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Dissertations / Theses on the topic 'Carbon regeneration'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Cen, Jianqi. "Electrochemical regeneration of granular activated carbon." Thesis, University of Ottawa (Canada), 1994. http://hdl.handle.net/10393/6754.

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Laboratory experiments have investigated the feasibility of granular activated carbon (GAC) regeneration via an electrochemical technique. GAC was loaded with phenol by batch adsorption tests, electrochemically regenerated and finally reloaded with phenol. Regeneration was conducted by placing GAC on a platinum elecotrode within a batch reactor filled with electrolyte (generally a 1% NaCl solution), and applying a current to the reactor. Limited experiments show that cathodic regeneration is more efficient than anodic regeneration; the investigation concentrates on the former. Although anodic

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2

Covington, Brett A. "Activated carbon cloth regeneration with electrical resistance heating." Thesis, Monterey, California. Naval Postgraduate School, 1995. http://hdl.handle.net/10945/25649.

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3

Stern, Michael C. (Michael Craig). "Electrochemically-mediated amine regeneration for carbon dioxide separations." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/87130.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemical Engineering, February 2014.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 197-200).<br>This thesis describes a new strategy for carbon dioxide (CO₂) separations based on amine sorbents, which are electrochemically-mediated to facilitate the desorption and regeneration steps of the separation cycle. The absorptio

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4

Huggahalli, Madhusudhan. "Steam regeneration of activated carbon beds : mechanisms and models /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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5

Carballo-Meilan, M. Ara. "Regeneration of activated carbon by photocatalysis using titanium dioxide." Thesis, Loughborough University, 2015. https://dspace.lboro.ac.uk/2134/19065.

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The adsorption of methylene blue onto two types of commercial activated carbons, a mesoporous type (Norit CA1) and microporous type (207C) was analysed. Powdered TiO2 was mixed with the carbon and added to the dye solution to determine the influence of the photocatalyst during the adsorption process. Equilibrium and kinetics experiments were done with and without any addition of photocatalytic titanium dioxide (TiO2). Changes in capacity, heterogeneity, and heat of adsorption were detected and related to changes in the quantity of TiO2 added by evaluating the equilibrium parameter from 13 isot

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6

Deshpande, Himani D. "Bioactive polycaprolactone/carbon nanofiber scaffolds for bone tissue regeneration." Birmingham, Ala. : University of Alabama at Birmingham, 2009. https://www.mhsl.uab.edu/dt/2009r/deshpande.pdf.

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7

Al, Habis Nuha. "Engineering and Modeling Carbon Nanofiller-Based Scaffolds for Tissue Regeneration." University of Dayton / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1500561556157495.

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8

McEwen, Jeff. "Electrochemical regeneration of natural organic matter (NOM) loaded granular activated carbon." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/26714.

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Granular activated carbon (GAC) is used in municipal drinking water treatment plants for the removal of organic compounds (natural and synthetic), taste and odour compounds, as well as for the removal of disinfection by-products (DBPs). Many alternative technologies for GAC regeneration, such as bioregeneration, chemical regeneration, chemical desorption regeneration, and steam regeneration, have been tested in attempts to overcome the shortcomings of thermal regeneration. In this study, the suitability of electrochemical regeneration for municipal drinking water systems was investigated. Thre

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9

De, Las Casas Carla. "In-Situ Regeneration of Granular Activated Carbon (GAC) Using Fenton's Reagents." Diss., The University of Arizona, 2006. http://hdl.handle.net/10150/195619.

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Fenton-dependent recovery of carbon initially saturated with one of several chlorinated aliphatic contaminants was studied in batch and continuous-flow reactors. A specialty carbon, URV-MOD 1 (Calgon) was employed to minimize non-productive H2O2 demand - that which does not yield hydroxyl or superoxide radicals.Enhancement of PCE degradation kinetics by ferric iron addition is limited by iron solubility, even at relatively low pH. Quinone addition increased the pseudo-first-order rate constant for PCE loss temporarily. Only copper addition sustainably enhanced the specific rate of PCE loss.

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10

Cok, Michela. "Tridimensional Devices Based on Biopolymers and Carbon Nanotubes for Tissue Regeneration." Doctoral thesis, Università degli studi di Trieste, 2014. http://hdl.handle.net/10077/10376.

