Letteratura scientifica selezionata sul tema "Agricultural valorization"
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Articoli di riviste sul tema "Agricultural valorization"
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Nacua, Zhylannie, e Gina Lacang. "Valorization of Agricultural Wastes to Offset Greenhouse Gases (GHGs) Emissions: An Insight in Southeast Asia". Journal of Environmental & Earth Sciences 6, n. 2 (19 giugno 2024): 87–98. http://dx.doi.org/10.30564/jees.v6i2.6562.
Testo completoAbstract (sommario):
This paper aims to review and synthesize the existing literature on agricultural waste valorization in the Southeast Asian (SEA) region, with a focus on its potential to offset greenhouse gas (GHG) emissions. The SEA region generates abundant agricultural wastes from major commodity crops, such as: rice, palm oil, sugarcane, coconut, and corn, which present opportunities for valorization. The review found that countries like Indonesia, Malaysia, and Thailand have conducted several studies on agricultural waste valorization, exploring pathways such as bioenergy, value-added products, and soil amendments. However, only a few studies exist for some countries with high residue valorization potential, such as Vietnam and the Philippines. The reviewed literature showed a relationship between agricultural waste valorization and emissions that could contribute to air pollution, but no direct association was established with the associated GHG emissions. The abundance of agricultural residues across SEA presents opportunities for valorization to offset GHG emissions. However, effective valorization is hindered by challenges like open burning practices, logistical issues, and a lack of sustainable waste management strategies. This review highlights the need for further research to establish the direct relationship between agricultural waste valorization and GHG emissions reduction in the SEA region.
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Andreu-Rodriguez, Javier, Eva Medina, M. Teresa Ferrandez-Garcia, Manuel Ferrandez-Villena, Clara Eugenia Ferrandez-Garcia, Concepción Paredes, M. Angeles Bustamante e Joaquín Moreno-Caselles. "Agricultural and Industrial Valorization ofArundo donaxL." Communications in Soil Science and Plant Analysis 44, n. 1-4 (gennaio 2013): 598–609. http://dx.doi.org/10.1080/00103624.2013.745363.
Testo completo
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Gancone, Agita, Jelena Pubule e Dagnija Blumberga. "Valorization Methodology for Agriculture Sector Climate Change Mitigation Measures". Environmental and Climate Technologies 25, n. 1 (1 gennaio 2021): 944–54. http://dx.doi.org/10.2478/rtuect-2021-0071.
Testo completoAbstract (sommario):
Abstract Agriculture sector holds an essential role in Latvia’s economy and play significant role in keeping rural areas as a habitable environment (approximately 32 % of the population lives in rural areas). The agricultural sector is responsible for 28.5 % (2018) of total non-European Union Emissions Trading System (non – EU ETS) greenhouse gas (GHG) emissions in Latvia. The largest part of emissions is related to agricultural soils (59.3 %) and enteric fermentation 32.6 % (mainly dairy and beef cattle). The GHG emissions trend of recent years shows a gradual and steady increase in GHG emissions for example between 2005 and 2018 +12.5 % and during the period 2013–2018 emissions increased by 2.12 %. According to Latvia’s National Energy and Climate Plan 2021–2030 (NECP), total GHG emissions in the agricultural sector are expected to increase in the period from 2020 to 2030, mainly in the enteric fermentation and agricultural soil categories. To achieve determined targets for Latvia’s non-EU ETS sector in 2030 and be on track to reach climate neutrality in 2050, the agricultural sector has to contribute to GHG emission mitigation. For the agricultural sector, improved food security and climate smart activities will be necessary to achieve GHG emission reduction. Existing policies and measures (WEM) as well as those which are included in the NECP as additional measures (WAM) were used to assess more suitable measures to move on climate smart agriculture (CSA), that could help to decrease GHG emissions at the farm and state level as well as is expected to contribute towards achieving the commitments in the plan. To achieve the aim of the study, a combination of the Delphi method together with multi-criteria analysis (MCA) is utilized to find a set of top GHG mitigation measures in the future. Results show that, in the future, the measure support the development of innovative technologies and solutions to promote resource efficiency in agriculture is essential to move on climate smart agriculture.
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Puglia, Debora, Daniela Pezzolla, Giovanni Gigliotti, Luigi Torre, Maria Luce Bartucca e Daniele Del Buono. "The Opportunity of Valorizing Agricultural Waste, Through Its Conversion into Biostimulants, Biofertilizers, and Biopolymers". Sustainability 13, n. 5 (3 marzo 2021): 2710. http://dx.doi.org/10.3390/su13052710.
Testo completoAbstract (sommario):
The problems arising from the limited availability of natural resources and the impact of certain anthropogenic activities on the environment must be addressed as soon as possible. To meet this challenge, it is necessary, among other things, to reconsider and redesign agricultural systems to find more sustainable and environmentally friendly solutions, paying specific attention to waste from agriculture. Indeed, the transition to a more sustainable and circular economy should also involve the effective valorization of agricultural waste, which should be seen as an excellent opportunity to obtain valuable materials. For the reasons mentioned above, this review reports and discusses updated studies dealing with the valorization of agricultural waste, through its conversion into materials to be applied to crops and soil. In particular, this review highlights the opportunity to obtain plant biostimulants, biofertilizers, and biopolymers from agricultural waste. This approach can decrease the impact of waste on the environment, allow the replacement and reduction in the use of synthetic compounds in agriculture, and facilitate the transition to a sustainable circular economy.
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G, Ginni, Kavitha S, Yukesh Kannah R, Shashi Kant Bhatia, Adish Kumar S, Rajkumar M, Gopalakrishnan Kumar, Arivalagan Pugazhendhi, Nguyen Thuy Lan Chi e Rajesh Banu J. "Valorization of agricultural residues: Different biorefinery routes". Journal of Environmental Chemical Engineering 9, n. 4 (agosto 2021): 105435. http://dx.doi.org/10.1016/j.jece.2021.105435.
Testo completo
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Awogbemi, Omojola, e Daramy Vandi Von Kallon. "Valorization of agricultural wastes for biofuel applications". Heliyon 8, n. 10 (ottobre 2022): e11117. http://dx.doi.org/10.1016/j.heliyon.2022.e11117.
Testo completo
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Meisel, Kathleen, Andreas Clemens, Christoph Fühner, Marc Breulmann, Stefan Majer e Daniela Thrän. "Comparative Life Cycle Assessment of HTC Concepts Valorizing Sewage Sludge for Energetic and Agricultural Use". Energies 12, n. 5 (26 febbraio 2019): 786. http://dx.doi.org/10.3390/en12050786.
Testo completoAbstract (sommario):
In many countries, sewage sludge is directly used for energy and agricultural purposes after dewatering or digestion and dewatering. In recent years, there has been a growing interest in additional upstream hydrothermal carbonization (HTC), which could lead to higher yields in the energetic and agricultural use. Twelve energetic and agricultural valorization concepts of sewage sludge are defined and assessed for Germany to investigate whether the integration of HTC will have a positive effect on the greenhouse gas (GHG) emissions. The study shows that the higher expenses within the HTC process cannot be compensated by additional energy production and agricultural yields. However, the optimization of the HTC process chain through integrated sewage sludge digestion and process water recirculation leads to significant reductions in GHG emissions of the HTC concepts. Subsequently, nearly the same results can be achieved when compared to the direct energetic use of sewage sludge; in the agricultural valorization, the optimized HTC concept would be even the best concept if the direct use of sewage sludge will no longer be permitted in Germany from 2029/2032. Nevertheless, the agricultural valorization concepts are not generally advantageous when compared to the energetic valorization concepts, as it is shown for two concepts.
