som till exempel vad konsumenterna brukar köpa för bärkasse och hur ofta. Även hur konsumenten tagit sig till butiken är av intresse likaväl konsumentens tidigare kunskaper om resursåtgång vid tillverkning kommer att frågas efter. Sist kommer konsumentens inställning till ett infört förbud efterfrågas och vad som skulle kunna få personen att minska sin egen konsumtion. Studien har kommit fram till att det inte finns några kunskapsskillnader mellan de som köper och de som inte köper bärkassar. Det finns alltså ett value-action gap, konsumenten är medveten om att konsumtionen inte är hållbar men agerar inte utefter sin kunskap. Det mest effektiva sättet att minska konsumtionen anses därmed inte vara bättre kunskap om miljöpåverkan. Istället föredras ett förbud mot plastpåsar baserade på olja. Följaktligen borde butiker endast erbjuda miljökassar och de svenska papperspåsarna. Relativt få av de som deltagit i enkäten är mot ett förbud av engångsbärkassar och eftersom även konsumtionen av miljökassar och svenska papperspåsar har en negativ miljöpåverkan är också minskad konsumtion av alla dessa att föredra. Detta kan åstadkommas med ett ökat pris.This study examines consumers’ behavior in the purchase of grocery bags in food stores. Consumption of all types of bags is a problem in several ways, and this report will examine consumers’ knowledge about resource and energy use in manufacturing, pro-environmental behavior and consumers’ suggestions to behavioral change while purchasing grocery bags. The purpose is to investigate whether knowledge causes the consumer to act in a certain way. To achieve the purpose, a survey was conducted, both in a selected ICA store and on Facebook. The survey contained questions about consumption such as, what bag consumers usually buy and how often. Even how the consumer went to the store is of interest as well as the costumers’ knowledge previous to the study regarding resource utilization in manufacturing. Lastly, the consumers’ attitude towards a potential ban was asked for, as well as what could make the person reduce his or her own consumption. The study found that there is no difference in knowledge between those who buy bags and those who do not. This leads to the conclusion that there is a value-action gap, one is aware that the consumption is not sustainable, but one does not act according to his or her knowledge. Thus, the most effective way of reducing consumption is not considered to be a better knowledge of environmental impact. Instead, a ban on plastic bags based on oil is preferred. Hence, environmental bags and Swedish paper bags would be more promising options. Relatively few of those who participated in the survey are against a ban on disposable bags. Because even the consumption of environmental bags and Swedish paper bags has a negative impact on the environment, a reduction of consumption of all bags is therefore preferable. This can be achieved with an increase in price.
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Nhamo, Godwell. "Environmental policy processes surrounding South Africa's plastic bags regulations : tensions, debates and responses in waste product regulation." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1008051.
Повний текст джерелаАнотація:
This study was conducted in South Africa. South Africa is the first country within the Southern African Development Community to have regulated plastic shopping bags waste through the imposition of both a standard on thickness and a levy. Given this scenario, the Plastic Bags Regulations present an illustrative case for researching complexity, uncertainty and controversies surrounding a new trend in environmental policy making, namely waste product regulation. The thesis focuses on understanding and investigating tensions, debates and responses emerging from the policy process as actors and actor-networks put not only the Plastic Bags Regulations asfocal actant (token) but also other actants and actant-networks as well. To this end, a research question that addressed environmental policies, tensions, debates and responses that informed the development of South Africa's Plastic Bags Regulations was spelt out. The research objectives included the need to: (I) analyse selected international environmental policy processes surrounding plastic shopping bags litter and waste regulation and how these influenced developments in South Africa; (2) identify actors, actants and actor/actant-networks that shaped and were being transformed by South Africa's Plastic Bags Regulations and explain the tensions, debates and responses arising in the policy processes; (3) identify environmental policy outputs and assess outcomes emerging from the formulation and implementation of South Africa's Plastic Bags Regulations; and (4) establish patterns in environmental policy process reforms around South Africa's Plastic Bags Regulations. The language of actors (human), actants (non-human) and actor/actant-networks brings to the fore the aspects of processes and relationships that exist around them. As such, insights from the actor/actant-network theory (AANT) were drawn upon to inform the research. AANT enquiry framework collapses binaries such as nature/society, art/science, structure/agency and global/local historically associated with a particular type of social theory. AANT also denies that purely technical, scientific or social relations are possible (the notion of quaSi-objects or token). Data sets were generated following' the Plastic Bags Regulations as token actant with time frames ranging from prior to, during and after the formulation of the regulations. Similarly, data analysis drew insights from AANT's four moments of translation namely problematisation, interessement, enrolment and mobilisation, with the intervention theory providing an evaluative perspective that complemented AANT. The findings were that after the promulgation of the first draft of the Plastic Bags Regulations in May 2000, tensions emerged around the nature of regulation (whether command and control - preferred by government or self regulation - preferred by industry and labour). In this regard the latter group raised concerns about jobs, income and equipment loss as well as the need to have a holistic approach to waste management rather than targeting a single product at a time whilst the