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2012/2013<br>Durante il corso degli ultimi anni, il campo delle nano strutture a base carboniosa sta ricevendo sempre più attenzione grazie alle loro peculiari caratteristiche chimiche e fisiche che le hanno rese buoni candidati per l’utilizzo nell’ambito biomedico. Nonostante dati scientifici contrastanti riguardo alla questione di potenziale tossicità, molti studi stanno invece dimostrando la biocompatibilità di diverse forme di nano strutture di carbonio (soprattutto dopo funzionalizzazione chimica) e la loro capacità di sostenere la crescita e la proliferazione di cellule e tessuti comples

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11

Mishra, Chinmay. "On-Site Regeneration of Granular Activated Carbon : A literature study, comparison and assessment of different regeneration methods to find potential on-site regeneration method in Sweden." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-291272.

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In this thesis project, different existing granular activated carbon regeneration methods/technologies are assessed based on existing literature. The project aims to identify and analyse the method with the highest on-site regeneration potential by using the Himmerfjärdsverket wastewater treatment plant as a reference and performing a cost estimation analysis. Information is gathered about different methods from the literature study and then sorted into the following parts: working principle, technology readiness and cost, advantages and disadvantages, and references (case studies). The meth

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12

Jones, Isabel L. "Legacies of tropical forest fragmentation and regeneration for biodiversity and carbon storage." Thesis, University of Stirling, 2017. http://hdl.handle.net/1893/26238.

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Expanding anthropogenic development within the tropical forest biome is driving the loss of an irreplaceable global resource. Mega-diverse tropical forests are vital for regulating the global carbon cycle, and are essential for climate change mitigation. Today, over half of the world’s remaining tropical forest is degraded or regenerating secondary forest. Tropical forests are becoming increasingly fragmented through the expansion of agriculture and roads. Landscape-scale flooding of terrestrial habitats caused by dam construction is an emerging driver of habitat loss and fragmentation. Much a

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13

Horner, Daniel J. "Adsorption of selected herbicides from water using activated carbon and polymeric adsorbents." Thesis, Loughborough University, 1999. https://dspace.lboro.ac.uk/2134/7159.

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A range of adsorbents have been evaluated for the adsorption of selected herbicide compounds from aqueous solution. The adsorption performance of LF -1, a carbonised polymer produced in the laboratory, Amberlite XAD-4, a commercially available polymeric adsorbent produced by Rohm and Haas and MN-200, a HypersolMacronet polymer produced by Purolite, were compared with a commercial activated carbon, Chemviron F -400. The pore size distributions of the adsorbents have been investigated using nitrogen adsorption. F-400, LF-1 and MN-200 were found to contain similar microporous structures. The carb

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14

Burman, Gustav. "Evaluation of carbon regeneration kiln : Comparison of different kiln types using simulation software." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-175613.

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Energy efficiency calculations and an economical analysis has been conducted on two different carbon regeneration kiln types. The purpose was do determine what economical winnings there could be by replacing the carbon regeneration system using propane burner with one heated by electricity. This project was conducted on a carbon regeneration kiln that stands at the G1A processing plant in Boliden. The two different heating solutions were implemented in the multiphysics software Comsol to determine their energy efficiency’s, and then an economical analysis was conducted by comparing the annual

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15

Czarnecki, Jarema S. "Engineered carbon-based scaffolds for hard and soft tissue repair, reconstruction or regeneration." University of Dayton / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1386953861.

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16

Reddy, S. Rama Chandra. "User group benefit appropriation in the global commons : an economic analysis of tropical forest management under uncertainty with a case study of India." Thesis, Bangor University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263317.

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17

Samuel, Adam. "Biogas upgrading and solvent regeneration in monoethanolamine and ionic liquids for carbon dioxide utilisation." Thesis, University of Sheffield, 2014. http://etheses.whiterose.ac.uk/9364/.

