Relevant bibliographies by topics / Integrated valorization

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  2. Dissertations / Theses
  3. Books
  4. Book chapters
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Academic literature on the topic 'Integrated valorization'

Author: Grafiati
Published: 23 November 2024

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Journal articles on the topic "Integrated valorization"

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Ziller, Francesca. "Integrated Assessment for a Sustainable Valorization Project." SCIENZE REGIONALI, no. 1 (February 2014): 71–92. http://dx.doi.org/10.3280/scre2014-s01004.

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Flórez-Fernández, Noelia, Marta Illera, Marta Sánchez, Pablo Lodeiro, María Dolores Torres, María Elvira López-Mosquera, Manuel Soto, Manuel Sastre de Vicente, and Herminia Domínguez. "Integrated valorization of Sargassum muticum in biorefineries." Chemical Engineering Journal 404 (January 2021): 125635. http://dx.doi.org/10.1016/j.cej.2020.125635.

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Dixon, Richard A., Allen Puente-Urbina, Gregg T. Beckham, and Yuriy Román-Leshkov. "Enabling Lignin Valorization Through Integrated Advances in Plant Biology and Biorefining." Annual Review of Plant Biology 75, no. 1 (July 22, 2024): 239–63. http://dx.doi.org/10.1146/annurev-arplant-062923-022602.

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Despite lignin having long been viewed as an impediment to the processing of biomass for the production of paper, biofuels, and high-value chemicals, the valorization of lignin to fuels, chemicals, and materials is now clearly recognized as a critical element for the lignocellulosic bioeconomy. However, the intended application for lignin will likely require a preferred lignin composition and form. To that end, effective lignin valorization will require the integration of plant biology, providing optimal feedstocks, with chemical process engineering, providing efficient lignin transformations. Recent advances in our understanding of lignin biosynthesis have shown that lignin structure is extremely diverse and potentially tunable, while simultaneous developments in lignin refining have resulted in the development of several processes that are more agnostic to lignin composition. Here, we review the interface between in planta lignin design and lignin processing and discuss the advances necessary for lignin valorization to become a feature of advanced biorefining.
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Mohafid, Said, Laila Stour, and Ali Agoumi. "Multidimensional valorization of sediments trapped by dams for sustainable and integrated water resources management." Multidisciplinary Science Journal 6, no. 8 (February 20, 2024): 2024146. http://dx.doi.org/10.31893/multiscience.2024146.

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This article introduces an innovative demarche to sustainable and integrated water resource management by proposing a new strategy for valorizing sediments retained by dams, explicitly focusing on the Moroccan context. The novel demarche presented encompasses five critical dimensions related to sediment valorization: quality, quantity, space, time, and regulation. To achieve this, we have designed an optimal valorization approach complemented by a specific valorization guide tailored to the nuances of Moroccan laws and standards. Our methodology includes a detailed quantitative analysis of retained sediments, a qualitative assessment of their physical and chemical properties, and a spatiotemporal analysis of dam siltation. The optimal valorization approach aims to maximize the use of retained sediments by identifying suitable applications. Simultaneously, the specific guide provides a methodological and regulatory framework aligned with the region's legal requirements. The quantitative analysis evaluates measures taken to quantify sediments retained by dams, while the qualitative analysis assesses their physical and chemical characteristics and suitability for various applications. The spatiotemporal analysis offers a dynamic perspective on dam siltation, emphasizing the most affected areas and the evolution of trends over time. Anchored in the Moroccan context, this research provides crucial insights into the sustainable management of water resources through the integrated valorization of sediments trapped by dams. The presented results have significant implications for watershed management and the optimization of dam operations and reservoirs. Furthermore, they pave the way for similar approaches in regions grappling with reservoir sedimentation issues.
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Hidalgo, Dolores, Francisco Corona, Jesus M. Martin-Marroquin, Marta Gomez, Alicia Aguado, and Gregorio Antolin. "INTEGRATED AND SUSTAINABLE SYSTEM FOR MULTI-WASTE VALORIZATION." Environmental Engineering and Management Journal 13, no. 10 (2014): 2467–75. http://dx.doi.org/10.30638/eemj.2014.276.

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Conidi, C., A. Cassano, and E. Garcia-Castello. "Valorization of artichoke wastewaters by integrated membrane process." Water Research 48 (January 2014): 363–74. http://dx.doi.org/10.1016/j.watres.2013.09.047.

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Luo, Yiping, Zhichen Zhao, Bin Jiang, Min Wei, Zheng Zhang, Lisha Zeng, James H. Clark, and Jiajun Fan. "An integrated process for the valorization of corn stover promoted by NaCl in a GVL/H2O system." Green Chemistry 24, no. 4 (2022): 1515–26. http://dx.doi.org/10.1039/d1gc03999g.

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Zhang, Qing, and Hongjuan Zhang. "Assessing Agri-Food Waste Valorization Challenges and Solutions Considering Smart Technologies: An Integrated Fermatean Fuzzy Multi-Criteria Decision-Making Approach." Sustainability 16, no. 14 (July 18, 2024): 6169. http://dx.doi.org/10.3390/su16146169.

