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Thematische Bibliographien / Arsenic wastes Environmental aspects / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „Arsenic wastes Environmental aspects“

Autor: Grafiati

Veröffentlicht am 4. Juni 2021

Zuletzt aktualisiert am 31. Januar 2023

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1

Jones, C. J., D. Laky, I. Galambos, C. Avendano und V. L. Colvin. „Life cycle analysis of two Hungarian drinking water arsenic removal technologies“. Water Supply 14, Nr. 1 (12.09.2013): 48–60. http://dx.doi.org/10.2166/ws.2013.165.

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Determining a technology's merit as a solution to Hungarian drinking water arsenic contamination goes beyond technical concerns: environmental and economic aspects also play very important roles. In an effort to address the current arsenic drinking water requirements in Hungary, life cycle analysis (LCA) methodology was applied on two example arsenic removal technologies, coagulation-filtration and adsorption, from cradle to grave. A distribution of 500 m3/day was assumed, along with a range of possible operation boundary conditions modelled solely for As treatment. Nine out of 10 considered impact categories tended to favour coagulation-filtration, however realistic variations in water chemistry and product characteristics led to some overlap of their environmental impact. Unlike other studies on water systems, electricity did not have a large direct impact; this was due to the focussed nature of this study on individual treatment technologies rather than an entire water supply system. Regeneration of the adsorption technology filter material was also observed to require nearly the same mass of materials for one regeneration as what was needed to support the coagulation-filtration technology for an entire year. Hazardous waste was surprisingly not reduced for adsorption compared to coagulation-filtration due to prefiltration requirements and an extra regeneration, even though adsorption shifts some of the environmental burden to the production phase. Additionally, cost analysis observes that coagulation-filtration is the cheaper of the two technologies; its highest cost is that of waste disposal, while the highest single expense modelled is that of the adsorption media cost.

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V., Anantha Rama, Prakash P. und Kiran Kumar B.V. „Impact of Hazardous Industrial Waste on Health and Environment“. Mapana - Journal of Sciences 5, Nr. 1 (25.07.2006): 38–46. http://dx.doi.org/10.12723/mjs.8.5.

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From the days of primitive society, human and animals have used the resource of the earth to support life and to dispose waste. Rapid population growth and uncontrolled industrial development are seriously degrading the urban and semi-urban environment in many of the developing countries placing enormous strain on natural resources and undermining efficient and sustainable development. Industrial operations lead to considerable generation of hazardous waste and in rapidly industrializing countries such as India the contribution to hazardous waste from industries are largest. Hazardous waste genarations from industries is also critical due to their large geophysical spread in the country, leading to regionwide impacts. Due to liberalization policy the pace of industrialization has been accelerated, which has resulted in increasing amount of hazardous waste every year. This long with a growing amount of municipal solid waste due to rapid urbanization and inadequate policy and technological measures continues to remain a daunting issue of environmental concern to India. In this scenario the present paper discusses various aspects of hazardous industrial waste like its origin, distribution and environmental and health hazards. Hazardous waste from industrial sectors contains heavy metals, pesticides, radioactive materials and other chemicals, which are toxic, flammable, reactive, corrosive, or have explosive properties. Normally Arsenic, Cadmium, Chromium, Copper, Lead, Zinc, Boron etc are found in pulverized fly ash. Cement industries emit huge quality of fluoride into the environment. Large quantity of mercury emitted from caustic soda industries using mercury electrodes, from chemical industries, paper and pulp industries etc. Tin mines emit tin in the vicinity of the mines. The metals such as Cadmium, Lead, Chromium, Arsenic etc, if present in the body, are hazardous to the health. Presence of fluoride within the range of 0.5 to 1.5 ppm is very essential in water for health, if present in excess leads to Florosis. Fouride may cause harm not only through water but also through air by way of respiration and soil. In river estuaries, the concentration of metal traces will reach to a high degrees of contamination because of stagnant water, when industrial effluents are fed into rivers and streams. This paper throws light upon many more such factors and also suggest measures to control and manage hazardous waste.

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Peters, Gregory R., Ross F. McCurdy und J. Thomas Hindmarsh. „Environmental Aspects of Arsenic Toxicity“. Critical Reviews in Clinical Laboratory Sciences 33, Nr. 6 (Januar 1996): 457–93. http://dx.doi.org/10.3109/10408369609080055.

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4

Zajáros, Anett, Klára Szita, Károly Matolcsy und Dániel Horváth. „Life Cycle Sustainability Assessment of DMSO Solvent Recovery from Hazardous Waste Water“. Periodica Polytechnica Chemical Engineering 62, Nr. 3 (13.11.2017): 305–9. http://dx.doi.org/10.3311/ppch.11097.

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The protection of continuous drinking water supply is really important all over the world, also in Hungary. Many kinds of hazardous chemicals could pollute the natural water resources, arsenic is one of the most occurring pollutant in Hungary. Recently, an ethylene-vinyl alcohol copolymer based arsenic removal adsorbent has been developed. During the manufacturing process hazardous waste water is produced, which is burned in the incineration plant, so this open production process needs fresh solvent every time. However, if the different fraction of the waste water is separated by distillation both the volume of the hazardous waste water can be reduced extremely and the recovered solvent and water can be reused in the manufacturing process. Beside analytical measurements Life Cycle Sustainability Assessment (LCSA) was prepared to identify and compare the environmental, economic and social effects of the current technology and the new one. The results proved that the technology closed by distillation is better than the current open one in each aspect of LCSA.