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Biogas is a renewable energy source, consisting primarily of methane and carbon dioxide (CO2), which can be upgraded by stripping the CO2 to produce biomethane. One of the standard industrial solvents used in biogas upgrading is monoethanolamine (MEA). Despite the effective CO2 capture capability of MEA, it is energy intensive to regenerate since it requires heating the solvent to approximately 120 oC. Additional issues with MEA include material losses due to degradation and evaporation. This work investigates methods for improving the biogas upgrading process by utilising microbubbles and com

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18

Amin, M. M., B. Bina, A. Rashidi, and H. Pourzamani. "Using of a New Carbon Nano Tube Version in Sheet Shape for Water and Wastewater Treatment." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35085.

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Removal of xylene (a toxic compound) from aqueous solution by modified multi wall carbon nano tubes (MWCNT) via silica as sheeted carbon nanotube (SCNT) was evaluated. The physicochemical properties of MWCNT such as structure and availability surface were improved due to convert tubes into sheets that cause significantly increase in xylene adsorption. The equilibrium amount (qe (mg/g)) in nano material's dose of 1g/l, xylene concentration of 10mg/l, contact time of 10min, and pH 7, for SCNT (qe 9.8 mg/g) was higher than single wall carbon nano tubes (SWCNT) (qe 9.2 mg/g) and MWCNT (qe 8.9

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19

Gupta, Anju R. "Investigation of Neuronal Affinity to Photoresist Derived Carbon: Study of Diferentiation and m-RNA Expression in PC-12 Cells." Digital WPI, 2007. https://digitalcommons.wpi.edu/etd-theses/713.

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Regenerative medicine holds promises for many neurodegenerative diseases such as Traumatic Brain Injury (TBI), a disorder that occurs when a sudden trauma causes damage to the brain, leading to apoptosis or necrosis of brain neurons. More than 5 million Americans suffer from TBI as a result of inability to regenerate damaged neurons. The aim of this project was to develop a biocompatible and electrically conductive substrate to promote growth and regeneration of neurons and for our long-term goal as a probe to record intracellular and multisite signals from brain. The substrate was fabricated

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20

RAGO, ILARIA CARMELA. "Tuning cellular functionality and mechanobiology via carbon nanotubes based scaffolds." Doctoral thesis, Università degli Studi di Trieste, 2018. http://hdl.handle.net/11368/2919812.

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La rigenerazione tissutale che occorre in seguito all’insorgere di malattie e/o lesioni attraverso l’organizzazione delle cellule in organi/tessuti, è fortemente indebolita dagli stimoli meccanici e biochimici esercitati dall’ambiente extracellulare danneggiato, i quali impattano definitivamente sul destino cellulare. Per guidare l’abilità rigenerativa dei tessuti, possono essere sfruttati biomateriali mimanti la complessa architettura fisiologica. La matrice extracellulare (ECM), tuttavia, è caratterizzata da un intricato network di elementi nanostrutturati che si adattano agli input cellula

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21

Sarver, Emily Allyn. "The Ferrous Regeneration Process for Use in Alternate Anode Reaction Technology in Copper Hydrometallurgy." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/34291.

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The Fe(II) regeneration process is an important aspect of Alternate Anode Reaction Technology (AART) using Fe(II)/Fe(III)-SO2 reactions for copper hydrometallurgy; however little has been done to study it specifically. The process regenerates Fe(II) via Fe(III) reduction by SO2(aq), catalyzed by activated carbon particles. To better understand and improve the process, two studies have been conducted with respect to variable factors and their affects on the regeneration. A study of fundamental kinetics confirms that the regeneration reaction is mass transfer-controlled, requiring adsorption

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22

Hammad, Seddik [Verfasser]. "Modelling of the bile canalicular network during liver regeneration and fibrosis after carbon tetrachloride intoxication / Seddik Hammad." Gießen : Universitätsbibliothek, 2012. http://d-nb.info/1064024904/34.

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23

Teste, François Philippe. "Role of mycorrhizal networks in dry Douglas-fir forests." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/675.

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Mycorrhizal networks (MNs) are fungal hyphae that connect the roots of at least two plants, potentially providing a conduit for interplant resource transfer. Interior Douglas-fir (Pseudotsuga menziesii var. glauca (Beissn.) Franco) is an obligate ectomycorrhizal (EM) tree species that has high potential to form MNs with neighboring trees because of its receptivity to a diverse community of EM fungi. This MN potential is expected to be greatest among conspecific trees. In this thesis, I determined the influence of MNs formed by residual Douglas-fir trees on interplant carbon transfer and sur

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24

Ettlili, Nabil. "Procédé d'adsorption avec régénération électrothermique pour la capture du dioxyde de carbone en post-combustion." Thesis, Vandoeuvre-les-Nancy, INPL, 2008. http://www.theses.fr/2008INPL017N/document.

