Relevant bibliographies by topics / Waste valorization / Dissertations / Theses
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Dissertations / Theses on the topic 'Waste valorization'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

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1

Duval, Alexandra M. "Valorization of Carrot Processing Waste." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2155.

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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.
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Glińska, Katarzyna. "Extraction and valorization of cellulose from municipal and industrial waste biomass." Doctoral thesis, Universitat Rovira i Virgili, 2020. http://hdl.handle.net/10803/669816.

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La cel·lulosa és el polímer orgànic més abundant del planeta. A causa de les seves propietats, com la biocompatibilitat, la biodegradabilitat, l'estabilitat tèrmica i química, s'ha utilitzat en moltes aplicacions. La cel·lulosa es pot obtenir a partir de residus de biomassa sense exposar els subministraments d'aliments i pinsos, els boscos i la biodiversitat al món. La biomassa es compon de fibres de cel·lulosa incrustades en una matriu sòlida de lignina i hemicel·luloses. Per alliberar-los s’han de realitzar processos de pretractament de biomassa. Durant els darrers anys ha cridat una gran at
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PIETRICOLA, GIUSEPPE. "Waste valorization trough dehydrogenase enzymes immobilized on low-cost inorganic supports." Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2969232.

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4

Carmo, Inês Miguel Troles Duarte do. "Food waste valorization through the production of polyhydroxyalkanoates by mixed microbial cultures." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/10454.

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Dissertação para obtenção do Grau de Mestre em Engenharia Química e Bioquímica<br>Polyhydroxyalkanoates (PHAs) are polyesters of hydroxyl fatty acids, which are accumulated in microbial cells as carbon/energy reserves. PHAs are bio-based and biodegradable and display a wide range of thermoplastic properties, being a promising alternative to conventional plastics. Presently, industrial PHA production was primarily based on pure microbial cultures. Although this process has high PHA production efficiency, it presents high costs associated with the use of chemically-defined feedstocks, and to
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Ephraim, Augustina. "Valorization of wood and plastic waste by pyro-gasification and syngas cleaning." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2016. http://www.theses.fr/2016EMAC0019/document.

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Les déchets de bois et de plastiques sont des ressources prometteuses pour la production du gaz de synthèse (syngaz) par la pyro-gazéification grâce à leurs disponibilités et leurs caractéristiques énergétiques. Cependant, le syngaz issu de ces déchets peut contenir des teneurs élevées en chlorure d’hydrogène (HCl) qui est corrosif et toxique et qui doit donc être éliminé. Premièrement, les expériences de pyrolyse des mélanges de bois de peuplier et de plastiques ont mis en évidence l’influence des plastiques sur les produits obtenus. En effet, le HDPE et PS augmentent resp
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6

PANZA, NICOLA. "TOWARDS SUSTAINABLE CATALYSIS: DESIGN OF EARTH-ABUNDANT METAL COMPLEXES FOR WASTE VALORIZATION." Doctoral thesis, Università degli Studi di Milano, 2022. https://hdl.handle.net/2434/950616.

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The thesis describes the work done during three years of PhD regarding sustainable metodologies in homogeneous catalysis. First chapter: selective oxidation of alcohols using iron(III) pyclen ligand complexes as catalyst and hydrogen peroxide as oxidant. Application and mechanistic insights. Structural and spectroscopical investigation of oxo-bridged iron complexes by XRD and Raman spectroscopy. Second chapter: Cycloaddition of carbon dioxide and epoxides with pyclen metal complexes (zinc and iron) as catalysts. Developement and optimization of the reaction without the addition of external
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7

Zhao, Jingjing. "Valorization and reuse of waste modified biomass. Heavy metal biosorption removal from aqueous solutions." Doctoral thesis, Universitat Autònoma de Barcelona, 2019. http://hdl.handle.net/10803/667800.