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With the growth of the worldwide population and depletion of natural resources, the sustainable development of food systems cannot be ignored. The demand for agri-food waste valorization practices like high-value compounds production has received widespread attention; however, numerous challenges still exist. The present study aims to identify those challenges of agri-food waste valorization and propose effective solutions based on smart technologies. Based on a systematic review of the literature, the study combs existing challenges of agri-food waste valorization and constructs a six-dimension conceptual model of agri-food waste valorization challenges. Moreover, the study integrates a Fermatean fuzzy set (FFS) with multi-criteria decision-making (MCDM) methods including stepwise weight assessment ratio analysis (SWARA), decision-making trial and evaluation laboratory-interpretative structural modeling method (DEMATEL-ISM), and quality function deployment (QFD) to evaluate the weights of each dimension, find causal interrelationships among the challenges and fundamental ones, and rank the potential smart solutions. Finally, the results indicate that the “Government” dimension is the severest challenge and point out five primary challenges in agri-food waste valorization. The most potential smart solution is the “Facilitating connectivity and information sharing between supply chain members (S8)”, which may help government and related practitioners manage agri-food waste efficiently and also facilitate circular economy.
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Barba, Francisco J. "An Integrated Approach for the Valorization of Cheese Whey." Foods 10, no. 3 (March 9, 2021): 564. http://dx.doi.org/10.3390/foods10030564.

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Taking into account the large amount of whey that is produced during the cheese production process and the constant demand by society for more sustainable processes, in accordance with Sustainable Development Goals (SDGs) and the circular economy concept, it is necessary to adapt two-unit operations into a single process, allowing us to not only valorize a part of the whey but the whole process, which is known as bioprocess integration. In this sense, the adaptation of different processes, for example, physicochemical (micro, ultra and nanofiltration) and fermentation, that are commonly used to obtain proteins, lactose and other compounds with different activities (antioxidant, antifungal, etc.) could be integrated to achieve a complete recovery of the cheese whey. Likewise, keeping in mind that one of the main drawbacks of cheese whey is the great microbial load, some innovative processing technologies, such as high hydrostatic pressures, electrotechnologies and ultrasound, can allow both the development of new foods from whey as well as the improvement of the nutritional and organoleptic properties of the final products prepared with cheese, and thus reducing the microbial load and obtaining a safe product could be incorporated in the cheese whey valorization process.
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Linger, J. G., D. R. Vardon, M. T. Guarnieri, E. M. Karp, G. B. Hunsinger, M. A. Franden, C. W. Johnson, et al. "Lignin valorization through integrated biological funneling and chemical catalysis." Proceedings of the National Academy of Sciences 111, no. 33 (August 4, 2014): 12013–18. http://dx.doi.org/10.1073/pnas.1410657111.

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Dissertations / Theses on the topic "Integrated valorization"

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Moretto, Giulia <1991&gt. "Urban organic waste valorization through an integrated pilot scale biorefinery for polyhydroxyalkanoates and biogas production." Doctoral thesis, Università Ca' Foscari Venezia, 2020. http://hdl.handle.net/10579/19519.

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The main three-year doctoral research activity is centered around the pilot scale implementation of a biorefinery aimed at the valorization of organic waste into polyhydroxyalkanoates (PHAs) and biogas. The whole production chain comprises the organic waste fermentation, the aerobic line for PHA production and the anaerobic co-digestion of the secondary waste streams produced within the biorefinery. A mixture of organic fraction of municipal solid waste and waste activated sludge from the municipal wastewater treatment was used as primary carbon source. The initial phases of the study focused on the fermentation process and the aerobic line, the most performing conditions corresponded to a fermentation yield (YVFA) equal to 0.40 g CODVFA/g VS and a storage yield in the accumulation phase (YP/VFAbatch) equal to 0.50 CODPHA/CODVFA. Then, the studies focused on the anaerobic line, i.e. the acidogenic fermentation and anaerobic co-digestion. Following studies aimed at the optimization of the fermentation process, the best obtained yields guaranteed a YVFA of 0.57 and 0.74 gCODVFA/g VS in batch and continuous tests respectively. The most performing conditions were then tested at pilot scale, the overall yield was considerably increased, reaching 76 g PHA/kg VS. In addition, legislative barriers and product social acceptance of waste derived bioplastics were preliminarily investigated. As final optimization, different operating conditions were investigated in the MMCs PHA selection process, that allowed to reach further improvement of the biorefinery overall yield, equal to 110 g PHA/kg VS. The results obtained in the present thesis shed a light on promising innovations in the field of organic waste valorization, proving the feasibility of the whole productive chain and its future industrial scale implementation.
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Chanouri, Hamza. "Valorisation des terres rares à partir du phosphogypse et boues phosphoriques : cas d'utilisation de la lixiviation basique." Electronic Thesis or Diss., Université Côte d'Azur, 2024. http://www.theses.fr/2024COAZ5029.