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La capture du CO2 en sortie d’une centrale thermique constitue un réel défi technologique. Les procédés d’adsorption peuvent être utilisés pour traiter de telles fumées caractérisées principalement par leurs grands débits et leurs faibles teneurs en CO2 (2x106 à 3x106 m3.h-1 pour une centrale de 750 MW, % Vol de CO2 = 12-15 %). Certains procédés d’adsorption existants comme les procédés PSA et TSA ont été utilisés pour le traitement des COV. Dans le cas de l’adsorption modulée en pression (PSA) l’effluent à traiter passe à travers d’un lit fixe d’adsorbant à haute pression. L’adsorbant est rég

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25

Rosnow, Josh Jeffrey. "In vitro cultures and regeneration of Bienertia sinuspersici (Chenopodiaceae) under increasing concentrations of sodium chloride and carbon dioxide." Pullman, Wash. : Washington State University, 2010. http://www.dissertations.wsu.edu/Thesis/Spring2010/j_rosnow_042010.pdf.

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Thesis (M.S. in molecular plant sciences)--Washington State University, May 2010.<br>Title from PDF title page (viewed on July 9, 2010). "Department of Molecular Plant Sciences." Includes bibliographical references.

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26

Pettit, Jessika M. "Engelmann Spruce Survival and Regeneration After an Epidemic Spruce Beetle Outbreak on the Markagunt Plateau in Southern Utah." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/7199.

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Bark beetle outbreaks are becoming more intense and severe when coupled with the effects of climate change. Engelmann spruce (Picea engelmannii) is one such species facing large-scale, epidemic spruce beetle outbreaks. Large-scale disturbances, such as beetle outbreaks, have major consequences for the future success of the ecosystem, thus highlighting the importance of understanding what promotes amplified outbreaks as well as their effects on future seedling establishment. Our research focused on two parts of a large-scale beetle outbreak: the mortality of spruce trees and the subsequent rege

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Zanella, Odivan. "Sorção de nitrato em carvão ativado tratado com CaCl2 : estudo de ciclos de sorção/regeneração." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/56640.

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O nitrato (NO3-) é um íon inorgânico que está presente naturalmente no meio ambiente, sendo a forma mais estável do nitrogênio oxidado. Devido a sua alta solubilidade em água, é possivelmente o contaminante das águas subterrâneas mais difundido no mundo, causando problemas de produção de água potável e distúrbios ecológicos. Neste contexto, o objetivo deste estudo consiste em investigar a capacidade de sorção do carvão granular comercial ativado, modificado quimicamente com CaCl2, para remoção de nitrato em soluções aquosas e avaliar a capacidade de regeneração do sorvente em diferentes condiç

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Zanella, Odivan. "Produção de carvão ativado a partir do engaço da uva e estudo da regeneração eletroquímica do mesmo em um reator desenvolvido em escala laboratorial." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/117778.

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Sistemas de tratamento de efluentes, que empregam carvão ativado como sólido adsorvente são amplamente utilizados na indústria. O carvão ativado pode ser produzido a partir de materiais de diferentes origens, sendo os carvões comerciais geralmente obtidos a partir de madeira, casca de coco ou carvão mineral. Buscando aliar alta eficiência de processo e custo acessível de fabricação, a procura de materiais alternativos para fabricação de carvão ativado se apresenta como grande motivação. Outro aspecto importante relacionado com a redução de custos nos processos de adsorção é a reutilização do a

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29

Слободяник, Г. І. "Дія вуглецевого сорбенту з кверцетином на загоєння ран шкіри". Thesis, Видавництво СумДУ, 2003. http://essuir.sumdu.edu.ua/handle/123456789/9644.

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30

Munasinghe, Prinith Sumudu. "Effects of atmospheric acid deposition and single versus mixed leaf litters on foliar litter decomposition, carbon, nitrogen, phosphorus and calcium dynamics in a regenerating forest." Morgantown, W. Va. : [West Virginia University Libraries], 2008. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5769.