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Les aigües contaminades per metalls pesants han rebut una atenció creixent a causa de la seva alta toxicitat, persistència en els sediments i acumulació biològica dels metalls pesants, sent una amenaça potencial per als sers vius, fins i tot a baixa concentració. Les tècniques tradicionals per eliminar metalls pesants són processos contaminants i de cost elevat, fet que limita les seves aplicacions. Així, és urgent trobar un mètode de baix cost, de bona eficiència i eco-friendly per fer front a aquest tipus de problemes. La biosorció pot ser una opció prometedora en aquest cas gràcies a mostr
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8

Cosovanu, Diana Gabriela. "Towards waste valorization: Recovery of valuable compounds from animal by-products and opportunities of application." Doctoral thesis, Universitat de Lleida, 2021. http://hdl.handle.net/10803/673623.

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La indústria càrnia genera enormes quantitats de deixalles, que s'han de tractar i gestionar adequadament per evitar problemes ambientals i de salut. El reciclatge de residus i subproductes animals en productes de valor afegit podria ajudar a revertir aquest problema. Per tant, diversos enfocaments han estat adaptats per la ciència i la tecnologia, acoblant-los amb els coneixements del mercat, la legislació i els consumidors per a la valorització amb èxit d'aquests residus en el marc de l'Economia Circular. Aquesta Tesi Doctoral s'enfoca en un residu subestimat i sense explotar produït durant
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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
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10

Tesini, Federica <1988&gt. "Valorization of Food, Food Waste and By-Products by Means of Sensory Evaluation and Volatile Compounds Analysis." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amsdottorato.unibo.it/7800/1/Federica%20tesini_thesis.pdf.

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The detection of the aromatic profile of a food is relevant for the comprehension and the definition of the volatile fraction of product. Additionally, the identification of the molecules responsible for the sensory, specifically olfactory (direct and indirect), food perception is relevant to define its acceptability and, in some cases (e.g. olive oil), its quality. Combining data obtained from sensory evaluation and volatile compounds analysis is relevant for the definition of a product fingerprint, useful to describe the product itself but also to highlight its strengths and to emphasize man
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Maccaferri, Cristian. "Valorization and recycling of raw materials through a waste management system, case of study Koinonia Community, Lusaka, Zambia." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13571/.

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This thesis presents the implementation and the optimization of a waste management system (WMS) in the Koinonia community (that is sited in the Chilanga district near Lusaka), showing the challenges that must be faced, implementing a WMS in a developing country. In the first part of the thesis it will be contextualized the waste management in the Zambian economy showing how a diversification involving the it could fit with the needs of the Nation. In the second part it will be treated the waste management hierarchy through the illustration of some European policies (like Circular Economy Packa
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FRATERRIGO, GAROFALO SILVIA. "Valorization of rice and canned tuna processing wastes: a focus on green extraction techniques." Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2960759.

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Marçal, Catarina Fernandes Bernardo. "Gestão integrada de resíduos do sector vinícola e análise do ciclo de vida do produto. Fundação Eugénio de Almeida, Herdade dos Pinheiros." Master's thesis, ISA/UL, 2014. http://hdl.handle.net/10400.5/8296.

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Mestrado em Engenharia do Ambiente - Instituto Superior de Agronomia<br>The wine sector annually produces about seven million tons of residues and by-products such as grape marc, lees, seeds and the stalk. If these materials are mismanaged they can have a strong environmental impact. Moreover, some of these materials may have great potential through their physical and chemical characteristics, which may be used for others purposes. A strategy plan was presented, containing management alternatives, for each residue produced during one year campaign of wine production. To reach these goals we pe
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14

Arespacochaga, Santiago Nicolás de. "Sewage biogas energy valorization via solid oxide fuel cells." Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/345237.

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A more sustainable and secure energy supply is required for the forthcoming generations; where the actual dependence on the fossil fuel reserves should be replaced by self-sufficiency and use of renewable energy resources. Conventional sewage treatment is an energy consuming process, or more specifically, an electricity consuming process. Notwithstanding, energy on Waste Water Treatment Plants is not only considered in terms of consumption reduction, but also in terms of production of renewable energy in form of biogas. Today, achieving energy self-sufficiency is limited by the low electrical
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Guaya, Caraguay Diana Elizabeth. "Evaluation of phosphate and ammonium removal and valorization from urban waste waters by impregnated metal hydrated oxides inorganic natural zeolites." Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/461091.