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Webster, Tara M., Raghav R. Reddy, James Y. Tan, Joy D. Van Nostrand, Jizhong Zhou, Kim F. Hayes und Lutgarde Raskin. „Anaerobic Disposal of Arsenic-Bearing Wastes Results in Low Microbially Mediated Arsenic Volatilization“. Environmental Science & Technology 50, Nr. 20 (07.10.2016): 10951–59. http://dx.doi.org/10.1021/acs.est.6b02286.

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6

Leist, M., R. J. Casey und D. Caridi. „The management of arsenic wastes: problems and prospects“. Journal of Hazardous Materials 76, Nr. 1 (August 2000): 125–38. http://dx.doi.org/10.1016/s0304-3894(00)00188-6.

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7

Mainier, F. B., L. P. C. Monteiro und R. J. Mainier. „Socio-environmental Impacts Associated with Burning Alternative Fuels in Clinker Kilns“. Engineering, Technology & Applied Science Research 3, Nr. 4 (11.08.2013): 479–82. http://dx.doi.org/10.48084/etasr.359.

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The pollutants found in emissions from cement plants depend on the processes used and the operation of the clinker kilns. Another crucial aspect concerns the characteristics of raw materials and fuels. The intensive use of fuels in rotary kilns of cement plants and the increasing fuel diversification, including fuels derived from coal and oil, from a multitude of industrial waste and from biomass, charcoal and agricultural waste (sugarcane bagasse, rice husk), is increasing the possibilities of combinations or mixtures of different fuels, known as blends. Thus, there are socio-environmental impacts associated with the burning of alternative fuels in clinker kilns. In view of the growing trend of entrepreneurs who want to target the waste produced in their unit and of the owners of the cement plants who want to reduce their production costs by burning a waste with lower cost than conventional fuels, it is necessary to warn that a minimum level of environmental care should be followed regarding these decisions. It is necessary to monitor the points of emission from cement kilns and in the wider area influenced by the plant, in order to improve environmental quality. Laboratory studies of burning vulcanised rubber contaminated with arsenic simulate the burning of used tires in cement clinker kilns producing SO2 and As2O3.

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8

Hindmarsh, J. Thomas, Ross F. McCurdy und John Savory. „Clinical and Environmental Aspects of Arsenic Toxicity“. CRC Critical Reviews in Clinical Laboratory Sciences 23, Nr. 4 (Januar 1986): 315–47. http://dx.doi.org/10.3109/10408368609167122.

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9

Clapp, C. Edward, Michael H. B. Hayes und Claudio Ciavatta. „Organic wastes in soils: Biogeochemical and environmental aspects“. Soil Biology and Biochemistry 39, Nr. 6 (Juni 2007): 1239–43. http://dx.doi.org/10.1016/j.soilbio.2006.12.001.

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10

Rosli, Ruhan A., Zakuan A. S. Harumain, Muhammad F. Zulkalam, Azzmer A. A. Hamid, Mohd F. Sharif, Mohd A. N. Mohamad, Abdul L. Noh und Rozilawati Shahari. „Phytoremediation of Arsenic in Mine Wastes by Acacia mangium“. Remediation Journal 31, Nr. 3 (07.06.2021): 49–59. http://dx.doi.org/10.1002/rem.21688.

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11

Wu, Fenghui, Chenyang Zhao, Guangfei Qu, Zhoupeng Yan, Yingda Zeng, Bangjin Chen, Yinghui Hu, Wei Ji, Yingli Li und Huimin Tang. „Adsorption of arsenic from aqueous solution using a zero-valent iron material modified by the ionic liquid [Hmim]SbF6“. RSC Advances 11, Nr. 12 (2021): 6577–85. http://dx.doi.org/10.1039/d0ra09339d.

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12

Roussel, Christophe, Hubert Bril und Angel Fernandez. „Arsenic Speciation: Involvement in Evaluation of Environmental Impact Caused by Mine Wastes“. Journal of Environmental Quality 29, Nr. 1 (Januar 2000): 182–88. http://dx.doi.org/10.2134/jeq2000.00472425002900010023x.

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13

Diacomanolis, Violet, Barry N. Noller, Raijeli Taga, Hugh H. Harris, Jade B. Aitken und Jack C. Ng. „Relationship of arsenic speciation and bioavailability in mine wastes for human health risk assessment“. Environmental Chemistry 13, Nr. 4 (2016): 641. http://dx.doi.org/10.1071/en14152.

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Environmental context X-ray absorption near-edge spectroscopy (XANES) was applied to give arsenic chemical forms directly in the solid phase of mine wastes from two mine sites, including fluvial dispersion. The arsenic speciation data explained the variation of in vitro bioaccessibility and in vivo bioavailability (rat uptake) data of the mine wastes. The As speciation from XANES fitting supported the hypothesis that when soil intake is adjusted for bioaccessibility, the potential health risk estimate to local residents is significantly lower. Abstract X-ray absorption near-edge spectroscopy (XANES) was used for arsenic speciation in mine processing and waste samples from two mines in northern Australia. XANES fitting of model compound spectra to samples was used, in combination with in vitro bioaccessibility data for the pure compounds, to predict bioaccessibility of each mine waste sample (Pearson’s correlation R2=0.756, n=51). The XANES fitting data for a smaller set of the samples (n=12) were compared with in vivo bioavailability and in vitro bioaccessibility data. The bioavailability of arsenic (As) in the mine wastes, which is dependent, at least in part, on its oxidation state, was found to be <14% (0.9–13.5%) for arsenite (AsIII) and <17% (3.5–16.4) for arsenate (AsV). Arsenic bioaccessibility in the mine wastes ranged from 8–36% in the stomach to 1–16% in the intestinal phase, indicating that a small portion of the total As concentration in the mine waste was available for absorption. A significant correlation showed that bioaccessibility can be used as a predictor of bioavailability. The XANES results support that bioavailability and bioaccessibility results were very similar and show a strong association with the presence of ferric arsenate and As sulfides. It can be concluded that, when soil intake is adjusted for bioaccessibility, the potential health risk estimate to local residents exposed to the mine waste was significantly lower than that estimated based on a 100% bioavailability often employed for the risk assessment.