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COVACI, Brîndușa, Marian CONSTANTIN, Radu BREJEA e Mihai COVACI. "STATISTICAL ANALYSIS ON VALORIZATION THE ROMANIAN LIVESTOCK FROM THE MOUNTAIN REGIONS". Annals of the Academy of Romanian Scientists Series on Agriculture Silviculture and Veterinary Medicine 11, n. 2 (2022): 43–59. http://dx.doi.org/10.56082/annalsarsciagr.2022.2.43.
Testo completoAbstract (sommario):
The paper develops a descriptive analysis (ANOVA) and forecasting regarding cattle, sheep, goats and pigs in Romania. The data simulated in SPSS, taken from Eurostat, show that these numbers will continue to decrease considerably, both in the Bucharest-Ilfov region and in the Romanian mountain regions. The general situation of mountain agriculture shows similar trends to Romanian agriculture. At the national level, the arable surface has been reduced in stages in the last three decades, a decrease mainly due to the change of extensive agricultural methods (grazing, spontaneous flora) with intensive ones (stable, controlled flora). Following the national agricultural trend, mountain agriculture after 1990 changed its structure and dimensions (such as cattle, production and mountain producers, mountain entrepreneurship, etc.). Some aspects remained quantitatively unchanged, such as the large number of individual holdings and the high share of agricultural land use. In this context, public and private entities must act jointly for the valorization of mountain ecosystems by controlling the pollution caused by the numerous individual exploitations. The mountain ecosystems in the Romanian area influence the national agricultural productivity, valuing the mountain product at the highest levels. Whether it is alpine meadow ecosystems, including coniferous forests and interpenetration zones between high and mid-mountains, low-mountain ecosystems, or high- and mid-hill ecosystems, the ultimate goal of pollution reduction research and action must be the same, respectively protecting the mountain area.
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Blasi, Alessandro, Alessandra Verardi, Catia Giovanna Lopresto, Sarah Siciliano e Paola Sangiorgio. "Lignocellulosic Agricultural Waste Valorization to Obtain Valuable Products: An Overview". Recycling 8, n. 4 (20 luglio 2023): 61. http://dx.doi.org/10.3390/recycling8040061.
Testo completoAbstract (sommario):
The sustainable management of lignocellulosic agricultural waste has gained significant attention due to its potential for the production of valuable products. This paper provides an extensive overview of the valorization strategies employed to convert lignocellulosic agricultural waste into economically and environmentally valuable products. The manuscript examines the conversion routes employed for the production of valuable products from lignocellulosic agricultural waste. These include the production of biofuels, such as bioethanol and biodiesel, via biochemical and thermochemical processes. Additionally, the synthesis of platform chemicals, such as furfural, levulinic acid, and xylose, is explored, which serve as building blocks for the manufacturing of polymers, resins, and other high-value chemicals. Moreover, this overview highlights the potential of lignocellulosic agricultural waste in generating bio-based materials, including bio-based composites, bio-based plastics, and bio-based adsorbents. The utilization of lignocellulosic waste as feedstock for the production of enzymes, organic acids, and bioactive compounds is also discussed. The challenges and opportunities associated with lignocellulosic agricultural waste valorization are addressed, encompassing technological, economic, and environmental aspects. Overall, this paper provides a comprehensive overview of the valorization potential of lignocellulosic agricultural waste, highlighting its significance in transitioning towards a sustainable and circular bioeconomy. The insights presented here aim to inspire further research and development in the field of lignocellulosic waste valorization, fostering innovative approaches and promoting the utilization of this abundant resource for the production of valuable products.
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Ranaivoson S. L. O., Rakotomamonjy P., Razafindramanga A. W, Razafimahefa M.V, Razafindrakoto N.R.F., Letsara R., Andriatsilavo M.H., Koto-te-Nyiwa Ngbolua e Robijaona Rahelivololoniaina B. "Valorization of Agricultural Waste into Ecological Coal in the Region of Vakinankaratra". Britain International of Exact Sciences (BIoEx) Journal 5, n. 2 (19 aprile 2023): 89–110. http://dx.doi.org/10.33258/bioex.v5i2.879.
Testo completoAbstract (sommario):
Ecological charcoal is coal produced from biodegradable residues rich in carbon, mainly from agricultural residues. This charcoal has been obtained with different operations such as carbonization, molding and compacting to obtain briquettes. To ensure the quality of the coal, several analyses were carried out in the laboratories. The physicochemical characteristics such as moisture content, ash content, fixed carbon content; volatile matter index and lower calorific value are analyzed to better exploit their uses. Its exploitation has many advantages especially in the field of health and environment, especially for the reduction of deforestation and air pollution. This research gives 5 varieties of ecological coal obtained by the valorization of agricultural waste in the region of Vakinankaratra, a region located in the highlands of Madagascar and known for its high potentiality in agriculture and livestock. It is about the valorization of rice straw, rice husk, corn straw, banana peelings, and soybean stalks.
Tesi sul tema "Agricultural valorization"
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Duval, Alexandra M. "Valorization of Carrot Processing Waste". DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2155.
Testo completoAbstract (sommario):
Commercial carrot processors produce up to 175,000 tons of carrot waste annually. Carrot Mash (CM) is the term referring to the waste by-product of peeled baby carrot processing. Transportation of carrot processing waste is expensive due to its high- water content (approx. 83-95%). High in bioactive compounds (carotenoids) and dietary fibers, it is expected that its conversion into a value-added by-product is of interest to the carrot processing industry. Hemicellulose-rich plant materials have proven to be a source of oligosaccharides, which are known for their beneficial prebiotic activity. The objectives of this research were to: 1) determine the effect of mechanical treatments on the extraction of water and bioactive compounds and evaluate the functional properties of carrot mash; 2) incorporate dried carrot mash into a beef patty and evaluate changes in pH, color, cooking yield, and texture; 3) apply an enzymatic treatment to carrot mash to promote the conversion of polysaccharides to oligosaccharides for prebiotic benefits.
Mechanical separation of liquid and solid fractions by way of expeller pressing was efficient in extracting liquid while simultaneously increasing total solids by nearly 200%, the extraction of carotenoids by 1000%, and polyphenol content by nearly 97%. Mechanical treatments increased the fat binding capacity on average by 183% compared to untreated mash. The addition of unpressed carrot mash or expeller pressed carrot mash increased the cooking yield of a beef patty by 3-13% without significantly changing its textural properties. Enzymatically treating the carrot mash significantly increased the concentration of oligosaccharides up to 2.3%.
These results suggest that carrot processing wastes can be physically and enzymatically modified and have an immense potential to be utilized as a functional ingredient in human food rather than being landfilled, composted or used as animal feed.