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Phosphate and ammonium removal from waste water by adsorption using inorganic natural sorbents has been identified as a promising technology. The advantages of this methodology are associated with its availability and effective low cost. Some natural and synthetic zeolite materials have been used for the individual phosphate and ammonium removal from aqueous solutions. The zeolites revealed high affinity for ammonium removal. However, some modifications stages are indispensable to enhance their oxyanionic sorption capacity to achieve high phosphate removal ratios. So, it is highly desirable t
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Legnini, Martina. "Agro-industrial waste valorization by mixed microbial consortia: production of hexanoic acid and biomethane-rich biogas through anaerobic fermentation processes." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/24164/.

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The present work aims at the evaluation of the possibility to use different organic wastes, as substrates for the production of hexanoic acid and methane, through anaerobic fermentation process. The substrates that will be examined are red and white grape pomaces, for the production of volatile fatty acids, and different agro-industrial waste, coming from insects breeding, for the production of biomethane. The first goal is the establishment of an appropriate culture medium, for the acidogenesis and chain elongation processes, in order to achieve a high concentration of hexanoic acid in the
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Santos, Ana Paula Billar dos. "Caracterização e aproveitamento do resíduo de pescado junto aos principais pontos de comercialização da Baixada Santista - SP." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-21022017-145040/.

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A atual destinação dos resíduos de pescado é uma problemática real que tem impactado o cenário ambiental, sobretudo em regiões litorâneas. Devido a sua elevada carga orgânica e inorgânica, os resíduos de pescado possuem acelerada atividade de deterioração e contribuem para a formação de compostos químicos, os quais podem contaminar e prejudicar substancialmente a qualidade do ar, do solo e dos corpos hídricos. A disposição inadequada dos resíduos de pescado relaciona-se direta e indiretamente com a ocorrência de enfermidades, sendo, portanto, uma relevante questão de saúde pública. As principa
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18

Lucertini, Mattia. "Implementing circular economy: evaluation of implications related to an innovative waste-to-resource management scenario." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amslaurea.unibo.it/25458/.

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Circular Economy (CE) is gaining attention among practitioners and institutions for its potential to increase the eco-performance of production and consumption systems and as a means to reach sustainable development. It intends to recover and valorize waste and residue adding value to these materials while keeping them within society. However, so far, a comprehensive and exhaustive methodology for measuring CE transition and progress towards the achievement of sustainability principles is still lacking. This work presents a preliminary investigation of the consequences of CE implementation in
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Santos, Calado Marianito Da Ascensao Guilherme Antonio. "Development of inorganic polymers for near-zero energy dwellings." Doctoral thesis, Università degli studi di Padova, 2020. http://hdl.handle.net/11577/3424884.

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Alkali activation has been emerging as a sustainable technology to produce innovative construction materials. Alkali-activated materials have been extensively investigated, but different levels of scientific understanding and industrial implementation can be found among several subgroups of such materials. The most widely examined alkali-activated materials are commonly known as geopolymers. The scientific knowledge of their reaction mechanisms and structures is mature, and their market implementation fairly consolidated. Conversely, inorganic polymers (IP) is a different subgroup of alkali-
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20

Salazar, Ruiz Velasco Maria Fernanda. "Food Waste Management in a Circular Economy Perspective : A case study of Swedish juice plant Loviseberg presseri AB." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-260477.

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One third of all the food produced for human consumption is being wasted all around the world. The recovery and optimum use of this food waste is vital to support the growing population and food demand. The main objective of this research is to identify the optimum use of organic waste, using a circular economy approach, to generate recommendations that help industries in the food sector to reduce and valorize waste. A case study for food waste management alternative selection with the Swedish juice plant Loviseberg presseri AB is presented. This study furthermore proposes a detailed operation
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Paillet, Florian. "Optimisation d’un procédé à deux étapes pour la production d’un mélange hydrogène/méthane (biohythane) à partir de la fraction fermentescible des ordures ménagères." Thesis, Montpellier, SupAgro, 2017. http://www.theses.fr/2017NSAM0027/document.

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La valorisation de la fraction organique des déchets ménagers par un procédé biologique à deux étapes permet la production d’un mélange H2/CH4 comprenant 5 à 20% d’hydrogène appelé plus communément biohythaneLa première étape consiste en un réacteur de fermentation sombre (hydolyse/acidogénèse) où une partie de la matière organique est dégradée en H2 et en molécules simples (acides gras volatils, sucres simples, éthanol...). Les déchets prédigérés provenant du réacteur de fermentation peuvent ensuite être utilisés dans un réacteur de méthanisation afin de finaliser la dégradation de la matière
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Parsa, Ramin. "Cloud Manufacturing and Sustainability." Thesis, Jönköping University, JTH, Produktionsutveckling, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-53947.