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Les approches hydrométallurgiques dévouées à l'extraction et la séparation des éléments de terres rares (TRs) ont devenus des thématiques de recherche d'actualité à l'échelle internationale en raison des propriétés physico-chimiques cruciales des TRs dans la technologie de pointe. Par conséquent, la dernière décennie a connu une forte préoccupation focalisée sur le développement des méthodes durables pour valoriser les TRs à partir des ressources de faible concentration, afin de remédier au problème de la dynamique croissante du marché de TRs issue du déséquilibre entre l'approvisionnement et la demande. En outre, les inquiétudes concernant l'épuisement des réserves naturelles primaires ont rendu nécessaire d'exploiter les ressources secondaires. Ainsi, plusieurs pays ont commencé à investir massivement dans la recherche, afin de développer des techniques rentables d'extraction des TRs à partir des ressources secondaires, des minerais à faible teneur et des déchets et sous-produits industriels, e.g., les argiles à adsorption d'ions, les boues rouges, les roches phosphatées, les phosphogypses (PG) et les boues phosphoriques (PS). À la lumière de toutes ces considérations, l'objectif de la présente thèse est de développer des nouveaux procédés pour la récupération des TRs à partir des sous-produits de l'industrie de phosphate, i.e., PG et PS, générés lors de la production et de la concentration d'acide phosphorique. Bien que la concentration des TRs dans ces sous-produits soit faible, leurs grandes quantités les positionnent comme des alternatives pertinentes. Cependant, la limitation de la faible concentration ainsi que la focalisation exclusive sur les TRs ont restreint la conception d'une méthode de lixiviation acide directe appropriée pour extraire ces éléments à partir du PG et des PS, ce qui souligne l'impératif d'explorer et de développer d'autres procédés basiques efficaces. Nos études se sont concentrées sur le déchiffrement de la spéciation probable des TRs dans les différentes matrices, leurs récupérations, ainsi que leurs enrichissements en utilisant différentes approches dépendantes du pH. En plus de susmentionné, la stratégie adoptée envisage le développement d'un procédé intégré pour exploiter tout le potentiel du PG et du PS, par co-extraction et valorisation d'autres composants de haute valeur ajoutée, i.e., le pentoxyde de phosphore, les sulfates, le calcium, le fluor, etc., pour une économie circulaire efficace qui se base sur la transformation des sous-produits en produits de hautes valeurs ajoutées
The hydrometallurgical approaches for extracting and separating rare earth elements (REEs) have emerged as international research hotspots due to the indispensable physicochemical properties of REEs in advanced technology. Hence, the last decade has witnessed a dramatic increase in the necessity of developing processing techniques to valorize REEs from low-grade resources to overcome the serious problem of balancing supply and demand. In addition, the concerns regarding the depletion of principal natural resource reserves have made it necessary to look for the cusp of a significant breakthrough that may pave the way for the mining of secondary resources. In light of all these considerations, several countries have started investing heavily in research and development of technologies directed towards cost-effective extraction of REEs from secondary resources, low-grade ores, and industrial wastes and by-products, such as ions adsorption clays, red muds, phosphate rocks, phosphogypsum (PG), and phosphoric sludges (PS). Consequently, the aim of this thesis is to contribute to the development of new technologies for REEs recovery from phosphate-derived minerals, i.e., PG and PS generated during phosphoric acid production and concentration in fertilizer industries. Despite the low concentration of REEs in these by-products but given their large amount they were considered as relevant alternatives. However, the tenuous concentration and sole targeting of REEs have constrained the development of an appropriate direct acidic leaching approach for REEs extraction from PG and PS, which enhanced the necessity of investigating the development of effective alkaline based processes. To address the challenging question regarding the beneficiation of REEs from diluted phosphate-derived by-products our research studies focused on deciphering the probable speciation of REEs in the parent matrices, their recovery, as well as their enrichment using different pH-dependent approaches. In addition, the investigated-developed processes embraced the strategy of by-products to high added value products by considering the development of an integrated process to make of use of all untapped potential of PG and PS, by co-extraction and valorization of other high value components, i.e., phosphorus pentoxide, sulfates, calcium, fluorine, etc., for an effective circular economy
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Aldaco, García Rubén. "Control de fluoruros con recuperación de producto." Doctoral thesis, Universidad de Cantabria, 2005. http://hdl.handle.net/10803/10684.

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La meta de esta tesis es impulsar las tendencias de desarrollo de la industria química que promueven la sostenibilidad de la misma. El objetivo es un control integrado de la contaminación que permita reducir las emisiones a fin de promover las actividades de producción sostenibles.En este sentido, el tratamiento de efluentes industriales con fluoruros consiste en una precipitación química. Sin embargo, el proceso genera elevadas cantidades de lodos con elevada humedad y bajo riqueza en fluoruro cálcico, por lo que su reutilización en la fabricación de HF no es viable técnica y económicamente.En esta tesis se presenta la recuperación de fluoruros de aguas industriales fluoradas mediante cristalización en un reactor de lecho fluidizado. Las principales ventajas de esta tecnología respecto del tratamiento convencional son la no generación de lodos, la reducción de residuos y la recuperación de fluoruro para su posterior valorización.
The aim of this thesis is to support the trends of the chemical industry development that promote sustainability. The goal is an integrated pollution control to reduce the emissions in order to promote sustainable production activities.In this sense, the common methods for fluoride removal from industrial wastewater involve chemical precipitation. The process generates large amounts of a water rich sludge requiring disposal with increasing costs. Due to the high water content and the low quality of the sludge, reuse of fluoride is not an economical option. The removal of fluoride in a fluidized bed reactor by crystallization has been presented in this thesis as an alternative to the chemical precipitation. When it is compared with the conventional precipitation process, the major advantage of this new clean technology is the elimination of sludge formation, the materials recovery and the reduction of solid waste.
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Nascimento, Januário da Rocha. "Gestion intégrée de l'eau et développement durable : le cas du Cap-Vert." Thesis, Normandie, 2017. http://www.theses.fr/2017NORMR066/document.