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Woomer, Joseph. "VALORIZATION OF PROSO MILLET AND SPENT GRAIN FOR EXTRUDED SNACK DEVELOPMENT". UKnowledge, 2018. https://uknowledge.uky.edu/bae_etds/61.
Testo completoAbstract (sommario):
Fast-paced lifestyles result in consumers replacing traditional meals with on-the-go snack foods. In general, snacks are higher in saturated fats and simple sugars, and pose health concerns for consumers, which prompts the need for healthy nutritious alternatives to common snacks. Proso millet is a nutritious, and fast growing gluten free cereal. Spent grain (SG), the main by-product of brewing and distilling, contains high amount of protein and insoluble fibers. This study utilized proso millet and spent grain in the production of an extruded expanded snack, demonstrating their appropriateness as an ingredient in food production.
The first objective of this study was to determine the effect of extrusion processing conditions (moisture, barrel temperature, screw speed) on the physical, chemical, and functional properties of proso millet based extruded snack. The second objective of this research was to determine the effect of distiller’s spent grain (DSG) addition level and particle size on physicochemical and functional properties of extruded snacks. The third objective of this research was to evaluate the effect of spent grain type and particle size on the physicochemical and functional properties of extruded snacks. Samples were produced using a co-rotating twin-screw 25:1 L/D laboratory scale extruder.
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Stökle, Katrin [Herausgeber]. "A biorefinery approach for the valorization of agricultural residues using the example of sugar extraction from Cichorium intybus var. foliosum roots". Düren : Shaker, 2021. http://d-nb.info/1240853858/34.
Testo completo
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Prudent, Pascale. "Origine et spéciation des métaux en traces dans les déchets ménagers, leur évolution au cours du compostage et de la valorisation agricole = Origin and speciation of trace metals in municipal solid wastes, their evolution during composting and agricultural valorization". Aix-Marseille 1, 1993. http://www.theses.fr/1993AIX11060.
Testo completoAbstract (sommario):
L'etude de l'origine et de la speciation des metaux en traces dans les dechets menagers a ete realisee par les extractions chimiques selectives sur les principaux constituants et sur un lot reconstitue. L'evaluation des risques de transfert de ces metaux a l'environnement doit tenir compte de la forme chimique du metal et de la proportion du constituant concerne au sein du lot. Ces resultats permettent d'avoir une approche du tri le plus efficace a effectuer pour obtenir un compost de qualite et, dans ce contexte, des premiers essais de reduction de la charge metallique des dechets ont ouvert des perspectives interessantes en combinant la simplicite d'un tri densimetrique et les possibilites d'utilisation de complexants. Le suivi de l'evolution des especes metalliques est entrepris durant le procede biologique de compostage de dechets tries et, ceci en parallele du suivi de l'evolution de la matiere organique. Il est apparu que le phenomene de maturation est caracterise par une augmentation de la matiere organique extractible. Des composes organiques fixant specifiquement les metaux ont ete isoles. Au moyen d'une methode mathematique, un indice de maturation est propose. Par la suite, le devenir des especes metalliques apportees par le compost a ete suivi apres son epandage sur un sol
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Chiocchio, Ilaria <1991>. "Natural product chemistry and metabolomics: a roadmap through circular economy, sustainable agriculture, and biodiversity valorization". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amsdottorato.unibo.it/9981/3/Chiocchio_Ilaria_Tesi.pdf.
Testo completoAbstract (sommario):
Inspired by the Sustainable Developmental Goals of the Agenda 2030, this work addressed three topics of pivotal importance in the sustainability era, namely: circular economy, sustainable agriculture, and biodiversity valorization. Natural products chemistry and metabolomics were keys to achieve the following aims: 1) the valorization of waste plant material for circular economy, 2) the achievement of deep knowledge of plant-environment interactions in view of sustainable agriculture, 3) the biodiversity valorization through the investigation of local flora.
The first aim was accomplished by analyzing the phytochemical profile and the bioactivity of neglected plants matrices. Residues of aromatic plants after distillation resulted active against a plant pathogen suggesting a potential reuse of these matrices in agriculture. In addition, by-products of chestnut cultivation proved endowed with in vitro neuroprotective properties.
The second aim was achieved by the development of two case studies. In particular, a work was carried out in field to study Sorghum bicolor subjected to several environmental and anthropic factors, and the other one in greenhouse exploring Taxus baccata responses to different LED lighting. Metabolomics proved successful to identify sorghum biomarkers for crop quality and development and allowed to monitor taxus growth providing useful insights for sustainable agriculture.
To achieve the third aim, spontaneous plants collected in Sardinia were investigated for their antiproliferative activities. Five plants resulted endowed with promising bioactivity thus their phytochemical composition was investigated through NMR spectroscopy. Finally, a focus on chemodiversity was placed by studying Solanum dulcamara chemotypes through MS metabolomics which revealed that the chemotypes differed for the leaf steroidal glycoalkaloids.
The overall thesis work underlined the importance of plant specialized metabolites in multiple fields and demonstrated that the study of these molecules aids the sustainable development, enhancing circular economy, sustainable agriculture, and biodiversity valorization. In this context, metabolomics approach resulted particularly interesting.
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Mzahma, Sourour. "Impact sur des sols agricoles et des plantes de l'irrigation par des effluents textiles traités". Electronic Thesis or Diss., Strasbourg, 2024. http://www.theses.fr/2024STRAH001.