former maintained that this would not be so. As such, education, awareness and stringent antilitter penalties were proposed by industry and labour as sustainable responses to the problem of plastic shopping bags waste rather than regulation. These debates continued and resulted in minor amendments to the original regulations as finalised by Government in May 2002. However, industry and labour continued lobbying government resulting in the conclusion of the Plastic Bags Agreement in September 2002 and the ultimate repulsion of the May 2002 regulations in May 2003. As revealed by this research, these responses led to broader social responses and further tensions as demand for plastic shopping bags went down by about 80% although an estimated 1000 jobs were lost and a number of companies lost equipment and business (with some closing down) following the implementation of the regulations. During implementation, debates emerged around the need to promote locally made carry facilities with two alternatives in sight namely: the Green Bag and the Biodegradable Plastic Bag. Debates also took place regarding enforcement of the new law resulting in the amendments of various pieces of legislation including the Environmental Conservation Act, Environmental Management Act and the Revenue Laws Act. Overall, a 15-year policy reform cycle and sub-cycles was determined. The research also established that the government considered the regulations a success and was already implementing simi lar initiatives to regulate other waste products, among them, used tyres, used oil and glass, confirming the trend towards waste product regulation in South Africa. From these research findings, a series of conceptual frameworks were drawn up to clarify the nature of tensions, debates and responses surrounding certain lead actors, actants and actorlactant-networks. Some of the conceptual frameworks that emerged around the actors and actor-networks include Organised Government, Organised Industry and Organised Labour. Conceptual frameworks that emerged around key actants and actant-networks include the Integrated Pollution and Waste Management, Plastic Bags Regulations as well as the discourses surrounding the Green bag and biodegradable plastic bags. The thesis concludes by reflecting on how the above and the grand actor/actant-network conceptual frameworks emerging from this research might be adopted with varying degrees of flexibility to research environmental and waste management policy processes in different waste product regulation set-ups.KMBT_363
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Jogner, Carolina, and Zin Ibrahim. "En förstudie för återvinning av plastpåsar i Borås och dess miljöpåverkan." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-13849.
Повний текст джерелаАнотація:
Under den senaste tiden har man tagit upp plastbärkassars negativa miljöpåverkan, i EU men även lokalt i Borås. EU anser att plastpåsar är skadliga för miljön och har tagit fram direktiv som gör att alla medlemsstater måste vidta åtgärder för att begränsa förbrukningen av plastpåsar. För att man ska kunna fatta rätt beslut krävs det att man ökar kunskapen om vilka åtgärder som krävs och vilka åtgärder som är mest effektiva för att minska förbrukningen.I detta examensarbete är syftet att jämföra plastpåsars miljöpåverkan mot bärkassar i olika material samt att se över hur plastpåsar hanteras idag, presentera en metod för att utföra en insamling av plastpåsar för återvinning i Borås och utreda om det är miljömässigt lönsamt. Resultaten visar att bestämandet av en bärkasses miljöpåverkan är en mycket komplex fråga då väldigt många faktorer måste vägas in. Vi ser även att införandet av ett separat återvinningssystem för plastpåsar inte är det ultimata då det skulle försvåra logistiken samt kräva komprimering av plastpåsarna för att minska deras volym. Det befintliga återvinningssystemet för plast där man blandar hårdplast och mjukplast är mera lämpligt att använda då det ger en tätare blandning.The negative environmental impact of plastic bags has recently been brought up in the EU but also locally in Borås. The EU considers that plastic bags are hurtful for the environment and has developed directive to reduce the consumption of plastic bags which all member states must follow. In order to be able to make the correct decisions it is necessary to have the accurate information of what measures are necessary to reduce consumption. In this thesis, the aim is to compare the environmental impact of plastic bags compared to bags in various materials and to review how plastic bags are managed today, present a method for how to collect plastic bags for recycling in Borås and investigate whether it is environmentally viable. The results show that the determination of the environmental impact of different bags is a very complex issue because so many factors must be considered. We also see that the introduction of a separate recycling system for plastic bags is not the ultimate method when it would complicate logistics and require compression, to reduce their volume. The existing recycling system for plastic which blends hard plastic and soft plastic, is more convenient to use as it provides a denser mixture.
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Cheng, Hoi Po 1975. "Popcorn for cushioning purpose." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81610.
Повний текст джерелаАнотація:
In the packaging industry, cushioning products are usually made of plastic materials, such as polystyrene. The insulation and lightweight character make it more popular and convenient to use. However, the extensive use of it creates more waste leading to an environmental problem. Usually the cushioning foams are discarded after being used for inbox protection as packaging material; eventually they end up in a landfill. Most plastic foams are not biodegradable, which cannot be composted and will create more and more waste that affects the ecological system. In the mean time, foams made up of bio-degradable materials are considered. In general, biodegradable plastics are starch-based or cellulose-based, and the biodegradable components can be found in corn (e.g. corn starch, and corn cob). Instead of extracting the corn component, here popped corn kernel will be investigated for its suitability in packaging applications.