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La thèse aborde la problématique des usages de l'eau dans un archipel ouest-africain semi-aride, pauvre, vulnérable, où la question des ressources hydriques a toujours posé de graves problèmes, que cinq siècles de colonisation n'ont pas résolu. Dans un monde ouvert, interdépendant, où les questions de durabilité environnementale, de production agricole, de sécurité alimentaire et de lutte contre la pauvreté et pour le développement sont des enjeux majeurs pour la planète et ses habitants, la gestion intégrée des ressources en eau (GIRE) constitue une solution intéressante pour une économie cap-verdienne de l'eau répondant à ces défis.L'objectif de la thèse est de contribuer à la mise en œuvre de la GIRE sur le territoire de la République du Cap-Vert. Elle s'interroge sur le « modèle transféré » des barrages hydrauliques, avec l'exemple de celui de Poilão, dans la Ribeira Seca de l'île de Santiago, premier barrage construit au Cap-Vert, avec l'aide de la coopération chinoise. Elle examine le rôle et les effets de l'irrigation, les impacts de sa réalisation sur l'environnement local, ainsi que les problèmes socio-économiques entraînés par l'usage de l'eau dans le bassin versant de la Ribeira Seca. La thèse s'interroge sur la question de la gouvernance juridique, réglementaire et institutionnelle de l'eau au Cap-Vert, avec des comparaisons internationales. Enfin, elle propose un modèle de gestion de l'eau inspiré de l'approche GIRE
This thesis deals with the problem of water use in a poor, vulnerable, semi-arid West African archipelago where the issue of water resources has always posed major problems, problems which five centuries of colonization were unable to solve. In an open, interdependent world in which issues of environmental sustainability, agricultural production, food security and the fight against poverty and in favor of development are major challenges for the planet and its inhabitants, integrated water resources management (IWRM) constitutes an interesting solution for an economy of water that responds to these difficulties in the country.The objective of the thesis is to contribute to the implementation of integral water resource management in the territory of the Republic of Cabo Verde. It questions the “adopted model” of hydraulic dams, with the example of the Polião Dam in Ribeira Seca valley, on the island of Santiago, the first dam built in Cabo Verde, with the help of the People’s Republic of China. It examines the role and effects of irrigation, the impacts of engaging therein on the local environment, and the socio-economic problems caused by water usage in the Ribeira Seca watershed.The thesis also uses international comparisons to raise questions related to the legal, regulatory and institutional governance of water in Cabo Verde. Finally, it proposes a water management model inspired by the Integrated Water Resources Management approach
A presente tese aborda a questão do uso da água num arquipélago Oeste Africano semiárido, pobre, vulnerável, onde a questão dos recursos hídricos sempre levantou problemas graves, que cinco séculos de colonização não conseguiram resolver. Num mundo interdependente e aberto, onde as questões de sustentabilidade ambiental, a produção agrícola, a segurança alimentar e a luta contra a pobreza e pelo desenvolvimento são as questões fundamentais para (a preservação) do planeta e seus habitantes, a gestão integrada dos recursos hídricos (GIRH) é uma solução interessante para uma economia cabo-verdiana da água que responda a estes desafios.O objetivo desta tese é o de contribuir para a implementação da GIRH no território da República de Cabo Verde. A tese questiona sobre o "modelo transferido " de barragens, como por exemplo o da Barragem de Poilão na Ribeira Seca, na ilha de Santiago, a primeira barragem construída em Cabo Verde, com a ajuda da Cooperação chinesa. A tese examina o papel e os efeitos da irrigação, o impacto da sua implementação no ambiente local, assim como os problemas socioeconómicos causados pelo uso da água na bacia hidrográfica de Ribeira Seca.A tese interroga-se sobre a questão da governança jurídica, regulamentar e institucional da água em Cabo Verde, usando o direito comparado internacional. Finalmente, a tese oferece um modelo de gestão da água, com base na abordagem GIRH
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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.

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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.
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Atatoprak, Tuğba. "An integrated valorization of grape stalks for production of value-added compounds : case study of the production of sugars for second generation ethanol biorefeneries." Master's thesis, 2019. http://hdl.handle.net/10400.14/31733.