Testo completoAbstract (sommario):
L’industrie textile est la plus polluante de tous les secteurs industriels. Ce secteur n’est seulement pas un grand consommateur d’eaux mais rejette aussi d’énormes quantités d’eaux usées chargées en sels, colorants, détergents, métaux lourds, matières organiques dégradables, des agents stabilisants, etc. Le rejet de ces eaux présente des risques pour les hydroécosystèmes, le sol et les plantes. En plus des effets néfastes des effluents textiles non traités sur l’environnement, s’ajoute le problème de la pénurie d’eau qui s’aggrave de plus en plus, la forte demande en eau dans le secteur agricole et le manque de fourrage dans certains pays dans le monde tel que la Tunisie. Dans ce sens, plusieurs procédés ont été développés pour traiter les effluents textiles à savoir l’oxydation chimique, la coagulation chimique, la biodégradation, l’adsorption et les procédés membranaires. Cependant, peu d'études se sont intéressées à l'impact de l'irrigation avec ces effluents traités sur les sols et les végétaux.L’objectif de cette thèse est la réutilisation des effluents textiles traités (ETT) en mettant en évidence des scénarios de valorisation agricole de ces effluents. Le travail consiste à soumettre les effluents secondaires (TB) d’une usine textile Tunisienne à des traitements supplémentaires par ultrafiltration (UF), nanofiltration (NF) et osmose inverse (OI). Etant donnée que les effluents de TB sont caractérisés par une salinité élevée, un scénario de couplage a été envisagé en mélangeant 50/50 (V : V) les eaux de traitement biologique (TB) avec les eaux de puits (S) (TB/S) et les eaux de NF (TB/NF). L'impact de l'irrigation avec ces eaux sur les paramètres physico-chimiques et biologiques d’un sol local et sur la croissance, la composition minérale et l’absorption des ETM chez une plante fourragère : Sesbania bispinosa a été évalué. Une caractérisation physico-chimique des eaux d’irrigation a été réalisée, ainsi qu’une évaluation du potentiel génotoxique des sols irrigués par les ETT.Les résultats indiquent que la qualité des ETT n’est pas stable dans le temps et varie en fonction des procédés de production. Le TB ne répond pas aux exigences de la norme NT 106.03 relative à la réutilisation des eaux usées en agriculture. Ces eaux sont caractérisées par un pH, CE et des teneurs en Na+, Cl- et SO42- élevées. Bien que les membranes NF et OI réduisent efficacement la salinité et les teneurs en ces éléments, et ne présentent pas de risque sur le sol et les plantes avec l’absence de pouvoir génotoxique des sols sur les plantes, ces techniques produisent des rejets hydriques plus concentrés. Par conséquent, le couplage des eaux de TB avec les eaux de puits constitue la meilleure alternative pour une valorisation agricole. Ce couplage a permis d’alléger la salinité des eaux de TB en réduisant les teneurs en éléments chimiques tel que Na+, Cl- et SO42-. La réutilisation de ces eaux a des fins agricoles n’a pas montré d’effets négatifs sur la croissance et la nutrition minérale de S.bispinosa, n’a pas présenté de risques sur la qualité physico-chimique du sol et a contribué à une amélioration de l’activité enzymatique dans le sol.Le couplage des eaux constitue donc une option de valorisation. C’est une solution simple et peu coûteuse qui, d’une part, aide à pallier le manque d’eau et, d’autre part, réduit les quantités d’eau rejetées dans l’environnement par les industries textilesThe textile industry is the most polluting of all industrial sectors. This sector is not only a large consumer of water, but it also discharges enormous quantities of wastewater loaded with salts, dyes, detergents, heavy metals, degradable organic materials, stabilizing agents, etc. The discharge of this water presents risks for hydro-ecosystems, soil, and plants. In addition to the harmful effects of untreated textile effluent on the environment, there is the problem of water scarcity which is becoming increasingly serious. the high demand for water in the agricultural sector, and the lack of fodder in some countries around the world such as Tunisia. In this sense, several processes have been developed to treat textile effluents such as chemical oxidation, chemical coagulation, biodegradation, adsorption, and membrane processes. However, few studies have focused on the impact of irrigation with these treated effluents on soils and plants.The objective of this thesis is the reuse of treated textile effluent (TTE) using scenarios of agricultural valorization of these waters. This work consists of submitting biological treatment (TB) effluents from a Tunisian textile factory to additional treatments by ultrafiltration (UF), nanofiltration (NF), and reverse osmosis (RO). Given that TB effluents are characterized by high salinity, a coupling scenario was considered by mixing 50/50 (V: V) biological treatment water (TB) with well water (S) (TB/S) and NF waters (TB/NF). The impact of irrigation with these waters on the physicochemical and biological parameters of the soil and on the growth, mineral composition, and absorption of MTE in a forage plant: Sesbania bispinosa was evaluated. A physicochemical characterization of irrigation water was carried out with an evaluation of the genotoxic potential of soils irrigated by TTE.The results indicate that the quality of TTE is not stable over time and varies according to the production processes. TB does not meet the requirements of the NT 106.03 standard relating to the reuse of wastewater in agriculture. These waters are characterized by high pH, EC, and Na+, Cl- and SO42- contents. Although NF and RO membranes effectively reduce salinity and the contents of these elements and do not present any risk to the soil and plants with the absence of genotoxic effect of soils on plants, these techniques produce more concentrated water discharges. Consequently, the coupling of TB water with well water constitutes the best alternative for agricultural valorization. This coupling made it possible to reduce the salinity of TB water by reducing the contents of chemical elements such as Na+, Cl-, and SO42-. The reuse of this water for agricultural purposes did not show negative effects on the growth and mineral nutrition of S.bispinosa, did not present risks on the physico-chemical quality of the soil, and contributed to an improvement in enzymatic activity in the soil. Therefore, water coupling constitutes a valorization option. It is a simple and inexpensive solution which, on the one hand, makes it possible to overcome the lack of water and, on the other hand, reduces the quantities of water released into the environment by the textile industries
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Praly, Cécile. "Nouvelles formes de valorisation territoriale en agriculture : le cas de l’arboriculture de la moyenne vallée du Rhône". Thesis, Lyon 2, 2010. http://www.theses.fr/2010LYO20038/document.
Testo completoAbstract (sommario):
L’arboriculture de la Moyenne Vallée du Rhône, concurrencée par les pays à faible coût de production, subit une importante crise structurelle. Dans ce contexte, nous interrogeons les liens existants entre l’arboriculture et ses territoires. Ils peuvent en effet constituer des ressources mobilisées par les acteurs locaux pour développer des formes de valorisation territoriale.Le modèle productif historique de l’arboriculture de la Moyenne Vallée du Rhône, celui de bassin de production-expédition, est aujourd’hui remis en question par deux tensions opposées. La première, dite « centrifuge », est exercée par les principaux expéditeurs qui élargissent leur aire d’approvisionnement au-delà de celle du bassin de production pour être capables d’offrir des volumes de fruits standardisés satisfaisant à la demande des grands distributeurs. A l’inverse, un ensemble de tensions « centripètes » produisent un effet de morcellement interne au bassin, résultant des initiatives d’identification territoriale des fruits portées par les producteurs. A l’intersection de ces tensions, les arboriculteurs développent des stratégies pour maintenir la viabilité économique de leurs exploitations. La tendance est d’ajouter aux circuits d’expédition existants de nouveaux débouchés qui valorisent plusieurs proximités entre production et consommation. Nous décrivons ainsi des « circuits de proximité » pluriels et multi-scalaires, où interviennent différents types de professionnels (grossistes, détaillants, IAA), de consommateurs (habitants ou plus éloignés) et de modes de commercialisation. S’articulant entre concurrence et complémentarité au bassin de production-expédition, ces circuits bénéficient de soutiens de la part des collectivités territoriales. La conclusion de la thèse propose une caractérisation des différents circuits de proximité ainsi qu’un cadre théorique pour penser la diversité des formes de valorisation territoriale en agricultureThe fruit growing sector in the Middle Rhône Valley, competed by low-cost-production countries, faces a serious structural crisis. Then, we analyze the links between the arboriculture and its territories which can constitue resources mobilized as territorial valorization forms by local actors.The historic productive model of the arboriculture in the Middle Rhône Valley, the production-shipping basin, is now questioned by two rival forces. The first, called « centrifugal », is exercised by the main shippers who enlarge their supply area to be able to deliver large volumes of standardized fruits, relevant for the main retailers demand. In the opposite, some « centripetal » forces produce a fragmentation effect in the basin. These result from territorial identification initiatives for fruits, lead by the producers.Between these forces, farmers develop some strategies to maintain economic viability of their farms. They add to the existing shipping-circuits news outlets which valorize various proximities between production and consumption. We describe multi-scale « proximity circuits », including different types of the fruits supply chain actors, of consumers and marketing chanels. These circuits are shaped by competition and complementarity relationships with the basin of production-shipping. They benefit from the local communities supports.The conclusion of the research displays a characterization of the different proximity circuits and a theorical model to analyze the diversity of territorial valorization forms in agriculture
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Jaouachi, Tahar. "Les enjeux de l’olivier en situations urbaine et périurbaine : nouvelles constructions territoriales et prospectives : cas du cordon littoral Centre–Sud tunisien". Thesis, Clermont-Ferrand 2, 2016. http://www.theses.fr/2016CLF20010/document.