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Collaboration is a pervasive element in an organization's departments, various suppliers, and business associates in an advanced manufacturing industry. Cloud Manufacturing (CMfg) is a new service-oriented business paradigm capable of generating this sought-after collaboration. Companies are expected to accomplish cost reductions, maintain quality, satisfy the market, and reduce environmental impacts while growing in sophistication and integration. Implementing the idea of sharing resources and capabilities will ultimately result in cost reduction, boost productivity,and more efficient consump
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Calderón, Roca Blanca. "Application of iron-based nanostructures to contaminant remediation." Doctoral thesis, Universidad de Alicante, 2017. http://hdl.handle.net/10045/69809.

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This thesis focuses on the synthesis and applications of nanoscale zero valent iron (nZVI) in the environmental remediation of contaminants. The polyvalent characteristics of this nanomaterial are evaluated in this work with the study of its application in a wide range of contaminants: heavy metals and pesticides in water medium, and malodorous sulfur compounds present in air streams. Moreover, a novel method of synthesis of encapsulated nZVI from a waste material is presented, which meets the principles of green chemistry and at the same time represents a low-cost method of obtaining nZVI wit
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François-Lopez, Émilie. "Production de biohydrogène par fermentation obscure : potentiel de différentes biomasses et variabilité microbienne." Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAF040/document.

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Dans un contexte de transition énergétique, ce travail de recherche s’inscrit dans la dynamiqued’explorer la potentialité de nouvelles biomasses pour la production d’un vecteur énergétique propre,l’hydrogène (H2). Au cours de cette thèse, un procédé de production d’H2 par fermentation endogèneet sans dépense énergétique supplémentaire, a été élaboré à partir de biomasses viticoles, etl’influence de paramètres opératoires a été testée. Enfin, le type de biomasses influe sur laproduction d’H2, non seulement par sa composition biochimique, mais aussi par leur microfloreendogène qui oriente le mét
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Fedotov, Alexey. "Conversion of methane and carbon dioxide on porous catalytic membranes." Thesis, Vandoeuvre-les-Nancy, INPL, 2009. http://www.theses.fr/2009INPL099N/document.

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L’étude concerne un nouveau procédé de reformage du gaz naturel en gaz de synthèse par le dioxyde de carbone (RSM), en vue de l'utilisation rationnelle des déchets carbonés industriels pour la production d'hydrocarbures et d'hydrogène. Cette méthode utilise des systèmes à membranes catalytiques inorganiques (SMC) qui favorisent des réactions catalytiques hétérogènes en phase gazeuse dans des micro-canaux céramiques. La surface active des catalyseurs formés à l'intérieur des canaux est faible en termes de superficie, mais elle est caractérisée par une valeur élevée du facteur Surface/Volume du
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Bangoura, Marie Rose. "Gestion des déchets solides ménagers et ségrégation socio-spatiale dans la ville de Conakry." Thesis, Toulouse 2, 2017. http://www.theses.fr/2017TOU20038/document.

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Les déchets ménagers sont devenus un problème crucial qui inquiète de plus en plus municipalité et population à Conakry. Car l’actuel mode de gestion des déchets est marqué par d’importants dysfonctionnements. Le taux de collecte qui était de 70 % en 1997 atteint à peine aujourd’hui les 20 % alors que la quantité de déchets produits continue d’augmenter (600 t en 1997 à plus 1500 t en 2015). Le caractère inopérant des structures de collecte et d’évacuation des déchets ménagers favorise l’implantation des dépotoirs sauvages incontrôlés partout dans la ville. Les immondices non ramassés, les eau
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Kple, Melhyas. "Étude des voies de valorisation des déchets ménagers au Bénin : cas de la ville d’Abomey-Calavi." Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0288/document.