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A biomassa lignocelulósica é um dos principais recursos energéticos alternativos para lidar com os problemas de aquecimento global e depleção dos recursos de combustíveis fósseis. O bagaço de uva é um exemplo de biomassa lignocelulósica que é composta por celulose, hemicelulose, lignina e outros compostos (ceras, taninos, etc.).. Assim, a valorização integral da biomassa do bagaço de uva branca e vermelha foi realizada de forma a maximizar o seu valor económico, para a produção de bio-açúcares, lignina, compostos fenólicos e nanocelulose. O processo foi iniciado com o fracionamento dos extrativos por Soxlet no qual foi possível verificar que independentemente do processo de extração aplicado, a % de extrativos é consideravelmente maior em bagaço de uva branca do que em uva vermelha (ca. 20%). A remoção da lignina para aumentar a acessibilidade aos açúcares e digestibilidade foi realizada através de uma reação alcalina. As concentrações de lignina mais elevadas (ca. 50 %) foram obtidas utilizando 1 % NaOH durante 60 min. Posteriormente, de forma a obter açucares fermentáveis (bio-açúcares), foram testadas hidrólises ácida e enzimática (celluclast e β-glucosidase) no material deslignificado. A hidrólise com ácido sulfúrico a 3,5% permitiu obter uma concentração máxima de glicose (3,22 g/L), xilose (7,29 g/L) e arabinose (0,91 g/L). No entanto, as concentrações mais elevadas de açúcares foram obtidas por hidrólise enzimática do que por hidrólise ácida diluída, com valores de glicose com 6,06 g/L e xilose com 8,08 g/L. De forma, a validar a fermentabilidade dos açucares, estirpes de Pichia stipitis e Saccharomyces cerevisiae foram avaliadas, e caracterizadas quanto à produção de etanol em meios produzidos com açucares provenientes de ambas as hidrolises ácidas e enzimáticas. Pichia stipitis mostrou ser a estirpe de levedura com o melhor crescimento e produção de etanol nos meios de cultura preparados com os açucares derivados da hidrólise enzimática. Foram obtidos rendimentos de etanol de cerca de 0,22 g/L ao longo dos estudos de fermentação. Saccharomyces cerevisiae foi capaz de produzir etanol em ambos os tipos de meio produzidos com açúcares obtidos das hidrólises ácidas e enzimáticas, mas no geral o rendimento de etanol foi baixo ca. 0,14 g/L e 0,005 g/L respectivamente. Desta forma, foi possível concluir que a fermentação com os meios com açucares derivados da hidrolise enzimática e com a estirpe Pichia stipitis, foram as melhores condições encontradas para produzir etanol. Por fim, a parte cristalina da celulose que não sofreu hidrólise foi valorizada para produção de nanocelulose. Foi possível produzir nanocelulose com tamanhos de ca. 295nm e um potencial zeta de -37 mv. Pela primeira vez, a biomassa de bagaço de uva é reportada como uma fonte de nanocelulose, eventualmente potenciando o seu valor
Lignocellulosic biomass is one of the potential and key alternative energy resources to deal with the problems of global warming and depletion of fossil fuel resources. Grape stalk is an example of lignocellulosic biomass which is composed of cellulose, hemicellulose, lignin and other compounds (waxes, tannins, etc.). Thus, the integral recovery of the biomass of the white and red grape stalk was carried out in order to maximize its economic value for the production of bio sugars, lignin, phenolic compounds and nanocellulose. The process was started with the fractioning of the extractives by Soxhlet, in which it was possible to verify that, regardless of the extraction process applied, the% of extractives is considerably higher in white grape stalk than in red grape stalk (ca. 20 %). Removal of lignin to increase the accessibility to sugars and digestibility was performed by alkaline reaction. The highest lignin concentrations (ca. 50 %) were obtained using 1 % NaOH during 60 min. Subsequently, to obtain fermentable sugars (bio sugars), acid and enzymatic hydrolysis (celluclast and β-glucosidase) were tested in the delignified material. Hydrolysis with 3.5% sulfuric acid yielded a maximum concentration of glucose (3.22 g/L), xylose (7.29 g/L) and arabinose (0.91 g/L) during 60 min. However, higher concentrations of sugars were obtained by enzymatic hydrolysis than by dilute acid hydrolysis, with glucose values of 6.06 g/L and xylose with 8.08 g/L. In order to validate the fermentation of the sugars, strains of Pichia stipitis and Saccharomyces cerevisiae were evaluated, and characterized in the ethanol production in media produced with sugars from both acidic and enzymatic hydrolysis. Pichia stipitis showed to be the yeast strain with the best growth and ethanol production in the culture media prepared with sugar derived from enzymatic hydrolysis. Ethanol yields of about 0.22 g/L were obtained throughout the fermentation studies. Saccharomyces cerevisiae was able to produce ethanol from in both types of media produced with sugars from enzymatic and acid hydrolysis, but overall ethanol yields were lower ca. 0.14 g/L and 0.005 g/L respectively. In this way, it was possible to conclude that the fermentation with the media with sugars derived from enzymatic hydrolysis and with the strain Pichia stipitis were the best conditions found to produce ethanol. Finally, the crystalline part of the cellulose that did not undergo hydrolysis was valued to produce nanocellulose. It was possible to produce nanocellulose with sizes ca. 295 nm and zeta potential of -37 mv. For the first time, grape stalk biomass is reported as a source of nanocellulose, eventually boosting its value.
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Books on the topic "Integrated valorization"

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Integrated Wastewater Management and Valorization Using Algal Cultures. Elsevier, 2022. http://dx.doi.org/10.1016/c2020-0-00531-1.

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Demirer, Göksel N., and Sibel Uludag Demirer. Integrated Wastewater Management and Valorization Using Algal Cultures. Elsevier, 2022.

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Demirer, Göksel N., and Sibel Uludag Demirer. Integrated Wastewater Management and Valorization Using Algal Cultures. Elsevier, 2022.

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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.

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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)
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Oakley, Stewart. Integrated Wastewater Management for Health and Valorization: A Design Manual for Resource Challenged Cities. IWA Publishing, 2021.

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Oakley, Stewart. Integrated Wastewater Management for Health and Valorization: A Design Manual for Resource Challenged Cities. IWA Publishing, 2021.

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Book chapters on the topic "Integrated valorization"

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Blasio, Cataldo De, Gabriel Salierno, and Karhan Özdenkci. "Lignocellulosic Biomass for Biofuels Production, an Integrated Approach." In Enzymes in the Valorization of Waste, 23–49. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003187714-2.

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Rana, Juwel, Zannatul Ferdoush, Nasima Akter Mukta, Fouzia Akter, K. M. Mahdiuzzaman Sayed, Syeeda Shiraj-Um-Monira, Afzal Rahman, Mohammad Gulzarul Aziz, Tanmoy Roy Tusher, and Aniruddha Sarker. "Integrated Agro-waste Valorization and Biorefinery Approach: Prospects and Challenges." In Environmental Science and Engineering, 247–88. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-58025-3_12.