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Clancy, Tara M., Kim F. Hayes und Lutgarde Raskin. „Arsenic Waste Management: A Critical Review of Testing and Disposal of Arsenic-Bearing Solid Wastes Generated during Arsenic Removal from Drinking Water“. Environmental Science & Technology 47, Nr. 19 (17.09.2013): 10799–812. http://dx.doi.org/10.1021/es401749b.

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15

Kotrikla, Anna. „Environmental management aspects for TBT antifouling wastes from the shipyards“. Journal of Environmental Management 90 (Februar 2009): S77—S85. http://dx.doi.org/10.1016/j.jenvman.2008.07.017.

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16

Park, Y. J., J. K. Yang und S. I. Choi. „Applicability of reused industrial dry sanding powder for adsorption of arsenic“. Water Science and Technology 58, Nr. 8 (01.10.2008): 1575–80. http://dx.doi.org/10.2166/wst.2008.541.

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This study examined the potential reuse of powdered wastes (PW) generated during the sanding and sawing process in a local chemical company in Korea with the viewpoint of the recycling these wastes and minimizing the level of contamination. As the aluminium hydroxide inside the PW could be thermally converted to various types of aluminium oxides depending on the calcination temperature, the adsorptive properties could be changed and it may affect on adsorption ability. Calcination of the PW was performed for 3 h at 550°C, 750°C, and 950°C. From the results, amorphous aluminium oxide was thermally generated by calcinating the PW at 550°C and with further increase of temperature to 950°C, the crystallinity of amorphous aluminium oxide was gradually increased. The physicochemical analysis of calcined powdered wastes (CPW) at various temperatures showed that more developed porosity was noted in the CPW as the calcinations temperature increased, whereas surface area was significantly decreased from 175.5 m2 g−1 to 46.5 m2 g−1. The removal efficiency of arsenate on the CPW decreased as the calcinations temperature increased from 550°C to 950°C. The CPW550 exhibited the highest adsorption capacities toward arsenate over pH range of 2–8 and showed a complete removal of the arsenate (10.0 mg L−1) within the first 10 min. Adsorption kinetic studies showed that the rate of arsenic adsorption on the CPW decreased with the increase of the calcination temperature. When the maximum adsorption capacity of arsenic onto the CPW was calculated by Langmuir equation, the CPW550 has the highest value as 43.9 mg g−1.

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17

Carrillo, A., und J. I. Drever. „Environmental assessment of the potential for arsenic leaching into groundwater from mine wastes in Baja Cali- fornia Sur, Mexico“. Geofísica Internacional 37, Nr. 1 (01.01.1998): 35–39. http://dx.doi.org/10.22201/igeof.00167169p.1998.37.1.2158.

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Arsenolite (As203)was historically produced as a byproduct of gold and silver extraction in southernmost Baja California Peninsula. There are in the San Antonio-El Triunfo area more than 800,000 tonnes of mine waste material with an average content of 4% arsenic oxide. The chemical reaction to produce arsenic trioxide (arsenolite) was the oxidation of arsenopyrite (AsFeS) with gold (ore) to produce iron oxides (Fe203) with gold and releasing SO2and As203 fumes. During the process the arsenic fumes sublimated onto the inner walls of old, mineral processing plants. When the chambers filled up, they were periodically emptied out on big piles of oxidized tailings. But once the plants were abandoned, the chambers remain half filled with approximately 600 tonnes of pure arsenolite. X-ray diffraction and scanning electron microscopy/energy dispersive X-ray spectrometry (EDS) indicate that the trace element content in the arsenolite and its banded structure may be due to the use of different ore for gold and silver extraction. A rough but conservative analysis of the potential leaching, based on results of the humidity cell test on mine waste material (arsenolite and arsenolite-bearing oxidized tailings) indicates that from 0.5 to 2.0 mg/l arsenic could be released into the groundwater system of the region. Real world data from the local aquifer show a close match with the calculations, indicating the close relation between arsenic content in tailings and groundwater.

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18

Somerville, H. J. „Physiological aspects of biotreatment of petrochemical wastes“. Conservation & Recycling 8, Nr. 1-2 (1985): 73–83. http://dx.doi.org/10.1016/0361-3658(85)90026-8.

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19

Hoagland, Beth, Luke Mosley, Tess Russo, Jason Kirby, Cecilia Cullen, Matthew S. Fantle, Mark Raven und Joshua Fisher. „Arsenic sequestration in gold mine wastes under changing pH and experimental rewetting cycles“. Applied Geochemistry 124 (Januar 2021): 104789. http://dx.doi.org/10.1016/j.apgeochem.2020.104789.

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20

Park, Youn-Jong, Jae-Kyu Yang und Sang-Il Choi. „The application of reused powdered wastes as adsorbent for treating arsenic containing mine drainage“. Journal of Environmental Science and Health, Part A 43, Nr. 9 (11.06.2008): 1093–99. http://dx.doi.org/10.1080/10934520802060134.

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21

Cui, Longpeng, Chris Newcombe, Dagmar S. Urgast, Andrea Raab, Eva M. Krupp und Jörg Feldmann. „Assessing the toxicity of arsenic-bearing sulfide minerals with the bio-indicator Corophium volutator“. Environmental Chemistry 8, Nr. 1 (2011): 52. http://dx.doi.org/10.1071/en10044.