Книги з теми "Plastic bags Environmental aspects"
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Kirsch, F. William. Waste minimization assessment for a manufacturer of printed plastic bags. Cincinnati, OH: U.S. Environmental Protection Agency, Risk Reduction Engineering Laboratory, 1990.
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Kirsch, F. William. Waste minimization assessment for a manufacturer of printed plastic bags. Cincinnati, OH: U.S. Environmental Protection Agency, Risk Reduction Engineering Laboratory, 1990.
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Funaki, Kentoku. "Reji-bukuro" no kankyō keizai seisaku: Yōroppa ya Kankoku Nihon no reji-bukuro sakugen no kokoromi. Tōkyō: Risaikuru Bunkasha, 2007.
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Unlimited vision: Ideas for building inclusive, sustainable communities. Vancouver: Columbia Institute, Centre for Civic Governance, 2010.
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Douglis, Carole. Theo and the giant plastic ball. Nairobi, Kenya: United Nations Environment Programme, 2004.
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Hans, Gaensslen, and Sordo Magdalena, eds. Polyvinylchloride: Environmental aspects of a common plastic. London: Elsevier Applied Science, 1992.
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Tötsch, Walter. Polyvinylchloride: Environmental Aspects of a Common Plastic. Dordrecht: Springer Netherlands, 1992.
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Palmer, Joy. Recycling plastic. New York: F. Watts, 1990.
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Upper Room Education for Parenting (Organization), ed. Caution, I brake for plastic bags: Real-life encouragement for parents and families. Derry, N.H: Upper Room Education for Parenting, 1994.
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Pesky plastic: An environmental story. [Place of publication not identified]: Great Books 4 Kids, 2013.
Знайти повний текст джерелаЧастини книг з теми "Plastic bags Environmental aspects"
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Muthu, Subramanian Senthilkannan, and Yi Li. "Assessment of Functional Aspects of Shopping Bags." In Assessment of Environmental Impact by Grocery Shopping Bags, 55–76. Singapore: Springer Singapore, 2013. http://dx.doi.org/10.1007/978-981-4560-20-7_4.
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Yang, Zining, and Sekwen Kim. "Diffusion of Environmental Protectionism: Single-Use Plastic Bags Ban Policy in California." In Advances in Intelligent Systems and Computing, 87–94. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-20148-7_9.
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Dorn, Maximilian. "Environmental Aspects of Initiators for Plastic Manufacture and Processing." In The Handbook of Environmental Chemistry, 147–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/698_2009_13.
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Takada, Hideshige, Misaki Koro, and Charita S. Kwan. "Marine Plastic Pollution: Chemical Aspects and Possible Solutions." In Current Topics in Environmental Health and Preventive Medicine, 83–92. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-6249-2_10.
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Gardeli, Anna, Spyros Vosinakis, Konstantinos Englezos, Dimitra Mavroudi, Manolis Stratis, and Modestos Stavrakis. "A Week Without Plastic Bags: Creating Games and Interactive Products for Environmental Awareness." In Advances in Computer Entertainment Technology, 128–38. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-76270-8_10.
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Bank, Michael S., and Sophia V. Hansson. "The Microplastic Cycle: An Introduction to a Complex Issue." In Microplastic in the Environment: Pattern and Process, 1–16. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-78627-4_1.
Повний текст джерелаАнотація:
AbstractThe microplastic cycle was originally and formally introduced and defined as a novel concept and paradigm for understanding plastic pollution and its fluxes across ecosystem reservoirs. This concept has now been expanded to include macroplastic particles and links all aspects of the fate, transport, and effects of plastic pollution, including source-receptor models in the environment, and expanded on previously established perspectives that viewed the plastic pollution issue in a less integrated manner. The value of this paradigm is that this perspective integrates three basic scientific spheres: environmental chemistry, biology (i.e., trophic transfer), and human health. The goal of this chapter is to introduce readers to the microplastic pollution problem and to outline the microplastic cycle as a concept and holistic paradigm for addressing this ubiquitous environmental and potential public health problem. The specific objectives of this chapter were to (1) introduce this volume and its chapters by outlining the microplastic pollution issue in the context of the entire plastic cycle; (2) evaluate fluxes of microplastics across different ecosystem compartments, including the atmosphere, lithosphere, hydrosphere. and biosphere, including humans; and (3) provide insights on public policy and potential solutions to the microplastic pollution problem.
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Singh, Shivom, Prachi Dixit, Kajal S. Rathore, and Neha Sharma. "Detrimental Impact of Plastic Outcome on Agriculture." In Handbook of Research on Environmental and Human Health Impacts of Plastic Pollution, 122–41. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-5225-9452-9.ch007.