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Taiwo, A. E., T. F. Madzimbamuto, and T. V. Ojumu. "Development of an Integrated Process for the Production and Recovery of Some Selected Bioproducts From Lignocellulosic Materials." In Valorization of Biomass to Value-Added Commodities, 439–67. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-38032-8_21.

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Oppio, Alessandra, Ila Maltese, and Ilaria Mariotti. "Integrated Valorization of Cultural Heritage: A Case Study of the Cammino dei Monaci Route." In Integrated Evaluation for the Management of Contemporary Cities, 401–10. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78271-3_32.

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Zhao, Zhi-Min, Yan Chen, Xianzhi Meng, Siying Zhang, Jingya Wang, Zhi-Hua Liu, and Arthur J. Ragauskas. "Lignin Valorization in Biorefineries Through Integrated Fractionation, Advanced Characterization, and Fermentation Intensification Strategies." In Emerging Technologies for Biorefineries, Biofuels, and Value-Added Commodities, 337–62. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65584-6_14.

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Stamatelatou, Katerina, Paraskevi S. Blika, Ioanna Ntaikou, and Gerasimos Lyberatos. "Integrated Management Methods for the Treatment and/or Valorization of Olive Mill Wastes." In Novel Technologies in Food Science, 65–118. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-7880-6_4.

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Chaudhuri, Rayanee, Nageshwari Krishnamoorthy, and Balasubramanian Paramasivan. "Role of Microalgae in Integrated Wastewater Remediation and Valorization of Value-Added Compounds." In Sustainable Industrial Wastewater Treatment and Pollution Control, 55–83. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2560-5_4.

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Trigona, Simon Luca. "Archeologia subacquea in Liguria: un progetto integrato per la tutela e la valorizzazione." In Proceedings e report, 137–46. Florence: Firenze University Press, 2020. http://dx.doi.org/10.36253/978-88-5518-147-1.15.

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The Soprintendenza of Liguria has always given a particular attention to underwater archaeology and still today it pursues clear and specific aims: design, build, manage and increase competences and technologies that can be able to contribute to the regional and cultural development. The experience reached in Liguria by many years, leaded our activities of protection, research and valorization in order to develop a network of integrated archaeological sites and naval museums. On land this project provides two new museums in the cities of Albenga and Imperia that will be connected with a series of exhibitions and conferences
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Vilas-Boas, Ana A., Ricardo Gómez-García, Débora A. Campos, Marta Correia, and Manuela Pintado. "Integrated Biorefinery Strategy for Orange Juice By-products Valorization: A Sustainable Protocol to Obtain Bioactive Compounds." In Food Waste Conversion, 113–24. New York, NY: Springer US, 2023. http://dx.doi.org/10.1007/978-1-0716-3303-8_8.

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Kourmentza, Constantina, Eleni Koutra, Nikolaos Venetsaneas, and Michael Kornaros. "Integrated Biorefinery Approach for the Valorization of Olive Mill Waste Streams Towards Sustainable Biofuels and Bio-Based Products." In Microbial Applications Vol.1, 211–38. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52666-9_10.

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Conference papers on the topic "Integrated valorization"

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Yuliu, Zhifei, Yuqing Luo, and Marianthi Ierapetritou. "Design of Plastic Waste Chemical Recycling Process Considering Uncertainty." In Foundations of Computer-Aided Process Design, 229–35. Hamilton, Canada: PSE Press, 2024. http://dx.doi.org/10.69997/sct.126108.

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Chemical recycling of plastics is a promising technology to reduce carbon footprint and ease the pressure of waste treatment. Specifically, highly efficient conversion technologies for polyolefins will be the most effective solution to address the plastic waste crisis, given that polyolefins are the primary contributors to global plastic production. Significant challenges encountered by plastic waste valorization facilities include the uncertainty in the composition of the waste feedstock, process yield, and product price. These variabilities can lead to compromised performance or even render operations infeasible. To address these challenges, this work applied the robust optimization-based framework to design an integrated polyolefin chemical recycling plant. Data-driven surrogate model was built to capture the separation units� behavior and reduce the computational complexity of the optimization problem. It was found that when process yield and price uncertainties were considered, wax products became more favorable, and pyrolysis became the preferred reaction technology.
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Sempuga, Baraka C., and Selusiwe Ncube. "Biogas Valorization from a Process Synthesis Perspective: Heat and Work Integration to Maximize CO2 Conversion." In Foundations of Computer-Aided Process Design, 578–84. Hamilton, Canada: PSE Press, 2024. http://dx.doi.org/10.69997/sct.129660.

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Biogas is often considered as a source of renewable energy, for heat and power production. However, biogas has greater promise as a source of concentrated CO2 in addition to methane, making it a rich supply of carbon and hydrogen for the generation of fuel and chemicals. In this work, we use the concept of attainable region in the enthalpy-Gibbs free energy space to identify opportunities for effective biogas valorization that maximizes the conversion of CO2. The AR concept allows us to study a chemical process without knowing the exact reaction mechanism that the species in the process use. Deriving Material Balance equations that relate a reactive process's output species to its input species is sufficient to identify process limits and explore opportunities to optimize its performance in terms of material, energy, and work. The conversion of biogas to valuable products is currently done in two steps; the high temperature and endothermic reformer step, followed by the low temperature exothermic synthesis step. We demonstrate, using Aspen Simulation, that energy integration, both heat and work, between the two steps is crucial to achieving a substantial amount of CO2 conversion. We also show how a heat pump configuration can be utilized to integrate energy between the reformer and synthesis steps against the temperature gradient by integrating external renewable energy.
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Ribeiro, A., C. Vilarinho, J. Araújo, and J. Carvalho. "Development of an Integrated Process for Eggshell Valorization." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38836.