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Dans l’ensemble de l’Afrique de l’Ouest, la gestion des déchets est un problème prioritaire principalement pour les villes qui accueillent une population toujours plus nombreuse. C’est le cas de la ville d’Abomey-Calavi, qui n’a pas un système organisé de gestion des déchets. Pour permettre une gestion optimisée des déchets, une politique globale basée sur des éléments tangibles et démontrés doit être mise en oeuvre. Il est ainsi primordial d’analyser le problème et ses caractéristiques, de tester différentes solutions envisagées, et d’optimiser les systèmes viables. L’objectif de cette étude
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Cavallo, Martina. "Valorizzazione della frazione organica dei rifiuti solidi urbani tramite liquefazione idrotermale e digestione anaerobica: monitoraggio del processo biologico e caratterizzazione chimica dei composti organici idrosolubili." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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Questo elaborato si basa su uno studio effettuato in collaborazione con l’istituto di ricerca ENI-Donegani durante il quale si è esaminata la possibilità di trattare attraverso un processo biologico accoppiato, anaerobico-aerobico, le acque derivanti dal trattamento idrotermale (HTL, hydrothermal liquefaction) della frazione organica del rifiuto solido urbano (FORSU). Lo studio si è incentrato sulla resa del processo in termini di biogas prodotto e sull’ identificazione dei composti presenti all’interno del refluo da trattare. Per il monitoraggio del processo biologico sono state condotte le
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Farnocchia, Giulia, and Giulia Farnocchia. "Evaluating the PHA storage capacity and the impacts of growth conditions on Chloroflexus aurantiacus, a green non-sulphur phototrophic bacterium." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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The CO2 global average concentration has grown at an alarming rate in the last decade reaching 413 ppm in July 2021, positioning as the primary driver of climate change. The production of the major plastic materials globally produced still rely on fossil fuels, contributing to the release of CO2 in the atmosphere. It is in this contest, that bioplastic industry, particularly PHAs production brings many ecological advantages. PHAs are microbial synthetized polyesters polymers which are both biobased and biodegradable. They are versatile materials, whose properties, hence their applications, dep
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Chkir, Mouna. "Synthèse de gels phosphocalciques issus de déchets industriels carbonatés : caractérisation physico-chimique, thermique et rhéologique." Electronic Thesis or Diss., Toulouse, INPT, 2011. http://www.theses.fr/2011INPT0039.

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Les travaux présentés ont pour objectif la valorisation de déchets industriels riches en carbonates pour la préparation de gels phosphocalciques. Ces gels sont destinés à des applications environnementales. Leur synthèse est basée sur la réaction des carbonates de calcium avec une solution de phosphates solubles à température ambiante et à pression atmosphérique. Le procédé élaboré à l’échelle laboratoire consiste à additionner les réactifs en variant les paramètres expérimentaux tels que le Ca/P, la température et la dilution. Cette méthode a été utilisée pour la synthèse de gels à partir de
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MANISCALCO, Marco. "Slow Pyrolysis come metodo per la valorizzazione di rifiuti e biomassa residuale." Doctoral thesis, Università degli Studi di Palermo, 2022. https://hdl.handle.net/10447/554198.

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Chkir, Mouna. "Synthèse de gels phosphocalciques issus de déchets industriels carbonatés : caractérisation physico-chimique, thermique et rhéologique." Thesis, Toulouse, INPT, 2011. http://www.theses.fr/2010INPT0039/document.

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Les travaux présentés ont pour objectif la valorisation de déchets industriels riches en carbonates pour la préparation de gels phosphocalciques. Ces gels sont destinés à des applications environnementales. Leur synthèse est basée sur la réaction des carbonates de calcium avec une solution de phosphates solubles à température ambiante et à pression atmosphérique. Le procédé élaboré à l’échelle laboratoire consiste à additionner les réactifs en variant les paramètres expérimentaux tels que le Ca/P, la température et la dilution. Cette méthode a été utilisée pour la synthèse de gels à partir de
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Kučera, Dan. "Studium metabolismu bakteriálních buněk a vlivu stresu na biosyntézu PHA." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-408063.