Повний текст джерелаАнотація:
Generally, plastic is made up of non-biodegradable chemicals i.e. polyolefin, polyester, and polyurethanes. This is hardly surprising since the use of polythene bags has infiltrated all sectors of economy, agriculture, consumer goods, and especially in packaging, where polythene is increasingly replacing jute, paper, wood, and glass. Polythene bags can release harmful chemicals into the surrounding agricultural soil, which can then seep into ground water or other surrounding water sources. This can cause serious harm to the species that drink this water. Unlike natural organic material they do not disintegrate with time but keep accumulating in the environment. So it is very difficult to dispose of the polythene bags. If the polythene bags burned in agriculture land, they release harmful chemicals like Cd, Pb, CO, NOX and SO2, which causes many diseases in animals as well as in human beings. The accumulation of polythene bags also makes agricultural soil sterile/barren as it stops the gaseous exchange. In normal agricultural land, the concentration of oxygen is 3 ppm. Where polythene is present, the concentration of oxygen in soil decreases to 0.001 ppm. In addition, the polythene pollution can adversely affect agricultural lands, waterways, and oceans.
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Satsangi, Aparna. "Plastic Pollution and Its Remedies." In Handbook of Research on Environmental and Human Health Impacts of Plastic Pollution, 142–59. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-5225-9452-9.ch008.
Повний текст джерелаАнотація:
Anthropogenic activities are causing slow extinction of fauna, flora, and fungi in natural environment through toxic pollution. It is probably due to industrial and technological advancement in recent decades. This pollution may be of air, water, soil, radioactivity, or plastics. Of these, the most widely spread form is pollution by plastics. It is drastically dangerous and harmful for marine life, but it also affects human health. Since plastic is non-biodegradable, one can hardly get rid of it. The harmful chemicals get absorbed in the plastic debris, have a varied and harmful range of chronic effects like endocrine disorders. Therefore, it is high time for the government to take stringent steps to overcome the problems associated with plastic pollution. Policy makers and advisers should sternly follow the steps: never throw plastic bags on roads; always carry bags from home; and, use paper decorative items rather than of plastics as paper can be reused.
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Adeniran, Ayo, Lorato Motsatsi, Sijekula Mbanga, Emma Ayesu-Koranteng, and Winston Shakantu. "An Investigation of Waste Management Practice in a South African Township: A Case Study of Ekuphumleni Township, Ndlambe Municipality." In Emerging Issues in Environmental Epidemiology and Its Reflection [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.107271.
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Solid waste is a global challenge that is more pronounced in developing countries such as South Africa, where its management is a major concern. The government has recently made a concerted effort to engage the public in sustainable waste management practices to resolve the crisis occasioned by the challenge. This chapter investigates waste management practices in the South African Township of Ekuphumleni and relied on a sample of 353 households to obtain some primary data with a questionnaire on the subject matter. The data collected was analyzed using “R,” and the results were presented using charts, tables, and figures. Data collected revealed that waste paper, cans, used plastics, and bottles were major waste components generated by the respondents and these wastes were generally stored unseparated domestically in plastic bags and home garbage can. Furthermore, the respondent indicated that the municipality does a door-to-door collection of their waste and they were unwilling to pay for waste collection services. While the waste management practice is in tandem with the municipal system, the study recommends that the respondents must be educated on circularity, which will ensure reducing, reusing, recycling, and recovering waste and further aid economic empowerment.
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Malik, Javid A., and Monika Bhadauria. "Polyhydroxyalkanoates." In Handbook of Research on Environmental and Human Health Impacts of Plastic Pollution, 370–87. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-5225-9452-9.ch018.
Повний текст джерелаАнотація:
Human dependence on number of chemicals or chemical derivatives has increased alarmingly. Among the commodity chemicals, plastics are becoming independent for our modern lifestyle, as the usage of plastics is increasing worryingly. However, these synthetic plastics are extremely persistent in nature and accumulate in the environment, thereby leading to serious ecological problems. So, to build our economy sustainably, a need of replacement is necessary. Biomaterials in terms of bioplastics are an anticipated option, being synthesized and catabolized by different organisms with myriad biotechnological applications. Polyhydroxyalkanoates (PHAs) are among such biodegradable bioplastics, which are considered as an effective alternative for conventional plastics due to their similar mechanical properties of plastics. A range of microbes under different nutrient and environmental conditions produce PHAs significantly with the help of enzymes. PHA synthases encoded by phaC genes are the key enzymes that polymerize PHA monomers. Four major classes of PHA synthases can be distinguished based on their primary structures, as well as the number of subunits and substrate specificity. PHAs can also be produced from renewable feedstock under, unlike the petrochemically derived plastics that are produced by fractional distillation of depleting fossil fuels. Polyhydroxybutyrate (PHB) is the simplest yet best known polyester of PHAs, as the PHB derived bioplastics are heat tolerant, thus used to make heat tolerant and clear packaging film. They have several medical applications such as drug delivery, suture, scaffold and heart valves, tissue engineering, targeted drug delivery, and agricultural fields. Genetic modification (GM) may be necessary to achieve adequate yields. The selections of suitable bacterial strains, inexpensive carbon sources, efficient fermentation, and recovery processes are also some aspects important aspects taken into consideration for the commercialization of PHA. PHA producers have been reported to reside at various ecological niches with few among them also produce some byproducts like extracellular polymeric substances, rhamnolipids and biohydrogen gas. So, the metabolic engineering thereafter promises to bring a feasible solution for the production of “green plastic” in order to preserve petroleum reserves and diminish the escalating human and animal health concerns environmental implications.