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Environmental context Risk identification and characterisation of As-bearing sulfide minerals, the most important natural source of arsenic pollution, is significant in pollution control and risk management at mine sites. Bioassays constitute a cost-efficient approach to toxicity testing because they give an integrated picture of the biologically available fraction thereby allowing predictions of the potential combined effects of contaminants in testing mixtures. Abstract A sediment-based toxicity test was designed to investigate the biological response of the amphipod Corophium volutator exposed to three common arsenic minerals, namely realgar (AsS), orpiment (As2S3) and arsenopyrite (Fe[AsS]). The LD50 for the loaded minerals and the added As in the sediment showed mineral-dependent toxicities increasing in the order of AsS�?�As2S3�<�Fe[AsS] (224?1329�mg�As�kg?1). The exposed animals accumulated arsenic in a mineral-dependent manner similar to the observed toxicity, with AsS�?�As2S3 and both higher than that for Fe[AsS]. The arsenic concentration in C. volutator at the LD50 exposure exhibits the same mineral independences, confirming that the response is arsenic specific. A significant increase in extractable inorganic arsenic in the tissue (over 100-fold) at higher arsenic exposures (up to 3% mineral-loading, w/w) was revealed hence no significant biotransformation of inorganic arsenic. C. volutator is sensitive to arsenic and has the potential to be used as a bio-indicator to assess the toxicity of arsenic-containing sediments or arsenic-containing mining wastes.

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Mendes, J. M. O. „Legal Aspects of the Disposal of Industrial Wastes on Soil“. Water Science and Technology 19, Nr. 8 (01.08.1987): 87–97. http://dx.doi.org/10.2166/wst.1987.0047.

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It is, clearly, a Government responsibility to enact laws and promulgate regulations for control of industrial pollution. The main techniques for soil industrial wastes disposal, namely, landfarming and landfilling, profit from the extensive knowledge acquired, in past decades, in the field of water and air pollution control and must be analysed within a comprehensive system for hazardous waste management, with its legal and administrative aspects. This paper presents some general principles of a Hazardous Waste Management System, which are broadly applicable, regardless differences between States or Countries. Finally, it discusses the specific case of Hazardous Wastes Management in the State of Bahia, Brazil and makes some suggestions for its improvement.

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Tomaszewska-Krojańska, Dorota, und Jacek Pranagal. „Management of Carboniferous Rock and Waste Mineral Wool in the Context of Current Polish Legislation“. Mineralogia 48, Nr. 1-4 (01.12.2017): 63–69. http://dx.doi.org/10.1515/mipo-2017-0012.

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Abstract This paper presents the legal aspects of the management of wastes that can be used as sorbents in environmental protection. The legal status of wastes with mineral characteristics - Carboniferous rock and mineral wool from horticulture - is discussed, where it is found that the number of legal acts cause difficulties in the utilisation of such wastes.

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Ishchenko, Mykola, Alla Iarova, Victoria Adamovska, Kateryna Astafieva, Tetiana Holoborodko, Daria Lapshyna und Yevheniia Holovchenko. „Waste management in Ukraine: organizational aspects“. E3S Web of Conferences 280 (2021): 11004. http://dx.doi.org/10.1051/e3sconf/202128011004.

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Environmental management emerged as a consequence of an unprecedented strain on the Earth by humans. Each our activity leaves a trail, such as pollutions of air and soil, contamination of water, deforestation, and also tons of wastes. We are confronting environmental problems that are more taxing than ever before. Now we have everyday changes of the climate which is why there is an urgent need to find ways of life that is less damaging to the Earth. Waste management is a particular specialization of the environmental management which studies how to achieve a zero-waste life. The difference between the situation with waste in Ukraine compared to other developed countries is the large volume of waste generation and the lack of infrastructure for waste management. At the same time, the availability of such infrastructure is an essential feature of all economies of developed countries. Also, it is showed to increase of the amount of illegal and uncontrolled landfills and to degrade of the condition of existing dumps. This paper is aimed to explain how the Ukrainian government could educate people about problems of wastes and encourage us to change our habits.

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Luo, Qing Hai, Wen Wu Peng, Jun Zou und Xiu Fei Yang. „Management of Construction Wastes in Several Typical Projects“. Applied Mechanics and Materials 295-298 (Februar 2013): 1763–67. http://dx.doi.org/10.4028/www.scientific.net/amm.295-298.1763.

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Waste management of several typical construction projects was investigated in Hunan area; the project differences were analyzed on the waste amount and components, the increasing environmental impact of construction wastes was discussed. The disposal advices were given on the aspects of reducing, resources and eco-friendship of construction wastes. The environmental impact of construction wastes is permanent and accumulated, and the components are increasing diversified, so, the secondary contaminations are also increasing severe.

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Ciornei, Mirela, Răzvan Ionuț Iacobici, Ionel Dănuț Savu und Dalia Simion. „FDM 3D Printing Process - Risks and Environmental Aspects“. Key Engineering Materials 890 (23.06.2021): 152–56. http://dx.doi.org/10.4028/www.scientific.net/kem.890.152.