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This thesis deals with the study of polyhydroxyalkanoate biosynthesis as a microbial product with the potential to replace current conventional plastics made from petroleum. The dissertation thesis is elaborated in the form of a discussed set of already published publications, which are then part of the thesis in the form of appendices. The work builds on relatively extensive knowledge in the field of polyhydroxyalkanoate production and brings new facts and possible strategies. Various possibilities of analysis of polyhydroxyalkanoates using modern methods were tested in this work, which bring
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Ferreira, Fábio Miguel Mendes. "Valorization of pharmaceutical wastes using ionic liquids." Master's thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/13789.

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Mestrado em Biotecnologia - Biotecnologia Industrial e Ambiental<br>The main objective of the present work is the application of aqueous biphasic systems (ABS) with ionic liquids (ILs) in the extraction of pharmaceutical wastes. Nowadays, after their expiration date time recovered medicine waste are incinerated, destroying most of the valuable compounds present, with only a minor thermic valorisation. Therefore the development of new processes that allow this wastes valorization is crucial to create a more environmentally friendly process and the use of wastes as a source of raw materials. T
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Zagni, Gioia. "Upcycling food industry by-products. Bringing the circular economy to the attention of decision makers." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/24405/.

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Food wastage represents a massive issue in today's society. It impacts the environment (e.g., climate change, resources depletion, biodiversity loss), society (e.g. food security), and the global economy. All the stakeholders could change systemically to transition towards the circular economy. Corporates must involve leadership, employees, suppliers, and consumers to build a more efficient and resilient system where waste and by-products generation is limited. The unavoidable waste could be valorized to new raw materials to reduce the environmental impact of their disposal. This thesis focuse
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Oliveira, Nunes Andréa. "Composites renforcés à fibres de carbone : récupération des fibres par vapo-thermolyse, optimisation du procédé." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2015. http://www.theses.fr/2015EMAC0006/document.

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La demande mondiale en fibre de carbone est estimée à 89 000 tonnes en 2020. Une quantité croissante de déchets de composites renforcés à fibres de carbone (PRFC) est donc attendue. Le recyclage des fibres de carbone, produits de forte valeur ajoutée, contenues dans les composites, présente des avantages économiques et environnementaux qui sont aujourd'hui la force motrice pour le développement des filières de recyclage. L'objectif est de récupérer les fibres de carbone afin de pouvoir envisager un réemploi dans d'autres applications. Leurs propriétés mécaniques et structurales doivent alors ê
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Modolo, Regina Célia Espinosa. "Valorization of solid wastes from cellulose and paper industry." Doctoral thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/13961.

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Doutoramento em Ciências e Engenharia do Ambiente<br>This thesis reports in detail studies of industrial solid wastes valorization as alternative raw materials. All tested wastes are classified as non-hazardous and are generated in the pulp and paper process, including primary sludge, dregs, grits, lime mud and bottom ash (this generated in a process that occurs in parallel to the production of cellulose, whose aim is the production of energy to supply the plant through the combustion of forest biomass in fluidized bed). A detailed general characterization was performed at each waste an
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Prévot, Flavie. "Valorization of vegetables wastes for the poly(lactic acid) bioproduction." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAE008/document.

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Cette thèse s’articule autour de la valorisation de la biomasse lignocellulosique pour la production d’un polymère biosourcé, le poly(acide lactique) PLA. Lors d’une première étude, deux prétraitements de la biomasse lignocellulosique ont été réalisés pour libérer les sucres fermentescibles. Puis plusieurs stratégies de fermentations ont été mises en place et un criblage microorganisme / biomasse a été réalisé en vue de sélectionner la meilleure stratégie de fermentation et le meilleur couple biomasse / microorganisme pour la production d’acide lactique. Les bactéries lactiques, Lactobacillus
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Massari, Daniele <1992&gt. "Production of carbon dots for the valorization of brewing wastes." Master's Degree Thesis, Università Ca' Foscari Venezia, 2020. http://hdl.handle.net/10579/17958.

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The brewing industry produces large amounts of solid organic wastes, of which spent grains, surplus yeast and spent hops represent the majority. For years, despite the low-cost and great availability, their reuse has been scarce and limited to animal feed. More recently, alternative valorisation strategies to transform the brewing residues into value-added products have been investigated. Following this approach, in this study the wastes of two high-fermentation beers, i.e. IPA and stout from local breweries, were collected and used to generate N-doped carbon dots (CDs) by one-step hydrotherma
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40

Ngambi, Jules Raymond. "Déchets solides ménagers de la ville de Yaoundé (Cameroun) : de la gestion linéaire vers une économie circulaire." Thesis, Le Mans, 2015. http://www.theses.fr/2015LEMA3001/document.