Тези доповідей конференцій з теми "Plastic bags Environmental aspects"
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Pleskanev, V. V., E. V. Yablonsky, D. S. Mishlakov, and P. K. Shalkevich. "PLASTIC WASTE UTILIZATION IN THE CONTEXT OF IMPROVING THE ENVIRONMENT." In SAKHAROV READINGS 2022: ENVIRONMENTAL PROBLEMS OF THE XXI CENTURY. International Sakharov Environmental Institute of Belarusian State University, 2022. http://dx.doi.org/10.46646/sakh-2022-2-332-335.
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The environmental aspects of plastic recycling are considered. The conditions under which it is possible to solve environmental problems associated with the processing and disposal of plastics are formulated.
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Shevtsova, E. V., P. K. Shalkevich, and L. A. Lipnitski. "THE IMPACT OF PLASTIC AND ITS ALTERNATIVES ON THE ENVIRONMENT." In SAKHAROV READINGS 2022: ENVIRONMENTAL PROBLEMS OF THE XXI CENTURY. International Sakharov Environmental Institute of Belarusian State University, 2022. http://dx.doi.org/10.46646/sakh-2022-2-335-338.
Повний текст джерелаАнотація:
The environmental aspects of using plastic in the context of introduction and use of its alternatives are considered. Modern trends in replacing plastic packaging with its organic alternatives are assessed. The conditions are formulated when the use of plastic container alternatives are environmentally friendly.
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Cournoyer, Michael E., Archie E. Nixon, Keith W. Fife, Arnold M. Sandoval, Vincent E. Garcia, and Robert L. Dodge. "Transuranic (TRU) Waste Volume Reduction Operation at a Plutonium Facility." In ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2010. http://dx.doi.org/10.1115/icem2010-40132.
Повний текст джерелаАнотація:
Programmatic operations at the Los Alamos National Laboratory Plutonium Facility (TA-55) involve working with various amounts of plutonium and other highly toxic, alpha-emitting materials. The spread of radiological contamination on surfaces, airborne contamination, and excursions of contaminants into the operator’s breathing zone are prevented through use of a variety of gloveboxes (the glovebox, coupled with an adequate negative pressure gradient, provides primary confinement). Size-reduction operations on glovebox equipment are a common activity when a process has been discontinued and the room is being modified to support a new customer. The Actinide Processing Group at TA-55 uses one-meter or longer glass columns to process plutonium. Disposal of used columns is a challenge, since they must be size-reduced to get them out of the glovebox. The task is a high-risk operation because the glass shards that are generated can puncture the bag-out bags, leather protectors, glovebox gloves, and the worker’s skin when completing the task. One of the Lessons Learned from these operations is that Laboratory management should critically evaluate each hazard and provide more effective measures to prevent personnel injury. A bag made of puncture-resistant material was one of these enhanced controls. We have investigated the effectiveness of these bags and have found that they safely and effectively permit glass objects to be reduced to small pieces with a plastic or rubber mallet; the waste can then be easily poured into a container for removal from the glovebox as non-compactable transuranic (TRU) waste. This size-reduction operation reduces solid TRU waste volume generation by almost 2-1/2 times. Replacing one-time-use bag-out bags with multiple-use glass crushing bags also contributes to reducing generated waste. In addition, significant costs from contamination, cleanup, and preparation of incident documentation are avoided. This effort contributes to the Los Alamos National Laboratory Continuous Improvement Program by improving the efficiency, cost-effectiveness, and formality of glovebox operations. In this report, the technical issues, associated with implementing this process improvement are addressed, the results discussed, effectiveness of Lessons Learned evaluated, and waste savings presented.
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Malathi, R. "Performance Study on Partial Replacement of Bitumen using Waste Polypropylene Cement Bags for Pavement Construction." In Sustainable Materials and Smart Practices. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644901953-47.
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Abstract. Flexible pavement is most commonly used in the bituminous material mix. It consists of different binders such as asphalt or bitumen and other minerals are added and compacted and used together in the lower layer of the pavement. Bituminous pavement surface property changes due to varying weather conditions. In hot climatic conditions, the bitumen becomes soft and during cold conditions it becomes too stiff and brittle in nature. In this study, the main concept is to reuse the waste materials and to promote cost-effective solution and reduce environmental pollution. In this project, waste cement bags (polypropylene) are used to replace a portion of bitumen which is used in road construction. Effect of addition of additive materials on the strength of the pavement was evaluated. Previous studies state that polypropylene emits 60ppm less pollution than bitumen while burning. The used cement waste bag when mixed with bitumen improves the behaviour and mechanical properties as per standard specification. In this experimental work, cement bags are shredded into smaller fragments and heated to 90ºC for 30 minutes in a heating mantle till the plastic pieces turned into powder form. On heating, 5 gm of powder was obtained from 20 gm of the used cement bags. This powder was added subsequently to bitumen in 5%, 7%, 9% & 11% for partial replacement of bitumen. Finally, it is inferred that the optimum percentagewas 8.2% without the addition of binders or oxidizing agents, for better efficiency.