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The application of the 3D printing processes is continuously increasing due to their large number of technical and economic advantages when produce prototypes, but in the mass fabrication as well, especially for metal printing of low dimension products. The process produces pollution as all technological processes. Noise, fume and polymer wastes are the main elements which exit from the process and they are not products. The types and the volumes of those pollution emissions depend on the process parameters. The paper presents the results of FDM process emissions analysis. It was recorded the noise for different stages of the printer functioning. It was measured the volume and the contents of the fume produced during the extrusion of the polymer, for PLA polymer and for ABS polymer filaments. Specific risks were analysed and conclusions were reported. The measurement was done for a random chosen product and the results were compared with the pollutant emissions from traditional technological processes applied to erect the same type of product. It has been concluded that the noise emitted during the FDM printing is about 82-85% of the noise produced when apply milling to create similar shapes and dimensions (it was recorded values for the sound pressure in a large range: 42-68 dB, depending on the working regime). Regarding the fume emission, the intensity of emission was up to 40% higher in the FDM process comparing to the milling process. That was explained as being a direct result of the fluid-viscous state in which the material is put during the printing process. When discuss about the risks, most of the main identified risks in the milling and/or extrusion process were almost inexistent in the FDM printing. Electrical injuries and heat injuries are the main risks to which the operator is exposed. Mechanical injuries are sensitively lower than in the traditional processes, as milling The FDM process is safer and produces lower material wastes. It can be concluded that the FDM printing process has lower impact with the environment and with the operator.

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Mendoza-Castillo, D. I., C. K. Rojas-Mayorga, I. P. García-Martínez, M. A. Pérez-Cruz, V. Hernández-Montoya, A. Bonilla-Petriciolet und M. A. Montes-Morán. „Removal of heavy metals and arsenic from aqueous solution using textile wastes from denim industry“. International Journal of Environmental Science and Technology 12, Nr. 5 (09.04.2014): 1657–68. http://dx.doi.org/10.1007/s13762-014-0553-8.

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Tongesayi, Tsanangurayi, und Ronald B. Smart. „Arsenic Speciation: Reduction of Arsenic(V) to Arsenic(III) by Fulvic Acid“. Environmental Chemistry 3, Nr. 2 (2006): 137. http://dx.doi.org/10.1071/en05095.

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Environmental Context.Most technologies for arsenic removal from water are based on the oxidation of the more toxic and more mobile arsenic(iii) to the less toxic and less mobile arsenic(v). As a result, research effort has been focussed on the oxidation of arsenic(iii) to arsenic(v). It is equally important to explore environmental factors that enhance the reduction of arsenic(v) to arsenic(iii). An understanding of the redox cycling of arsenic could result in the development of cheaper and more efficient arsenic removal technologies, especially for impoverished communities severely threatened by arsenic contamination. Abstract.The objective of this study was to investigate the reduction of inorganic arsenic(v) with Suwannee River fulvic acid (FA) in aqueous solutions where pH, [FA], [As(v)], [As(iii)], and [Fe(iii)] were independently varied. Samples of inorganic As(v) were incubated with FA in both light and dark at constant temperature. Sterilisation techniques were employed to ensure abiotic conditions. Aliquots from the incubated samples were taken at various time intervals and analysed for As(iii) using square-wave cathodic-stripping voltammetry at a hanging mercury drop electrode. The study demonstrated the following important aspects of As speciation: (1) FA can significantly reduce As(v) to As(iii); (2) reduction of As(v) to As(iii) is a function of time; (3) both dark and light conditions promote reduction of As(v) to As(iii); (4) Fe(iii) speeds up the reduction reaction; and (5) oxidation of As(iii) to As(v) is promoted at pH 2 more than at pH 6.

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Casentini, Lazzazzara, Amalfitano, Salvatori, Guglietta, Passeri, Belardi und Trapasso. „Mining Rock Wastes for Water Treatment: Potential Reuse of Fe- and Mn-Rich Materials for Arsenic Removal“. Water 11, Nr. 9 (11.09.2019): 1897. http://dx.doi.org/10.3390/w11091897.

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The worldwide mining industry produces millions of tons of rock wastes, raising a considerable burden for managing both economic and environmental issues. The possible reuse of Fe/Mn-rich materials for arsenic removal in water filtration units, along with rock properties, was evaluated. By characterizing and testing 47 samples collected from the Joda West Iron and Manganese Mine in India, we found As removal up to 50.1% at 1 mg/L initial As concentration, with a corresponding adsorption capacity of 0.01–0.46 mgAs/g mining waste. The As removal potential was strictly related to spectral, mineralogical, and elemental composition of rock wastes. Unlike rock crystallinity due to quartz and muscovite, the presence of hematite, goethite, and kaolinite, in association with the amorphous fractions of Fe and Al, enhanced the As adsorption. The natural content of arsenic indicated itself the presence of active sorptive sites. The co-occurrence of site-specific competitors (i.e., phosphate) represented a consequent limitation, whereas the content of Ce, Cu, La, and Pb contributed positively to the As adsorption. Finally, we proposed a simplified multiple linear model as predictive tool to select promising rock wastes suitable for As removal by water filtration in similar mining environments: As predicted = 0.241 + 0.00929[As] + 0.000424[La] + 0.000139[Pb] − 0.00022[P].

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Drahota, Petr, Zuzana Grösslová und Helena Kindlová. „Selectivity assessment of an arsenic sequential extraction procedure for evaluating mobility in mine wastes“. Analytica Chimica Acta 839 (August 2014): 34–43. http://dx.doi.org/10.1016/j.aca.2014.06.022.

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Kim, C. S., C. Chi, S. R. Miller, R. A. Rosales, E. S. Sugihara, J. Akau, J. J. Rytuba und S. M. Webb. „(Micro)spectroscopic Analyses of Particle Size Dependence on Arsenic Distribution and Speciation in Mine Wastes“. Environmental Science & Technology 47, Nr. 15 (06.08.2013): 8164–71. http://dx.doi.org/10.1021/es4010653.

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Gao, Xubo, Yanxin Wang und Qinhong Hu. „Fractionation and speciation of arsenic in fresh and combusted coal wastes from Yangquan, northern China“. Environmental Geochemistry and Health 34, Nr. 1 (03.06.2011): 113–22. http://dx.doi.org/10.1007/s10653-011-9395-1.