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Pour comprendre la gestion des déchets à Yaoundé, deux angles d’analyse ont été abordés. Il s’agit de la gestion linéaire basée sur les stratégies de collecte, de transport, de traitement, de mise en décharge des déchets et de la transition vers une économie circulaire. Le chevauchement des pouvoirs, les insuffisances organisationnelles, techniques et managériales à Yaoundé sont à l’origine d’inégalités environnementales et d’accès au service public de déchet. Ceci a engendré les risques et nuisances comme la prolifération des dépôts sauvages, les incinérations à ciel ouvert, les inondations e
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Seifi, Sahar. "Conception d'éco-liants et/ou éco-matériaux à partir de cendres volantes papetières et laitier moulu." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMC287/document.

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L'objet des travaux réalisés dans cette thèse concerne la mise en oeuvre d'un éco-liant à base de co-produits industriels : une cendre volante papetière et un laitier moulu, pour la fabrication de mortiers secs. Cet éco-liant a été élaboré pour remplacer partiellement le ciment comme constituant de matériaux traditionnels d'une part, et recycler en grande quantité l'un des deux déchets industriels, la cendre volante papetière tout en intégrant les notions d'économie circulaire et d'éco-conception d'autre part. La littérature fait état de nombreux travaux sur les différents types de cendres et
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Ponsot, Inès. "Glasses and Glass-Ceramic Components from Inorganic Waste and Novel Processing." Doctoral thesis, Università degli studi di Padova, 2015. http://hdl.handle.net/11577/3424636.

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Thanks to European environmental rules and regulations establishment, waste recycling has become a more and more relevant problematic. For manufacturing plants, especially those producing hazardous wastes, expenses linked to waste production have drastically increased over the last decades. In the proposed work, various hazardous and non-hazardous wastes, among: soda-lime and borosilicate glass cullet, cathode ray tubes glass, exhausted lime from fume abatement systems residues, sludge and slags from ferrous and non-ferrous metallurgy, and pre-stabilized municipal solid waste incinerators ashe
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AVRAMIDOU, KALLIOPI. "BIOCATALYSIS FOR BIOMASS VALORIZATION: PROTEIN HYDROLYSATES AND SUGAR ESTERS FROM AGRI-FOOD WASTES." Doctoral thesis, Università degli Studi di Milano, 2020. http://hdl.handle.net/2434/704558.

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During this doctorate work, two research topics have been studied within the aim of valorization of waste and by-products derived from the agri-food industry using a biotechnological approach for the production of high-value chemicals. The first topic was the preparation and characterization of hydrolysates from rice bran protein. Rice bran (RB) is a waste derived from the milling process of the rice and is a rich source of highly nutritional proteins, lipids, carbohydrates, and a number of micronutrients (e.g. vitamins, minerals, antioxidants, and phytosterols). The sequential treatment of RB
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Martinez, Gonzalo Agustin <1985&gt. "Development of Biorefinery Schemes for the Valorization of Agro-Industrial Wastes: Production of Polyhydroxyalkanoates." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7642/1/PhD_Thesis_Gonzalo_Martinez_2016.pdf.

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Aiming to reduce the cost of production of polyhydroxyalkanoates (PHAs), it was verified the use of two agro-industrial wastes as alternatives carbon sources for the production of: A- poly(hydroxybutyrate-co-hydroxyvalerate), from olive mill wastewater (2012 campaign; 60% dephenolised). It was possible to used up to 25% v/v in the culture media due to the presence of polyphenolic inhibitors in the matrix. B- polyhydroxybutyrate (PHB) with OMW belonging to 2013 (>70% dephenolised): the culture medium could contain 100% v/v without causing inhibition. An integrated biorefinery scheme was defin
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Martinez, Gonzalo Agustin <1985&gt. "Development of Biorefinery Schemes for the Valorization of Agro-Industrial Wastes: Production of Polyhydroxyalkanoates." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7642/.