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The current global trend towards more stringent environmental standards, technical applicability and cost-effectiveness, became key factors in the selection of adsorbents. After demonstrating the performance of eggshell-derived adsorbent under a range of lab operating conditions, this work focused the adsorption efficiency of calcined eggshell powder (CEP), in the treatment of wastewaters from different industrial units. In order to do it, the removal of organic material, expressed as chemically oxygen demand (COD), was monitored in leachate wastewaters from sanitary landfill (LLWW) and in municipal residual wastewaters (MWW). Furthermore, the efficiency of alkaline metals removal, specifically from effluents of industrial unites from superficial treatments, was also assessed. A detailed study of the eggshell characteristics, before and after the adsorption process, was carried out, aiming at investigate the adsorption mechanism underlying the removal of different pollutants. Results demonstrate that adsorption of organic material and metals in the CEP, go around 84% of organic material removal in MWW and 81% in LLWW. Finally, a removal of 95% of aluminium (Al) from MWW, deriving from anodizing industrial plant, and a removal of 88% copper (Cu), 95% chromium (Cr) and 30% nickel (Ni) from effluents of superficial treatments produced in Ni/Cr plating plants, were also determined This suggests that CEP adsorbent is appropriated to wastewaters treatment with high contents of organic matter and heavy metals, from different aqueous systems or different industries. The application of this adsorbent in this methodology showed good cost-benefits ratio, proving that it can be an effective alternative to activated carbon. However, aiming the progress and sustainability of the whole eggshell valorisation, we are further optimizing, testing and developing new techniques and products to recover the organic fraction of the eggshell through the reclamation of several bioactive peptides derived from hydrolysis of different proteins that constitute these residues. These products are intended to be introduced in the food, cosmetic and pharmaceutical markets.
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Scazzoli, Davide, Giulia Bartezzaghi, Annalaura Silvestro, Maurizio Magarini, Marco Melacini, and Giacomo Verticale. "SIVEQ: An Integrated System for the Valorization of Surplus Food." In 2019 IEEE SmartWorld, Ubiquitous Intelligence & Computing, Advanced & Trusted Computing, Scalable Computing & Communications, Cloud & Big Data Computing, Internet of People and Smart City Innovation (SmartWorld/SCALCOM/UIC/ATC/CBDCom/IOP/SCI). IEEE, 2019. http://dx.doi.org/10.1109/smartworld-uic-atc-scalcom-iop-sci.2019.00334.

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Cunha, Carlos R., Antonio Mourao, Vitor Mendonca, and Ricardo Correia. "An ICT Integrated Model for Traceability, Promotion and Valorization of Regional Food Products." In 2022 17th Iberian Conference on Information Systems and Technologies (CISTI). IEEE, 2022. http://dx.doi.org/10.23919/cisti54924.2022.9820306.

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Ribeiro, A., C. Vilarinho, J. Araújo, and J. Carvalho. "Integrated Process for Textile Cotton Waste (TCW) Valorization: Waste-to-Energy and Wastewater Decontamination." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-66706.

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The increasing of world population, industrialization and global consuming, existing market products existed in the along with diversification of raw materials, are responsible for an exponential increase of wastes. This scenario represents loss of resources and ultimately causes air, soils and water pollution. Therefore, proper waste management is currently one of the major challenges faced by modern societies. Textile industries represents, in Portugal, almost 10% of total productive transforming sector and 19% of total employments in the sector composed by almost 7.000 companies. One of the main environmental problems of textile industries is the production of significant quantities of wastes from its different processing steps. According to the Portuguese Institute of Statistics (INE) these industries produce almost 500.000 tons of wastes each year, with the textile cotton waste (TCW) being the most expressive. It was estimated that 4.000 tons of TCW are produced each year in Portugal. In this work an integrated TCW valorisation procedure was evaluated, firstly by its thermal and energetic valorisation with slow pyrolysis followed by the utilization of biochar by-product, in lead and chromium synthetic wastewater decontamination. Pyrolysis experiments were conducted in a small scale rotating pyrolysis reactor with 0.1 m3 of total capacity. Results of pyrolysis experiments showed the formation of 0,241 m3 of biogas for each kilogram of TCW. Results also demonstrated that the biogas is mostly composed by hydrogen (22%), methane (14 %), carbon monoxide (20%) and carbon dioxide (12%), which represents a total high calorific value of 12.3 MJ/Nm3. Regarding biochar, results of elemental analysis demonstrated a high percentage of carbon driving its use as low cost adsorbent. Adsorption experiments were conducted with lead and chromium synthetic wastewaters (25, 50 and 100 mg L−1) in batch vessels with controlled pH. It was evaluated the behaviour of adsorption capacity and removal rate of each metal during 120 minutes of contact time using 5, 10 and 50 g L−1 of adsorbent dosage. Results indicated high affinity of adsorbent with each tested metal with 78% of removal rate in chromium and 95% in lead experiments. This suggests that biochar from TCW pyrolysis may be appropriated to wastewaters treatment, with high contents of heavy metals and it can be an effective alternative to activated carbon.
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Mangaroska, Viktorija, Kosta Mangaroski, and Liljana Mangaroska. "Smart buildings as architectural international technological concept." In Zbornik radova sa Nacionalne konferencije sa međunarodnim učešćem – Zelena Gradnja 2024. University of Niš - Faculty of Civil Engineering and Architecture, 2024. http://dx.doi.org/10.5937/greenb24023m.