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Alderwish, Ahmed M., und Fayad A. Alderwish. „Environmental Aspects of the Accelerated Urbanization in Sana’a, Yemen“. Sultan Qaboos University Journal for Science [SQUJS] 16 (01.12.2011): 1. http://dx.doi.org/10.24200/squjs.vol16iss0pp1-12.

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From an environmental viewpoint, the prevailing health problems must be a “first priority” in all major development projects. Public water supply provides only 36% of domestic water. Disinfection of public water supply from the south well field is essential to avoid health problems. About 60% of the drinking water sold by ‘hygienic’ stations is of questionable quality. Expansion and upgrading in hospitals, pharmacies and industries (waste producers) will have an immediate impact on the amount of hazardous waste that will have to be disposed of. To achieve a sustainable urban development and to avoid environment/resources degradation, care should be taken now to monitor and improve handling and management of hazardous waste. Initiating management programs for reducing or preventing the generation of waste during production processes or other operations would be the first step to an economically and environmentally sound way of dealing with hazardous wastes. As complete elimination cannot be realized, ways to recycle the wastes should be sought. Major air pollutants in Sana’a include dust and SPM, carbon monoxide, photochemical oxidants, hydrogen sulfide and ammonia, sulfur oxides and hydrocarbons. The main sources of pollution in the cities are the mobile sources. The emissions of gases from oil consumption are exceeding the permissible level and it is essential that the gases be monitored, at least in the congested areas of the cities. Integration of environmental concerns with economic growth in Yemen should occur at the planning stage, adopting a positive approach and focusing on improvement in the health and welfare of the residents of the program area. Mitigating measures relating to the protection of the urban environment and improving public health must be primary objectives of EIA investigation for any upgrading project within urban areas and any other projects impacting on an urban environment.

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Sampaio, J. A. B. „Hazardous Wastes Management in Brazil: The Need for a Regional Synoptic Approach“. Water Science and Technology 24, Nr. 12 (01.12.1991): 11–18. http://dx.doi.org/10.2166/wst.1991.0364.

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Hazardous wastes management in Brazil is a particularly difficult task to accomplish. The country's enormous area, the lack of tradition on dealing with this subject, few trained people, the high investment costs and the sophisticated technology involved make the regional management of hazardous wastes a mandatory approach to reduce costs and maximize benefits. In order to achieve this goal, a synoptic approach over an entire geographical region on all aspects of hazardous wastes management is proposed. On the other hand, several difficulties are foreseen, some of them in the socio-political arena, requiring a lot of an. environmental diplomacy and competent social communication in order to succeed. Despite the difficulties, there seem to be no options to deal with this problem when simultaneously considering its environmental, technical, and economic aspects.

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Edelmann, W., U. Baier und H. Engeli. „Environmental aspects of the anaerobic digestion of the organic fraction of municipal solid wastes and of solid agricultural wastes“. Water Science and Technology 52, Nr. 1-2 (01.07.2005): 203–8. http://dx.doi.org/10.2166/wst.2005.0518.

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In order to obtain more detailed information for better decision making in future biogenic waste treatment, different processes to treat biogenic wastes in plants with a treatment capacity of 10,000 tons of organic household wastes per year as well as agricultural codigestion plants were compared by life cycle assessments (LCA). With the tool EcoIndicator, anaerobic digestion is shown to be advantageous as compared to composting, incineration or a combination of digestion and composting, mainly because of a better energy balance. The management of the liquid manure in agricultural codigestion of organic solid wastes causes increased gaseous emissions, which have negative effects on the LCA, however. It is recommended to cover the slurry pit and to use an improved manure management in order to compensate for the additional gaseous emissions. In the LCAs, the quality of the digester output could only be taken into account to a small extent; the reasons are discussed.

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Rojas-Conejo, Johanna, Francisco Picado Pavón, Andrea Suárez Serrano, Cornelis A. M. Van Gestel, Christian Golcher Benavides und Guillermo Durán Sanabria. „Mining environmental liabilities: a potential source of metal contamination for freshwater ecosystems in Costa Rica“. Revista Geográfica de América Central 1, Nr. 68 (23.11.2021): 333–56. http://dx.doi.org/10.15359/rgac.68-1.12.

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Metal mining in Costa Rica, and use of toxic substances in this activity, has occasionally resulted in the negligent abandonment of waste structures containing significant amounts of toxic metals. These structures have been exposed to oxidation and weathering, resulting in the environmental release of metals, thus affecting the quality of the surrounding freshwater ecosystems. The objective of the investigation was to determine to what extent the abandoned mining liabilities in Líbano de Tilarán, Guanacaste, are a potential source of metal contamination for the waters, sediments and benthic macroinvertebrates of the San José and Cañas Rivers. The possible consequences for the environment associated with the presence of mining wastes were quantitatively and qualitatively assessed through the amounts of metals present in the wastes and leachate. Infiltration tests were carried out and a wet cell kinetic test allowed describing the processes and chemical reactions that are likely to occur in mining wastes during rain, associated with the loading of metals in leachate. The presence of pyrite (FeS2), which favors the acidification of the medium and the release of metals, was shown by X-ray diffraction tests on samples of the waste materials. The results show a high content of metals (37.8 tons of lead, 20.2 tons of arsenic and 0.4 tons of cadmium) from the total of ~106 000 tons in mining liabilities, the solubilization of these and other metals in an oxidizing acid medium (pH: 4.16, EC: 3620 µs / cm and ORP: 275 mV) during the dry-rainy season transition and an important load of metals (277 kg / month of zinc, 234 kg / month of magnesium, 165 kg / month of aluminum, 96.1 kg / month of iron, 2.68 kg / month of cadmium, 0.90 kg / month of arsenic and 0.22 kg / month of lead) in leachates arriving to the San José River in September. This investigation showed that the abandoned mining liabilities in Líbano are a potential source of metal contamination for the surrounding freshwater ecosystems.