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Aiming to reduce the cost of production of polyhydroxyalkanoates (PHAs), it was verified the use of two agro-industrial wastes as alternatives carbon sources for the production of: A- poly(hydroxybutyrate-co-hydroxyvalerate), from olive mill wastewater (2012 campaign; 60% dephenolised). It was possible to used up to 25% v/v in the culture media due to the presence of polyphenolic inhibitors in the matrix. B- polyhydroxybutyrate (PHB) with OMW belonging to 2013 (>70% dephenolised): the culture medium could contain 100% v/v without causing inhibition. An integrated biorefinery scheme was defin
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46

Lopez, Ferber Nicolas. "Validation expérimentale d'un système de stockage thermocline air/céramique à échelle pilote - développement d'un matériau céramique issu de sous-produits industriels." Thesis, Perpignan, 2018. http://www.theses.fr/2018PERP0041/document.

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La valorisation de chaleur fatale industrielle en flux gazeux à haute température peut bénéficier de technologies de stockage thermique thermocline, fonctionnant sur la base d’un matériau de stockage céramique et d’un caloporteur gazeux (air). La diversité des gisements de chaleur fatale et des débouchés potentiels met en évidence la nécessité d’un procédé de stockage versatile et robuste. Ce travail de thèse consiste à accompagner le développement de l’entreprise Eco-Tech Ceram, dont les deux activités sont le développement d’une unité de stockage thermique, et le développement de matériaux c
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Karimi, Estahbanati Mahmood Reza. "Photocatalytic valorization of biobased alcoholic wastes: a sustainable approach for the generation of green products." Doctoral thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/37084.

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Ces dernières années, une attention croissante a été portée à la valorisation de différents types de résidus en produits chimiques à valeur ajoutée. La valorisation des résidus peut non seulement résoudre les problèmes environnementaux croissants et actuels, mais elle peut contribuer également au développement durable de la société. Les résidus alcooliques constituent une catégorie à fort potentiel de valorisation en différents types de produits chimiques. Dans ce contexte, la valorisation photocatalytique des résidus alcooliques est une approche prometteuse du point de vue du développement du
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Soukeur, Abderraouf. "Valorisation des éléments de terres rares par procédés membranaires (ETR lourds)." Electronic Thesis or Diss., Rennes 1, 2022. http://www.theses.fr/2022REN1S073.

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Cette thèse intègre le cadre général de la thématique de recherche scientifique du laboratoire d’hydrométallurgie et chimie inorganique moléculaire ex valorisation des minerais de l’USTHB. Le travail concerne la valorisation des éléments de terres rares lourds (ETRLs) contenus dans les ressources secondaires notamment les sous-produits miniers et les équipements électroniques en fin de vie par des procédés innovants et peu coûteux. Ce travail porte sur la faisabilité des techniques de séparation pour la valorisation des éléments de terres rares lourds (ETRLs) à partir d'un déchet industriel is
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Bianca, Pietro. "Bioplastics filled with nut shells particles: valorization of agro-wastes for the development of sustainable materials." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amslaurea.unibo.it/25023/.

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Development of new biocomposites made with biopolymeric matrixes and biofillers coming from nut shells particles. Evaluation of how these fillers may change the thermal and mechanical properties of the material by changing the type of shell, grain size and quantity. The main properties analysed are: - Wettability of the powders - Melting and glass transition temperature - Degree of crystallinity - Young Modulus - Stress at maximum load and at break - Elongation at maximum load and at break - Hardness - Impact Resistance Finally it is presented a possible application of these ne
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Gibier, Maximilien. "Optimisation de l’intégration de déchets dans un procédé de fabrication de panneaux isolants en fibres de bois." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0132.

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L’entreprise PAVATEX appartenant au groupe SOPREMA, spécialisée dans la production de panneaux isolants à base de fibres de bois, souhaite étudier, dans le cadre du projet SoPRANo’TEX, l'élargissement de ses sources d'approvisionnement à d'autres essences de bois moins onéreuses. De plus, afin de participer activement au développement de la filière de valorisation des déchets issus de la filière ameublement (DEA), l'intégration de déchets bois fait partie des objectifs du projet. Ces déchets contiennent une part significative d'adjuvants, notamment de colle urée-formaldéhyde, qu'il convient d'
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