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Smart buildings as international multidisciplinary technological concept integrate: building structure, systems, services and management in order to create environmentally-friendly, cost-effective and productive environment for the building's users. It provides responsive, effective and supportive environment in the following areas: energy efficiency, smart platforms, environmental impacts, security and risk management and space utilization management. The methodology of this scientific paper includes international case studies of smart buildings analysis, valorization, integration and adaptation in the context of social and technological development. The objectives of this scientific paper is to explore and define the international smart innovative technologies by analysis of the sustainability, energy efficiency operational efficiency and cost reduction by real-time monitoring and data-driven decision that optimizes resources, flexibility and adaptability, connectivity by integrated systems, devices and sensors, security and risk mitigation, advanced security systems, according to the smart buildings requirements.
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Castro, Alexandra, Cândida Vilarinho, Jorge Araújo, and Joana Carvalho. "Recovery of Paper Fibers From TetraPak® Packaging: Material and Energetic Valorization of the Remaining Fraction." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38880.

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In this study, a methodology was developed for the treatment/valorization of all the constituent fractions of TetraPak ®, proposing pyrolysis technology for the recycling of plastic and aluminum fraction, resulting in the recovery process of the paper fibers. In percentage these three elements are distributed approximately as follows: 70% of cardboard (kraft paper), 25% of low-density polyethylene (LDPE) and 5% of aluminum foil [1, 2, 3, 4]. It was developed an integrated and innovative methodology that starts with the recovery of the paper fibers, which must reintegrate the production cycle of the packaging company. Followed by the valorization of the remaining fraction, this fraction consists in plastic and aluminum, and is valorized through a pyrolysis process. The pyrolysis process is an irreversible chemical modification of compounds by the action of heat and in the absence of oxygen. This technology are used for energy recovery, which causes thermal degradation of the compounds in anoxic environment, and is therefore considered an environmentally friendly technology and it is considered one of the alternative routes for treatment of waste TetraPak ® packaging [4]. The pyrolysis tests were carried out in laboratory reactor at different temperatures (between 300 and 500°C). At the end of this process the aluminum was recovered and it was produced a synthesis gas with added value. This produced gas was constituted by CO, H2, CO2 e CH4 with maximum values recorded of 5000, 3200 e 7.5 ppm e 40%, respectively. The laboratory test were confirmed by the analysis of the thermal behavior by DTA/TGA and it was confirmed that the temperature of 500°C is the most indicated for energetic valorization of the aluminum, paper and plastic fraction.
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Moglia, A., L. Bracco, M. Chiolo, and M. Buffagni. "E&P Operations in Water Stressed Areas: An Approach to the Identification, Selection and Implementation of Initiatives for a Sustainable Water Management, Withdrawal Reduction and Water Valorization." In SPE International Health, Safety, Environment and Sustainability Conference and Exhibition. SPE, 2024. http://dx.doi.org/10.2118/220301-ms.

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Water is one of earth's most critical resources, and water scarcity represents an increasing problem worldwide. Demographic growth and economic development are putting unprecedented pressure on water resources, especially in arid regions. Water is crucial for many sectors, and it is also fundamental to meet personal and household needs, for energy and industrial production, to maintain important water-dependent ecosystems and ecosystem services. Water plays a key role in all the phases of the Oil and Gas business, because of the large amounts of this resource that should be managed, both with respect to withdrawals and to disposal. For these reasons, it is essential to adopt a well-defined and sound approach in order to protect the water resource, also considering that often Oil and Gas activities take place in arid regions. All these aspects require an integrated and inclusive approach, able to build resilience against worsening factors.
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Enache, Roxana, Gabriel Gorghiu, and Anamaria aurelia Petrescu. "EDUCATIONAL VALENCES OF THE INTERNET IN DIDACTIC ACTIVITIES." In eLSE 2018. Carol I National Defence University Publishing House, 2018. http://dx.doi.org/10.12753/2066-026x-18-147.

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When correlating the observations and the results of the activities carried out during the teaching career, it is noticed that, at the social level, the Internet represents a real challenge for the educational use, implying teacher’s competences to transform the power of this massive resource into a learning power, developing modern and effective educational scenarios related to the needs and demands of the actual society. The educational potential of the Internet cannot be exploited without the identification of epistemological and praxiological fundamentals, that underlie on the basis of valorization of this resource. Thus, it appears as a first necessity, to address a series of research in the educational practice, concerning how the Internet can be used to produce real added values towards a qualitative education. As we have seen from the analysis of the curriculum documents, as well as from the analysis of several lessons proposed by the teachers, the educational potential of the Internet is not just about identifying and transferring information, but it can be extended to the formation of a diverse set of skills and to the development of attitudes, behaviors and values. A challenge to which the educational actors - teachers, students or even parents - need to reflect, is represented by the way in which new information and communication technologies are integrated and involved in education, considering the Internet an area with a huge potential, as resource. In this respect, in order to stimulate the use of new technology in education, there is a need for designing holistic, systematic, coherent and consistent approaches.
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