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Nazir, Rashid, Jawad Ali, Ijaz Rasul, Emilie Widemann und Sarfraz Shafiq. „Eco-Environmental Aspects of COVID-19 Pandemic and Potential Control Strategies“. International Journal of Environmental Research and Public Health 18, Nr. 7 (27.03.2021): 3488. http://dx.doi.org/10.3390/ijerph18073488.

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A new coronavirus-strain from a zoonotic reservoir (probably bat)—termed as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)—has recently claimed more than two million deaths worldwide. Consequently, a burst of scientific reports on epidemiology, symptoms, and diagnosis came out. However, a comprehensive understanding of eco-environmental aspects that may contribute to coronavirus disease 2019 (COVID-19) spread is still missing, and we therefore aim to focus here on these aspects. In addition to human–human direct SARS-CoV-2 transmission, eco-environmental sources, such as air aerosols, different public use objects, hospital wastes, livestock/pet animals, municipal wastes, ventilation facilities, soil and groundwater potentially contribute to SARS-CoV-2 transmission. Further, high temperature and humidity were found to limit the spread of COVID-19. Although the COVID-19 pandemic led to decrease air and noise pollution during the period of lockdown, increased use of masks and gloves is threatening the environment by water and soil pollutions. COVID-19 badly impacted all the socio-economic groups in different capacities, where women, slum dwellers, and the people lacking social protections are the most vulnerable. Finally, sustainable strategies, waste management, biodiversity reclaim, eco-friendly lifestyle, improved health infrastructure and public awareness, were proposed to minimize the COVID-19 impact on our society and environment. These strategies will seemingly be equally effective against any future outbreak.

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Tait, J. C., P. J. Hayward und J. S. Devgun. „Technologies for the containment, immobilization, and disposal of radioactive wastes“. Canadian Journal of Civil Engineering 16, Nr. 4 (01.08.1989): 444–58. http://dx.doi.org/10.1139/l89-074.

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Atomic Energy of Canada Limited is developing methods for the management and safe disposal of radioactive wastes. These wastes range from the highly radioactive (high-level) UO2 fuel arising from the nuclear generation of electrical power to the low- and intermediate-level wastes arising from research in various Canadian institutions using radioactive isotopes. This paper reviews the current research programs on materials and processes for the immobilization and containment of UO2 fuel wastes and the technical aspects of programs demonstrating the various technologies needed for implementing a disposal program for low-level wastes. Key words: waste management, radioactive, nuclear fuel waste, high-level waste, low-level waste, disposal, immobilization, glass, containment, siting, land burial, geological disposal.

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Aleksandrova, Tatyana, und Stepan Korchevenkov. „ECOLOGICAL AND TECHNOLOGYCAL ASPECTS OF ASH AND SLAG WASTES UTILIZATION“. Journal of Ecological Engineering 18, Nr. 4 (01.07.2017): 15–24. http://dx.doi.org/10.12911/22998993/74363.

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Murciego, A., E. Álvarez-Ayuso, S. C. Aldana-Martínez, A. Sanz-Arranz, J. Medina-García, F. Rull-Pérez und P. Villar-Alonso. „Characterization of secondary products in arsenopyrite-bearing mine wastes: influence of cementation on arsenic attenuation“. Journal of Hazardous Materials 373 (Juli 2019): 425–36. http://dx.doi.org/10.1016/j.jhazmat.2019.03.086.

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SINGH, T., und K. PANT. „Solidification/stabilization of arsenic containing solid wastes using portland cement, fly ash and polymeric materials“. Journal of Hazardous Materials 131, Nr. 1-3 (17.04.2006): 29–36. http://dx.doi.org/10.1016/j.jhazmat.2005.06.046.

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Álvarez, M. L., G. Gascó, R. Rodíguez-Pacheco, J. Paz-Ferreiro und A. Méndez. „Recovery of Metals from Mine Wastes: The Effect of Biochar–Fe Composites in the Immobilization of Arsenic“. Journal of Sustainable Metallurgy 8, Nr. 1 (03.02.2022): 419–29. http://dx.doi.org/10.1007/s40831-022-00495-y.

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AbstractMine wastes are a major environmental problem of main mines activities. However, in recent years, related to the circular economy strategy, some of these wastes have been considered as secondary source of raw materials. Generally, metal’s content show low concentrations and their recovery made the development of cheap and sustainable technologies necessary. The main objective of the present research is to study the potential recovery of zinc from one mine waste (MW) originated in an old zinc/lead mine exploitation. Two biochar–Fe composites (BM–Fe and HM–Fe) were used as catalysts in the leaching of zinc and copper. Biochars were obtained by pyrolysis of pruning waste (BM–Fe) or hydrochar from pruning waste (HM–Fe), impregnated with 5 wt% ferric sulfate. The use of the two biochars did not improve the amount of zinc recovered, but was able to reduce, significantly, the arsenic leaching, promoting its immobilization in the final residue. Graphical Abstract

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Kiraly, Mr Uzor, und Mr Gabor Lakner. „Underground water area rehabilitation project in Hungary financed by the Hungarian government to save the environment of the river Sió's using membrane technology“. Water Practice and Technology 8, Nr. 1 (01.03.2013): 55–69. http://dx.doi.org/10.2166/wpt.2013.008.