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Willems, M., P. Luycx, R. Gilis, C. I. Renard, H. Reyniers, and J. M. Cuchet. "The HRA/SOLARIUM Project: Processing of Historical Waste." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4732.
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Starting in 2003, Belgoprocess will proceed with the treatment and conditioning of some 200 m3 of widely varying high- and medium-level waste from earlier research and development work, to meet standard acceptance criteria for later disposal. The gross volume of primary and secondary packages amounts to 2,600 m3. The waste has been kept in decay storage for up to 30 years. The project was started in 1997. Operation of the various processing facilities will take 7–8 years. The overall volume of conditioned waste will be of the order of 800 m3. All conditioned waste will be stored in appropriate storage facilities onsite. In November 2002, a new processing facility has been constructed, the functional tests of the equipment have been performed and the start-up phase has been started. Several cells of the Pamela vitrification facility onsite will be adapted for the treatment of high-level and highly α-contaminated waste; low-level β/γ waste will be treated in the existing facility for super compaction and conditioning by embedding into cement (CILVA). The bulk of these waste, of which 95% are solids, the remainder consisting of mainly solidified liquids, have been produced between 1967 and 1988. They originate from various research programmes and reactor operation at the Belgian nuclear energy research centre SCK-CEN, isotope production, decontamination and dismantling operations. The waste is stored in 4800 primary packages, of which 700 contain 120 g (5.1012 Bq) radium. Half the radium inventory is present in 25 containers. The presence of radium in waste packages, resulting in the emission of radon gas, requires particular measurements. The total activity at the moment of production amounted to 18,811 TBq β/γ and 34.4 TBq α, with individual packages emitting up to 555 TBq β/γ and 2.2 TBq α. According to calculations, the β/γ activity has decreased to some 2,000 TBq, with individual packages up to 112 TBq. The extreme diversity of the waste is not only expressed in their radiological characteristics, but also in their chemical composition, physical state, the nature and condition of the packages. Radioactivity ranges between 0.01 mCi to 1,000 Ci per package. Some packages contain resins, Na, NaK and Al containing waste, poison rods, residues of fuel elements. Although most of the liquid waste are solidified, a small fraction — both aqueous and organic — still remains liquid. Primary packages may be plastic bags, metal boxes, wire gauze, La Cale`ne boxes; secondary packages may be steel drums and concrete containers. Solid waste may be sources, counters, nuclear fuel residues, filters, synthetic materials, metals, resins, granulates, rock, sludges, cables, glass, etc. Some 1000 primary packages are stored in a dry storage vault comprising 20 concrete cells, while 3800 primary packages are stored in some 2,000 concrete containers, on a concrete floor, surrounded by an earth bank to the height of the waste stacking and covered by a metal construction. At present, the annual production of similar waste amounts to 2 m3 divided over some 30 containers. Generally, the primary waste packages will be loaded in 80-1 drums (an average of 2 packages per drum), and compacted in a 150 ton hydraulic press. The pellets will be collected in 100 1 drums (an average of 3 pellets per drum). Low-level β/γ waste is transferred to the CILVA facility for further treatment, while the other 100-1 drums are filled up with sand and, in the case of radium-contaminated waste, tight-welded. Subsequently, the 100-1 drums are loaded into 400-1 drums and embedded into cement. Certain packages, for example solidified radium-contaminated liquids in welded metal containers, are conditioned as such in overpacks. Specific procedures will be established for the various non-standard waste, such as sources, control and poison rods, resins and filters, fuel residues. Highly active and/or heavily α-contaminated waste are transferred to the existing Pamela facility for treatment and conditioning. Ideally, gamma spectrometry measurements are carried out on the primary packages, but due to the extreme diversity of these packages, ranging from plastic bags containing cardboard to highly active steel valves, preference was given to measurements on the conditioned waste, or at least on already pre-compacted waste in the case of treatment in the 2,000 ton press of the CILVA facility. Thus tremendous problems of calibration can be largely avoided. All operations are remotely controlled. Transfers between buildings are carried out within appropriately shielded containers and secondary waste will be treated in existing facilities onsite. The new processing facility is being built partly over the dry storage vaults, in the immediate vicinity of the already covered storage area.
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Willems, M., L. Krieckemans, P. Luycx, and A. Meeus. "The HRA/Solarium Project: Processing of Widely Varying High- and Medium-Level Waste." In ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1209.