Testo completoAbstract (sommario):
Alors que de nouveaux usages des espaces ruraux se développent sous l’effet combiné des dynamiques urbaines et touristiques, la question de l’effet de l’urbanisation sur les oliveraies du littoral tunisien est questionnée. L’hypothèse de base est que le développement économique et touristique important, associé à une urbanisation peu planifiée, met en danger l’oléiculture du littoral Centre-Sud tunisien, culture stratégique dans l’économie et la société du pays. L’objectif de la thèse est de comprendre les places (spatiales, économiques, culturelles, paysagères, etc.) du système de l’olivier. Il s’agit d’étudier les enjeux de l’olivier en situations urbaine et périurbaine. Dans une première partie est exposée la démarche conceptuelle, méthodologique et pratique qui permet d’appréhender les enjeux de l’agriculture urbaine et périurbaine et de l’olivier. Le concept du système de l’olivier est alors inscrit dans un méta-système littoral territorial afin de rendre compte des temporalités, du jeu des acteurs locaux publics et privés autour de la place et des fonctions de l’activité oléicole. Ce concept est à la base de l’analyse systémique de l’oléiculture littorale urbaine et périurbaine du cordon littoral, dont les résultats sont développés pour saisir les facteurs de résistance et les nouvelles valeurs de l’olivier. Il est tout d’abord montré comment les interactions dynamiques entre des événements d’ordre démographique, socioéconomique et politique ont conduit à transformer l’espace oléicole littoral en espace mixte, agricole, urbain et touristique. Mais, les transformations spatiales et les dynamiques agri-urbaines, conjuguées aux évolutions culturelles des populations locales se traduisent par l’émergence de nouveaux rapports, non seulement contradictoires, mais aussi reliés : environnementaux, patrimoniaux, paysagers, etc. Dans cette perspective, les notions de ressources paysagères et patrimoniales deviennent un nouveau point de recherche pour saisir les atouts et les limites des processus mis en oeuvre. Ceci oriente la recherche vers des questions nouvelles, notamment celle de la valorisation territoriale qui s’appuient sur les potentialités et les nouvelles valeurs de l’olivier (patrimoniale, paysagère et économique), tout en tirant profit du développement touristique sur le littoralWhen new uses of rural areas are developed through a combination of urban and tourist dynamics, the question of the impact of urbanization on the olive groves of the Tunisian coast is presents itself. The basic assumption is that the major economic and tourism development, coupled with an uncontrolled urbanization, and supported by inadequate policies, create a threat on the olives growing along the central and southern Tunisian coast, this is a strategic culture for the national economy. The aim of the thesis is to understand the places (spatial, economic, cultural, etc.) of the olive tree system, and to study the issues of olive trees in urban and suburban situations. In the first part is demonstrated the approach and methodology that allows understanding the issues of the urban and suburban agriculture and olive groves. The concept of the olive tree system is then placed in a coastal metasystem to understand the time frames, the interactions between the actors around the place and the functions of the olive sector. This concept is the base of a systemic analysis of olive groves. The results are, then, developed to study the factors of resistance and new values of the olive tree. It is first shown how the dynamic interactions between the demographic, the socio-economic and the political events led to transform the olive’s landscape coastline to a mixed area: agricultural, economic and tourism. However, the territorial transformations and the different dynamics, combined with the cultural developments can be observed in the emergence of new interactions, not only contradictory but also affective: environmental and patrimonial. The landscape and heritage resources notions have become a new subject of research to understand the potential and new values of olive tree
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Vertonha, Maria Thais. "Valorization of leached waters through conversion in liquid fertilizers". Master's thesis, 2018. http://hdl.handle.net/10198/21034.
Testo completoAbstract (sommario):
Dupla diplomação com a UTFPR - Universidade Tecnológica Federal do ParanáAn unprecedented demographic explosion occurred in the last decades at a global level. The negative impacts of this event stand out, affecting the social, economic and mainly environmental spheres. In the environmental aspect, an important consequence is the growing production of solid wastes, due partially to the population increase. However, the development of effective technologies for the treatment of these wastes did not accompany such growth, and currently the most used method for this is landfill disposal. Even with the possibility of alternatives, the use of landfills for the disposal of solid wastes will be necessary over a long period, with the inevitable consequence of the generation of leachate streams. The objective of this work is the development, design and implementation of processes for physicochemical conversion of leachate liquid effluents from a composting process in liquid fertilizers with a standardized and reproducible composition. The leachate sample was collected in February 2019 from the slurry storage tank of the company “Resíduos do Nordeste”, EIM (Urjais, Mirandela, Portugal). The stream is produced and recovered from a composting line from a mechanical and biological waste treatment plant. From this original sample, three additional materials were obtained: a filtered sample for the removal of the solid fraction (Filtro 03/04), two concentrated samples by simple distillation, with two concentration levels in volume basis: 1,19x and 1,85x in relation to the original leachate sample. The four samples (the original leachate and the three processed samples) were submitted to a sequence of analyzes, in order to compare its composition and properties with the current Portuguese and European legislation specifications for liquid fertilizers. The selected characterization parameters were: Total Organic Carbon (TOC), pH, Conductivity, Percentage of Dry Matter, Density, and Heavy Metals, Phosphorus, Potassium and Nitrogen contents. Adsorption tests were performed with the Filter 03/04 sample, with two adsorbents of different origin, the first produced from an organic compound, resulting from a centralized composting process, obtained from the same landfill that provided the Original sample. The second adsorbent tested is activated clays, originating from four different deposits in Kazakhstan. After treatment with the adsorbents, the same analyzes were performed previously, aiming to evaluate the efficiency of the adsorbents. The characterization results were then used to verify the framework for later use of the original leachate and/or the processed samples as liquid organomineral fertilizers, and to assess the specific needs of composition tuning for the non-processed leachate sample. A concentration process for the original sample of 1,19x (v/v) has been determined to allow the reaching of at least 3% TOC, a content legally required. Additionally, treatment is required for the removal of nickel and chromium from the samples. The metals zinc, copper, cadmium and lead have been quantified and are within the limits specified in the Regulation of the European Parliament and of the Council (2019). A flowchart for the proper treatment of this leachate was proposed, with the intention of using it as liquid organomineral fertilizer.