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This article is a case study about a real environmental project in Hungary that is financed by the Hungarian Government. The main task of the project is to re-cultivate the area of an old leather factory in the town of Simontornya, including soil exchange and underground water rehabilitation. This article itself mainly gives detailed technological information about the underground water treatment process, but also basic information about the recultivation parts of the whole project. The basic question of the underground water treatment project was how to withdraw 168,000 m3 of highly polluted underground water, remove the very heavily polluted metals and salts (arsenic, boron, chrome, ammonia, nitrate, chloride) and infiltrate the treated water back into the ground, all over a period of 2 years. The solution implemented is an integrated membrane system (NF; RO) including conventional physical and chemical pre-treatment and softening, with a selective ion exchange process for post-treatment. One further key aspect of the technology applied was to minimise the waste created during the whole process.

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Silva, Veronica, Jorge Loredo, Rodolfo Fernández-Martínez, Raquel Larios, Almudena Ordóñez, Belén Gómez und Isabel Rucandio. „Arsenic partitioning among particle-size fractions of mine wastes and stream sediments from cinnabar mining districts“. Environmental Geochemistry and Health 36, Nr. 5 (13.04.2014): 831–43. http://dx.doi.org/10.1007/s10653-014-9602-y.

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Bencko, Vladimír, Jiří Rameš, Eleonora Fabiánová, Jiří Pešek und Marián Jakubis. „Ecological and human health risk aspects of burning arsenic-rich coal“. Environmental Geochemistry and Health 31, S1 (25.11.2008): 239–43. http://dx.doi.org/10.1007/s10653-008-9224-3.

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Nieva, N. E., L. Borgnino, F. Locati und M. G. García. „Mineralogical control on arsenic release during sediment–water interaction in abandoned mine wastes from the Argentina Puna“. Science of The Total Environment 550 (April 2016): 1141–51. http://dx.doi.org/10.1016/j.scitotenv.2016.01.147.

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Salzsauler, Kristin A., Nikolay V. Sidenko und Barbara L. Sherriff. „Arsenic mobility in alteration products of sulfide-rich, arsenopyrite-bearing mine wastes, Snow Lake, Manitoba, Canada“. Applied Geochemistry 20, Nr. 12 (Dezember 2005): 2303–14. http://dx.doi.org/10.1016/j.apgeochem.2005.06.007.

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Paktunc, D., und K. Bruggeman. „Solubility of nanocrystalline scorodite and amorphous ferric arsenate: Implications for stabilization of arsenic in mine wastes“. Applied Geochemistry 25, Nr. 5 (Mai 2010): 674–83. http://dx.doi.org/10.1016/j.apgeochem.2010.01.021.

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Pang, J., G. S. Y. Chan, J. Zhang, J. Liang und M. H. Wong. „Physiological aspects of vetiver grass for rehabilitation in abandoned metalliferous mine wastes“. Chemosphere 52, Nr. 9 (September 2003): 1559–70. http://dx.doi.org/10.1016/s0045-6535(03)00496-x.

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Meta Puspita, Nadya. „THE URGENCY OF ELECTRONIC WASTE MANAGEMENT REGULATION IN INTERNATIONAL AND REGIONAL (ASEAN) LAW WITH ENVIRONMENTAL PROTECTION APPROACH“. Padjadjaran Journal of International Law 3, Nr. 1 (31.01.2019): 84–104. http://dx.doi.org/10.23920/pjil.v3i1.309.

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AbstractThe development of technology has been increasing rapidly thus almost all aspects of humans are supported by technology and electronic equipment. More electronic wastes are produced, but those could not be managed similar to the conventional wastes and do not have the same characteristics as hazardous wastes as regulated in the Basel Convention 1989 so that the Convention cannot be applied to electronic wastes management optimally. In this present time, there are still no instruments in international law regarding the management of electronic wastes, but the international community has begun to discuss this issue and argue that it is necessary to develop regulations in international and regional levels, especially in the ASEAN region. The analysis and conclusions of this research shows that the Basel Convention cannot optimally accommodate the regulation of electronic wastes management and it is necessary to establish a regulation in the form of a mechanism under the Basel Convention 1989 with regard to environmental aspects. Arrangements at the ASEAN regional level should be made by referring to the principles regulated in the mechanism and formed in a coordinative and non-coercive guideline. Keywords: e-waste, e-waste management, environmental protection AbstrakTeknologi semakin berkembang hampir semua aspek kehidupan manusia telah didukung oleh teknologi dengan peralatan elektronik. Produksi sampah elektronik semakin banyak, namun mereka tidak dapat dikelola seperti sampah konvensional dan juga tidak sepenuhnya memiliki karakteristik yang sama seperti sampah B3 yang telah diatur dalam Konvensi Basel 1989 sehingga Konvensi tidak dapat diterapkan pada pengelolaan sampah elektronik secara optimal. Saat ini, belum ada instrumen dalam hukum internasional mengenai pengelolaan sampah elektronik, namun masyarakat internasional sudah mulai membahas isu ini dan perlu adanya untuk mengembangkan peraturan di tingkat internasional dan regional, khususnya di ASEAN. Analisis dan kesimpulan penelitian ini memperlihatkan pengaturan dalam Konvensi Basel 1989 tidak dapat mengakomodasi secara optimal mengenai pemanfaatan sampah elektronik sehingga perlu dibuat suatu peraturan berupa mekanisme di bawah Konvensi Basel 1989 dengan memperhatikan aspek-aspek lingkungan. Pengaturan di tingkat regional ASEAN dapat dibuat dengan mengacu pada prinsip-prinsip yang diatur dalam mekanisme tersebut namun dibentuk berupa panduan yang lebih koordinatif dan tidak memaksa. Kata kunci: sampah elektronik, pengelolaan sampah elektronik, perlindungan lingkungan

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