Повний текст джерелаАнотація:
Abstract Starting in 2002, Belgoprocess will proceed with the treatment and conditioning of some 200 m3 of widely varying high- and medium-level wastes from earlier research and development work, to meet standard acceptance criteria for later disposal. The gross volume of primary and secondary packages amounts to 2,600 m3. The wastes have been kept in decay storage for up to 30 years. The project was started in 1998. Operation of the various processing facilities will take 7–8 years. The overall volume of conditioned waste will be of the order of 800 m3. All conditioned waste will be stored in appropriate storage facilities onsite. At present (August, 2000), the construction of a new processing facility is in progress and the call for venders for the equipment has been sent out. Several cells of the Pamela vitrification facility onsite will be adapted for the treatment of high-level and highly α-contaminated wastes; low-level β/γ wastes will be treated in the existing facility for supercompaction and conditioning by embedding into cement (CILVA). The bulk of these wastes, of which 95% are solids, the remainder consisting of mainly solidified liquids, have been produced between 1967 and 1988. They originate from various research programmes and reactor operation at the Belgian nuclear energy research centre SCK•CEN, isotope production, decontamination and dismantling operations. The wastes are stored in 4800 primary packages, of which 700 contain 120 g (5.1012 Bq) radium. Half the radium inventory is present in 25 containers. The presence of radium in waste packages, resulting in the emission of radon gas, requires particular measurements and the welding of packages for storage, in order to allow a correct interpretation of alpha measurements onsite. The total activity at the moment of production amounted to 18,811 TBq β/γ and 34.4 TBq α, with individual packages emitting up to 555 TBq β/γ and 2.2 TBq α. According to calculations, the β/γ activity has decreased to some 2,000 TBq, with individual packages up to 112 TBq. The extreme diversity of the wastes is not only expressed in their radiological characteristics, but also in their chemical composition, physical state, the nature and condition of the packages. Radioactivity ranges between 0.01 mCi to 1,000 Ci per package. Some packages contain resins, Na, NaK and Al containing wastes, poison rods, residues of fuel elements. Although most of the liquid wastes are solidified, a small fraction — both aqueous and organic — still remains liquid. Primary packages may be plastic bags, metal boxes, wire gauze, La Calène boxes; secondary packages may be steel drums and concrete containers. Solid wastes may be sources, counters, control and poison rods, nuclear fuel residues, filters, synthetic materials, metals, resins, granulates, rock, sludges, cables, glass … Some 1000 primary packages are stored in a dry storage vault comprising 20 concrete cells, while 3800 primary packages are stored in some 2,000 concrete containers, on a concrete floor, surrounded by an earth bank to the height of the waste stacking and covered by a metal construction. At present, the annual production of similar wastes amounts to 2 m3 divided over some 30 containers. Generally, the primary waste packages will be loaded in 80 l drums (an average of 2 packages per drum), and compacted in a 150 t hydraulic press. The pellets will be collected in 100 l drums (an average of 3 pellets per drum). Low-level β/γ waste is transferred to the CILVA facility for further treatment, while the other 100 l drums are filled up with sand and, in the case of radium-contaminated wastes, tight-welded. Subsequently, the 100 l drums are loaded into 400 l drums and embedded into cement. Certain packages, for example solidified radium-contaminated liquids in welded metal containers, are conditioned as such in overpacks. Specific procedures will be established for the various non-standard wastes, such as sources, control and poison rods, resins and filters, fuel residues. The new processing facility is being built partly over the dry storage vaults, in the immediate vicinity of the already covered storage area. It comprises 1) feeder locks for the introduction of the various waste packages; 2) a dispatching cell in which the primary packages are loaded into 80 l drums; 3) the processing cell in which the 80 l drums are compacted and the pellets loaded into 100 l drums; and either sent to the CILVA facility (low-level β/γ wastes), or the Pamela facility (highly active and/or heavily α-contaminated), or further treated in 4) the transport area, in which radium and medium-level waste containing drums are conditioned into cement; 5) the measurement and characterisation cell, in which the conditioned waste is characterized by gamma spectrometry, and checked for compliance with maximum allowed surface contamination and dose rate in view of interim storage in the appropriate facilities onsite. Ideally, gamma spectrometry measurements are carried out on the primary packages, but due to the extreme diversity of these packages, ranging from plastic bags containing cardboard to highly active steel valves, preference was given to measurements on the conditioned wastes, or at least on already pre-compacted wastes in the case of treatment in the 2,000 t press of the CILVA facility. Thus tremendous problems of calibration can be largely avoided. All operations are remotely controlled. Transfers between buildings are carried out within appropriately shielded containers and secondary wastes will be treated in existing facilities onsite.
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Usachev, Ivan, and Dmitry Solomin. "GLOBAL TRENDS IN BIODEGRADABLE POLYMERS." In GEOLINKS Conference Proceedings. Saima Consult Ltd, 2021. http://dx.doi.org/10.32008/geolinks2021/b2/v3/35.
Повний текст джерелаАнотація:
Recently, the rapid and almost uncontrollable growth in the consumption of synthetic plastics in many sectors of the economy, especially in the field of packaging, has been a serious concern. Plastic containers are used for packaging food products, medicines, electronic devices, liquids, including those with a higher hazard class, etc. [1]. According to the German Nova-Institute, the global plastic production in 2020 has reached almost 400 Mill. Tons. At the same time, the volume of biodegradable plastics obtained from renewable resources amounted to only 3.5 million tons, i.e., about 1% of the total volume production [2]. Considering that only 25% of plastic waste is recycled, the growing consumption of polymer products is forcing manufacturers to develop biodegradable polymer compositions [3]. The problem has economic and environmental aspects since it is interconnected with the growing need to protect the environment and reduce the cost of raw materials for the production of various products.