Uma explosão demográfica sem precedentes ocorreu nas últimas décadas a nível global. Destacam-se os impactos negativos deste evento, afetando as esferas social, econômica e principalmente ambiental. No aspeto ambiental, uma consequência importante é a crescente produção de resíduos sólidos, em parte devido ao aumento populacional. No entanto, o desenvolvimento de tecnologias eficazes para o tratamento desses resíduos não acompanhou esse crescimento, e atualmente o método mais utilizado para isso é o descarte em aterros sanitários. Mesmo com a possibilidade de alternativas, o uso de aterros sanitários para a disposição de resíduos sólidos será necessário por um longo período, com a inevitável consequência da geração de caudais de chorume. O objetivo deste trabalho é o desenvolvimento, proposta e implementação de processos de conversão físico-química de efluentes líquidos lixiviados, de um processo de compostagem, em fertilizantes líquidos com uma composição padronizada e reprodutível. A amostra de lixiviados foi coletada em fevereiro de 2019 a partir do tanque de armazenamento de chorume da empresa “Resíduos do Nordeste”, EIM (Urjais, Mirandela, Portugal). O fluxo é produzido e recuperado de uma linha de compostagem de uma estação de tratamento de resíduos mecânica e biológica. Desta amostra original, três materiais adicionais foram obtidos: uma amostra filtrada para a remoção da fração sólida (Filtro 03/04), duas amostras concentradas por destilação simples, com dois níveis de concentração em base volumétrica: 1,19x e 1,85x em relação a amostra original. As quatro amostras (o lixiviado original e as três amostras processadas) foram submetidas a uma sequência de análises, de modo a comparar a sua composição e propriedades com as atuais especificações da legislação portuguesa e europeia para fertilizantes líquidos. Os parâmetros de caracterização selecionados foram: teor de carbono orgânico total (TOC), pH, condutividade elétrica, percentagem de matéria seca, densidade e metais pesados, fósforo, potássio e nitrogênio. Foram realizados testes de adsorção com a amostra Filtro 03/04, com dois adsorventes de origem diferente, o primeiro produzido a partir de um composto orgânico, resultante de um processo de compostagem centralizada, obtido do mesmo aterro sanitário que forneceu a amostra Original. O segundo adsorvente testado, são as argilas ativadas, originárias de quatro depósitos diferentes do Cazaquistão. Após o tratamento com os adsorventes foram realizadas as mesmas análises feitas anteriormente, com o objetivo de avaliar a eficiência dos adsorventes. Os resultados da caracterização foram então utilizados para verificar a estrutura para posterior utilização do lixiviado original e/ou as amostras processadas como fertilizantes organominerais líquidos, e para avaliar as necessidades específicas de ajuste da composição. Um processo de concentração para a amostra original de 1,19x (v/v) foi determinado para permitir o alcance de pelo menos 3% de TOC, um conteúdo legalmente requerido no Regulamento do Parlamento Europeu e do Concelho (2019). Além disso, é necessário um tratamento para a remoção de níquel e cromio das amostras. Os metais zinco, cobre, cádmio e chumbo foram quantificados e estão dentro dos limites especificados no Regulamento do Parlamento Europeu e do Conselho (2019). Um fluxograma para o tratamento adequado desse lixiviado foi proposto, com o intuito de utilizá-lo como fertilizante organomineral líquido.
This work was carried out under the scope of Project VALORCOMP, funded by FEDER through Programme INTERREG V-A Spain − Portugal (POCTEP) 2014–2020. Finally, to all who have somehow been part of this period and collaborated to carry out this work, I will be eternally grateful.
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Branco, Pedro Miguel Sena da Costa. "Integrated valorization of Anona Cherimola Mill. seeds". Doctoral thesis, 2016. http://hdl.handle.net/10400.13/1140.
Testo completoAbstract (sommario):
Agricultural and agro-industrial residues are often considered both an environmental and an economical problem. Therefore, a paradigm shift is needed, assuming residues as biorefinery feedstocks. In this work cherimoya (Annona cherimola Mill.) seeds, which are lipid-rich (ca. 30%) and have a significant lignocellulosic fraction, were used as an example of a residue without any current valorization.
Firstly, the lipid fraction was obtained by solvent extraction. Extraction yield varied from 13% to 28%, according to the extraction method and time, and solvent purity. This oil was converted into biodiesel (by base-catalyzed transesterification), yielding 76 g FAME/100 g oil. The obtained biodiesel is likely to be incorporated in the commercial chain, according to the EN14214 standard.
The remaining lignocellulosic fraction was subjected to two alternative fractionation processes for the selective recovery of hemicellulose, aiming different products. Empirical mathematical models were developed for both processes, aiming future scale-up.
Autohydrolysis rendered essentially oligosaccharides (10 gL-1) with properties indicating potential food/feed/pharmacological applications. The remaining solid was enzymatically saccharified, reaching a saccharification yield of 83%.
The hydrolyzate obtained by dilute acid hydrolysis contained mostly monosaccharides, mainly xylose (26 gL-1), glucose (10 gL-1) and arabinose (3 gL-1), and had low content of microbial growth inhibitors. This hydrolyzate has proven to be appropriate to be used as culture media for exopolisaccharide production, using bacteria or microbial consortia. The maximum conversion of monosaccharides into xanthan gum was 0.87 g/g and kefiran maximum productivity was 0.07 g.(Lh)-1. This work shows the technical feasibility of using cherimoya seeds, and materials as such, as potential feedstocks, opening new perspectives for upgrading them in the biorefinery framework.
Libri sul tema "Agricultural valorization"
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Someus, Edward. Food crop mineral deficiency & disturbance stress mitigation in temperate climatic regions by economical & environmental valorization of agricultural by-products. Hauppage: Nova Science, 2009.
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Pal, Dan Bahadur, e Amit Kumar Tiwari, a cura di. Sustainable Valorization of Agriculture & Food Waste Biomass. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0526-3.
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Weinreb, Alice. Blood and Soil. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780190605094.003.0003.
Testo completoAbstract (sommario):
This chapter analyzes the food economy of the Third Reich, arguing that the Nazi state relied on individual food acts (eating, cooking, and shopping) to create and maintain racial categories. It looks at the ways in which the country’s rationing program gave new categories of race, and especially the category of the Jew, bodily significance by shaping what people could and should eat. This also meant that racial belonging determined life by determining food supply. Not only Jews and other undesirable races but also Aryans were defined through the food system. This was done by Nazi agricultural discourse that linked racial health with controlling Eastern European farming land, as well by as the valorization of specific foods like the casserole (Eintopf) and whole-grain bread.
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Shahid-ul-Islam. Handbook of Biomass Valorization for Industrial Applications: Food, Agriculture and Environmental Sectors. Wiley & Sons, Limited, John, 2023.
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Oakley, Stewart M. Integrated Wastewater Management for Health and Valorization: A Design Manual for Resource Challenged Cities. IWA Publishing, 2022. http://dx.doi.org/10.2166/9781789061536.