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El-Dehaibi, Nasreddine, and Erin F. MacDonald. "Extracting Customer Perceptions of Product Sustainability From Online Reviews." In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-98233.
Повний текст джерелаАнотація:
Abstract In order for a sustainable product to be successful in the market, designers must create products that are not only sustainable in reality, but are also sustainable as perceived by the customer — and reality vs. perception of sustainability can be quite different. This paper details a design method to identify perceived sustainable features (PerSFs) by collecting online reviews, manually annotating them using crowd-sourced work, and processing the annotated review fragments with a Natural Language machine learning algorithm. We analyze all three pillars of sustainability — social, environmental, and economic — for positive and negative perceptions of product features of a French press coffee carafe. For social aspects, the results show that positive PerSFs are associated with intangible features, such as giving the product as a gift, while negative PerSFs are associated with tangible features perceived as unsafe, like sharp corners. For environmental aspects, positive PerSFs are associated with reliable materials like metal while negative PerSFs are associated with the use of plastic. For economic aspects, PerSFs mainly serve as a price constraint for designers to satisfy other customer perceptions. We also show that some crucial sustainability concerns related to environmental aspects, like energy and water consumption, did not have a significant impact on customer sentiment, thus demonstrating the anticipated gap in sustainability perceptions and the realities of sustainable design, as noted in previous literature. From these results, online reviews can enable designers to extract PerSFs for further design study and to create products that resonate with customers’ sustainable values.
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Lortz, Wolfgang, and Radu Pavel. "Fundamentals in Metal Plasticity: From the Initial Contact to Non-Stationary, Dynamic Chip." In ASME 2020 15th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/msec2020-8369.
Повний текст джерелаАнотація:
Abstract The process mechanics phenomena play an important role in all metal cutting processes. Conditions are changing progressively not only to high velocities and deformation, but also to the interfacial friction between two different materials — tool and workpiece, and inside the same material, as a result of material flow with high temperatures. It will be shown, that during the ploughing effect in the interface between tool and chips there are two different kinds of friction, external and internal friction. All the existent models ignore this reality. Therefore, an alternative must be found to model the real phenomena during metal plastic flow in a more appropriate manner. In this study, we will consider the cutting process in fundamental terms based only on mathematics and physics. In connection with this fundamental development a question arises, “Which parameters are the best for characterizing the cutting process and can the equations be proven after processing, because nearly each parameter will disappear, such as stress, strain, friction or temperatures etc.”? It might be that only the plastic material deformation in connection with the external and internal friction can be identified and visualized after the cutting process for comparing the developed theoretical result with the experimental result of the chip formation region. That leads to the fact that, as long as agreement between theoretical and experimental result can be demonstrated, there is evidence that stress and strain, as well as friction and temperatures are correctly estimated. Therefore, this paper is focused on the plastic deformation ds in the plastic region during the cutting process. This plastic deformation will be expressed for the non-stationary, dynamic cutting process with non-uniform feed (toolworkpiece contact evolving from rubbing to material separation) and chip flow. This process behavior is relevant for the milling operation of metals as well as for carbon composites with glass fibers. For carbon composites with glass fibers, additional environmental and human safety aspects will arise, as described in this paper.
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González Madariaga, Francisco Javier, Luis A. Rosa Sierra, and Jaime F. Gómez Gómez. "Ecodesign assessment information an important tool for the design of new elements for building construction." In Systems & Design: Beyond Processes and Thinking. Valencia: Universitat Politècnica València, 2016. http://dx.doi.org/10.4995/ifdp.2016.3368.
Повний текст джерелаАнотація:
This paper reports some aspects about a new wallboard panel for building construction, a few facts from the materials research involved in the wallboard production and the design process carried on are reported too. The research done on the new panel eventually became in a whole new building construction system but more specific technical information about the system and the panel´s technical profile can be found in other publications, here has been privileged the discussion about the environmental impact produced by the new system´s in a whole. The flat panel is produced mainly with a nucleus of gypsum and water plaster, during its process that mixture has been enriched with agave dry fibers and polystyrene expanded plastic particles those materials cooperate to produce a light and resistant flat building construction product, both materials, dry fibers and plastic are materials recovered from the urban waste flow, this is a environmental benefit by itself. Wallboards samples were produced according several formulas and under different conditions, after they all were tested in labs. The project named “Design a building construction system based on an innovative flat panel produced with gypsum plaster, expanded plastic particles and agave dry fibers as reinforcement” is a six stages research project: a) Background, b) Preliminary lab works, c) Experimental stage 1, d). Experimental stage 2, e) Design and product development, and, f). Eco design assessment. Today all of project stages show a great advance, and the research team works on a detailed design for a new building construction system. As can be noticed in the project’s framework, one of the main objectives for the system is to reach a less ecological impact than other similar products. In order to verify that those goals have been reached, an Ecodesign assessment was carried on by the research team. In this paper the assessment procedure and some data output are brought to discussion.DOI: http://dx.doi.org/10.4995/IFDP.2016.3368