Testo completoAbstract (sommario):
Abstract Adequate wastewater treatment in low to medium income cities worldwide has largely been a failure despite decades of funding. The still dominant end-of-pipe paradigm of treatment for surface water discharge, focusing principally on removal of organic matter, has not addressed the well-published problems of pathogen and nutrient release with continued contamination of surface waters. This book incorporates the new paradigm of integrated wastewater management for valorization without surface water discharge using waste stabilization pond systems and wastewater reservoirs. In this paradigm the purpose of treatment is to protect health by reducing pathogens to produce an effluent that is valorized for its fertilizer and water value for agriculture and aquaculture. Methane production as a sustainable energy source is also considered for those applications where it is appropriate. Emphasis is on sustainable engineering solutions for low to medium income cities worldwide. Chapters present the theory of design, followed by design procedures, example design problems, and case study examples with data, diagrams and photos of operating systems. Excel spreadsheets and the FAO program CLIMWAT/CROPWAT are included in examples throughout. Sections on engineering practice include technical training, operation and maintenance requirements, construction and sustainability. The book incorporates design and operating data and case studies from Africa, Australia, Latin America, Europe, New Zealand, and the US, including studies that have been published in French, Portuguese, and Spanish. The book is designed for upper-division and graduate level engineering students, practicing engineers, regulatory professionals who help establish and enforce effluent standards, international development professionals, and policy stakeholders. ISBN: 9781789061529 (paperback) ISBN: 9781789061536 (eBook) ISBN: 9781789061543 (ePUB)
Capitoli di libri sul tema "Agricultural valorization"
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Prasad, Shiv, Dheeraj Rathore e Anoop Singh. "Agricultural Waste Valorization: An Energy Production Perspective". In Bio-valorization of Waste, 249–60. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9696-4_11.
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Kumar, Prasann, Amit Raj e Vantipalli Aravind Kumar. "Approach to Reduce Agricultural Waste via Sustainable Agricultural Practices". In Valorization of Biomass Wastes for Environmental Sustainability, 21–50. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-52485-1_2.
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Bharti, Dipti, Abhilekha Sharma, Meenakshi Sharma, Rahul Singh, Amit Kumar e Richa Saxena. "Cultivating a Greener Tomorrow: Sustainable Agriculture Strategies for Minimizing Agricultural Waste". In Valorization of Biomass Wastes for Environmental Sustainability, 317–33. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-52485-1_18.
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Said, Farhan M., Nor Farhana Hamid, Mohamad Al-Aamin Razali, Nur Fathin Shamirah Daud e Siti Mahira Ahmad. "Transformation Process of Agricultural Waste to Chemical Production via Solid-State Fermentation". In Bio-valorization of Waste, 187–201. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9696-4_8.
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Kumar, Nitin, e Sunil Kumar Gupta. "Advances in Thermochemical Valorization of Agricultural Waste". In Agricultural Waste to Value-Added Products, 159–76. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-4472-9_8.
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Ruchika e Ankit Saneja. "Valorization of Sitosterol from Agricultural Waste as Therapeutic Agent". In Sustainable Agriculture Reviews 56, 115–42. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-84405-9_5.
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Nanni, Paolo. "L’agricoltura e il lavoro agricolo". In Idee di lavoro e di ozio per la nostra civiltà, 353–62. Florence: Firenze University Press, 2024. http://dx.doi.org/10.36253/979-12-215-0319-7.42.
Testo completoAbstract (sommario):
During the Middle Ages agriculture and agricultural labor was involved in a new system of values, due to the expansion of Christianity, and this valorization had a great impact on society and economic development of Western Europe. Agriculture was considered part of the artes mechanicae and peasants (laboratores) were recognized as one of the three orders of the social representation. However, in the 13th-15th centuries, there were some significant changes such as the shift from serfdom to contracted work, investments in agriculture by citizens, and the development of new connection between cities and the countryside. Historical treatises on agriculture and other public sources provide evidence of these news ideas, that viewed agriculture as the “most useful and necessary” craft.
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Chimphango, A. F. A., L. R. Mugwagwa e M. Swart. "Extraction of Multiple Value-Added Compounds from Agricultural Biomass Waste: A Review". In Valorization of Biomass to Value-Added Commodities, 163–92. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-38032-8_9.
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Gupta, Kuldeep, Pritam Bardhan, Divya Bhatt, Muzamil Ahmad Rather, Parmanand Kumar, Laldingngheti Bawitlung, Manabendra Mandal e Rupam Kataki. "Evolution of Biological Pretreatment Methods for Agricultural Residues and Defatted Microalgae for Overcoming Biomass Recalcitrance in Biofuel Generation". In Enzymes in the Valorization of Waste, 209–33. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003187714-9.
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Tyagi, Uplabdhi, Neeru Anand e Arinjay Kumar Jain. "Valorization of Agricultural Waste Biomass Via Effective Pretreatment for Biorefinery Aspects". In Clean Energy Production Technologies, 29–49. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-0847-5_2.
Testo completoAtti di convegni sul tema "Agricultural valorization"
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"Evaluation of Parietal Polysaccharides and Polyphenols of Crataegus monogyna Jacq. and Valorization Prospects". In International Conference on Agricultural, Ecological and Medical Sciences. International Institute of Chemical, Biological & Environmental Engineering, 2015. http://dx.doi.org/10.15242/iicbe.c0415012.
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Elshabrawy, Salma O., Mohammad Mansour, Amal Elhussieny, Shimaa Husien, A. B. Abdel-Aziz, Irene S. Fahim, Lobna A. Said e Ahmed G. Radwan. "Valorization of Agricultural and Marine Waste for Fabrication of Bio-Adsorbent Sheets". In World Environmental and Water Resources Congress 2023. Reston, VA: American Society of Civil Engineers, 2023. http://dx.doi.org/10.1061/9780784484852.010.
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El Moussaoui, Tawfik, Mohamed Oussama Belloulid, Laila Mandi, Said Wahbi, Salvatore Masi e Naaila Ouazzani. "Eco-Efficient Approach for Wastewater Treatment and Agricultural Valorization: Fertigation Effect on Soil and Plant". In LAFOBA2. Basel Switzerland: MDPI, 2022. http://dx.doi.org/10.3390/environsciproc2022016062.
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Belghit, Chafik, e Abdelghani Djeddi. "Valorization of Agricultural Waste for the Production of Biogas in the framework of Renewable Energy Development in Algeria". In 2019 1st International Conference on Sustainable Renewable Energy Systems and Applications (ICSRESA). IEEE, 2019. http://dx.doi.org/10.1109/icsresa49121.2019.9182363.
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MĂRĂCINE, Daniela. "SUBSISTENCE AND SEMI-SUBSISTENCE FARMS SECTOR IN ROMANIA". In Competitiveness of Agro-Food and Environmental Economy. Editura ASE, 2022. http://dx.doi.org/10.24818/cafee/2019/8/22.
Testo completoAbstract (sommario):
The current rural development policy from 2014-2020, both at national and European level, affirms and supports the strengthening of the agricultural family sector as a guarantee for food security and safety and for maintaining rural social structures. During this programming period it is considered that subsistence and semi-subsistence farms can contribute to the dynamics of the territory, spatial planning and valorization of disadvantaged areas, promotion of local traditions and preservation of biological and cultural heritage. Family farms remain the best means for ensuring sustainable management of natural resources and biodiversity and preserving authentic rural life and sustainability of food production.
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Ratsimbazafy, Herinjaka Haga, Aurélie Laborel-Préneron, Camille Magniont e Philippe Evon. "Comprehensive Characterization of Agricultural By-Products for Bio-Aggregate Based Concrete". In 4th International Conference on Bio-Based Building Materials. Switzerland: Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/www.scientific.net/cta.1.77.
Testo completoAbstract (sommario):
The valorization of available agricultural by-products is important for the development of bio-aggregate based concretes as eco-friendly solutions for building materials. However, their diversity requires to assess their potential of use in vegetal concretes. This study aims to propose simple and relevant multi-physical characterization methods for plant aggregates. Basic and complementary characterizations were carried out on hemp shiv as a reference plant aggregate, and nine by-products available in the South-West part of France, i.e., oleaginous flax shiv, sunflower pith and bark, coriander straw, wheat straw, wheat chaff, corn shuck, miscanthus stem and vine shoot. The basic characterizations performed were those recommended by the TC-RILEM 236 BBM, i.e., particle size distribution, bulk density, water absorption and thermal conductivity. Complementary characterizations have also been proposed, taking into account the possible environment of the binder and the vegetal concrete manufacturing method. The additional tests developed or adapted from previous research assess the following properties: the content of water-soluble compounds at pH 7 and 12, the dry density of plant aggregates compacted in wet state, the real water absorption after compaction and the compression behavior of these compacted aggregates. This complete characterization highlights the distinct behavior of the different agroresources and allows to correlate these characteristics to the use properties of hardened composites.
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Ivanov, Metodi. "OPPORTUNITIES FOR FINANCING THE DEVELOPMENT OF LAGGING REGIONS IN THE CONTEXT OF LANDSCAPE VALORIZATION". In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023/5.1/s23.80.
Testo completoAbstract (sommario):
The implementation of the necessary studies to assess the potential for local socioeconomic development must be directly linked to the realization of the valorization of the landscape. On the one hand, by applying the valorization of the landscape, the potential opportunities for increasing the labor potential of the region can be discovered, and on the other hand, this process can lead to a decrease in the income of the local population, attracting a new economically active population. Stimulating the management of the participation of stakeholders in lagging regions in the maintenance and protection of specific elements of the landscape will create an opportunity both to attract external funding and to create a sense of belonging of the local population to the issues related to the management of landscape and environmental protection in the region. On the other hand, research justifying the search for financing opportunities in lagging regions should not focus only on the elements related to the study of the landscape, such as the presence of artificial surfaces, the volume of land cultivation, the number of permanent plantations per unit area, the designated pastures, the presence of heterogeneous agricultural areas, etc. Research should also cover the determination of anthropogenic and social patterns that affect not only the development of the territory, but also determine its potential utility, as well as its socio-economic value.
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Todorović, Nada. "LAND RENT AND LEASE IN THEORY AND PRACTICE". In International scientific conference challenges and open issues of service law. Vol. 2. University of Kragujevac, Faculty of law, 2024. http://dx.doi.org/10.46793/xxmajsko2.535t.
Testo completoAbstract (sommario):
Land rent has been the subject of consideration of both classical and neoclassical economic theory. In contemporary economic conditions this issue has not lost its importance although, today, land rent is considered in the context of sustainable and human development and the protection and preservation of natural resources. As long there is a monopoly on natural resources (land, mineral wealth, forest) there will be valorization of the ownership rights through rent appropriation. Basic forms of land rents are: absolute, differential I and II and monopoly land rent. Land rent and lease are not always the synonyms, since lease includes, in addition to rent, the compensation for all capitals attached to the land. In this paper, the author has focused on the issues related to the lease of state- owned agricultural land in Serbia and the problems which appear in practice pertaining to the realization of preemptive rights. From previous experience it can be seen that the use of state-owned agricultural land in Serbia has not been efficient, as well as the application of the regulated legal procedures, which is often running late. Consequently, it is the state itself and farmers who suffer the greatest damage. There is a large area of state-owned agricultural land which remains uncultivated and, therefore, the state cannot valorize its ownership right over this land through rent appropriation.
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Lazaroiu, Gheorghe, Rodica-Manuela Grigoriu, Dana-Alexandra Ciupageanu e Iulia Simion. "Efficient poultry industry waste management approach in the bioeconomy framework". In The 8th International Conference on Advanced Materials and Systems. INCDTP - Leather and Footwear Research Institute (ICPI), Bucharest, Romania, 2020. http://dx.doi.org/10.24264/icams-2020.iv.12.
Testo completoAbstract (sommario):
In order to ensure EU’s transition to a climate-neutral energy environment, in accordance with the Paris Agreement, enhanced energy efficiency of waste utilization emerges as an important tool to achieve carbon neutrality goals. Several technologies for renewable waste treatment are investigated lately, researches worldwide focusing on exploiting their energy potential and diminishing the environmental impact. It is remarkable that, solid renewable waste is suitable to supply in particular grate or layer combustion plants. This energy valorization solution reached the technical maturity, experimentally and numerically proven. Further, to support regional development incentives implementation, local utilization of different wastes is strongly encouraged. Considering the fairly uniform territorial spread of poultry farms in Romania, this paper presents a case study aiming to provide a sustainable solution for bird waste management and local energy recovery from it, avoiding significant additional costs, as well as storage and transportation issues. The energy independence level is assessed in two scenarios. To this regard, the energy consumption of a real poultry production hall of 910 m2 (located in Giurgiu County, having 4650 birds/operating cycle, with a poultry waste flow of 558 𝑘𝑔waste ⁄day) is taken into account. The first scenario analyzes the disposal (for energy recovery purposes) of poultry waste as an individual raw material, while the second scenario investigates a mixture of poultry waste and agricultural biomass residues. It is demonstrated that the electricity and heating requirements of the hall can be partially satisfied in the first scenario and fully in the second one. Therefore, the multi-waste management concept investigated in this paper represents a sustainable solution to reduce industry’s carbon footprint, answering multiple requirements in the environmentally friendly energy sector development.
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Karanisa, Theodora, Ahmed Ouammi, Helmi Hamdi, Imen Saadaoui, Noora Fetais e Sami Sayadi. "A Design-led FEWW Nexus Approach for Qatar University". In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2021. http://dx.doi.org/10.29117/quarfe.2021.0011.
Testo completoAbstract (sommario):
Demographic explosion, climate change, urbanization, change of life quality, and food demand have put extra pressure on Food, Energy, Water, and Waste (FEWW) resources.A special focus has been placed on university campuses as they are representative urban communities with a substantial need for food, energy, and water and they generate waste. Furthermore, universities can be models for the community as they can apply and disseminate new ideas. The case study of the Qatar University via the Doha Living Lab (DLL) generates ideas and gives solutions to the FEWW Nexus through urban agriculture practices adopted to the climatic conditions of Qatar. The DLL follows the M-NEX Design method consisting of three steps: Design Development, Design Evaluation, and Implementation by engaging stakeholders and the local community. The areas of the DLL increase food production on the campus while minimizing the use of energy and water, enhance biodiversity as well as soil quality by valorizing food waste. The carbon footprint of DLL is reduced by 2% when the same quantity of food is produced locally than imported. This applies when 75% of the energy needs come from renewable sources, 75% of the needed animal feed comes from bio waste, and finally, when novel greenhouse technologies are utilized with low energy consumption. According to the research results, the FEWW Nexus and food production on campus can be sustainable in terms of low carbon footprint with minimal resource use, use of renewable energy sources, and food waste valorization.