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Thesis (M.S.)--West Virginia University, 2008.<br>Title from document title page. Document formatted into pages; contains vi, 131 p. : ill. (some col.). Includes abstract. Includes bibliographical references.

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31

Hemmings, Stephen. "Supporting the regeneration process of a diesel particulate filter with the addition of hydrogen and hydrogen/carbon monoxide mixtures : diesel engine aftertreatment system." Thesis, Brunel University, 2012. http://bura.brunel.ac.uk/handle/2438/7073.

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This investigation aims to enhance the regeneration performance of a diesel particulate filter. This is achieved by introducing various chemical components to the regeneration process, which are representative of what can be generated ‘on board’ a vehicle using an exhaust gas fuel reformer. By researching the effects of introducing such components using a periodic injection cycle the aim is to reduce the volume of ‘reformates’ required to assist in proficient diesel particulate filter regeneration. As a result, this study also aims to support future work in the development of exhaust gas fuel

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32

Garg, Bharti. "Regeneration of sulfur rich amines in a combined capture system aimed to lower the cost of PCC in Australian coal fired power plants." Thesis, Federation University Australia, 2019. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/175529.

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Coal is the dominant and most reliable source of energy in Australia. However, the increasing global temperatures and its impact on the climate raises concerns on the use of coal worldwide. Due to availability of abundant, cheap quality coals, Australia is researching how it and its international customers can continue to use its abundant coal resources whilst limiting greenhouse emissions. Hence, low CO2 emitting energy technologies like carbon capture and storage (CCS) have an important role to play not only in power but also the cement and steel industries Post-combustion CO2 capture (PCC),

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33

Domergue, Lionel. "Étude de la régénération d’adsorbants par oxydation indirecte." Thesis, Rennes 1, 2019. http://www.theses.fr/2019REN1S028.

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Du fait du coût élevé de certains matériaux adsorbants d’intérêt pour le traitement de la micropollution organique, l’étude a porté sur la régénération de matériaux adsorbants de type zéolithes hydrophobes et monolithe de carbone dans le cas de l’adsorption du bisphénol A et du diclofénac comme micropolluants réfractaires. Des procédés d’oxydation avancée impliquant des espèces radicalaires HO• (réaction de Fenton, électro-Fenton) et SO₄• – (activation de persulfate par voie thermique) ont été utilisés pour assurer la régénération des matériaux par désorption et dégradation oxydative des pollu

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Zambrana, Carolina Oliveira. "Regeneração de carvão ativado utilizado para adsorção de pesticida por meio de processos oxidativos avançados." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-03022014-153551/.

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Como os tratamentos convencionais de água e efluentes normalmente não reduzem as concentrações de pesticidas significativamente, torna-se necessário utilizar outros tipos de tratamento associados e uma alternativa é o pós-tratamento empregando carvão ativado (CA) para adsorção desses poluentes. Sua viabilidade econômica está associada ao seu reúso. O desenvolvimento de novas técnicas de regeneração de CA contaminado após uso, como o emprego de Processos Oxidativos Avançados (POA), tem recebido muita atenção. Os POA são caracterizados pela geração de radicais hidroxila (HOo), que são fortes oxi

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Zhou, Wenchao. "Optimal method and optimal intensity in reforestation /." Umeå : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5644-4.pdf.

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Benedetti, Alberto. "Microstructural Characterization of CaO-based Sorbents During CO2 Capture and Sorbent Regeneration." Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3424687.

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This work of thesis deals with the micro-textural properties characterization of calcium oxide as CO2 capture solid sorbent, that strongly influence the carbonation reaction step performances. The investigation of the sorbent micro-structure was carried out by means of both in-situ and ex-situ techniques, varying the precursor (CaCO3) activation conditions and sintering effects on the final sorbent pore network. X-ray diffraction and N2-adsorption techniques were used to identify correlations between the sorbent micro-textural properties and the average sorbent crystallite size, by considerin

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Gineys, Mickael. "Régénération électrochimique de carbones nanoporeux utilisés pour le piégeage de micropolluants." Thesis, Orléans, 2015. http://www.theses.fr/2015ORLE2020.

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Les carbones activés, de par leur nanotexture développée, sont performants pour l’élimination de micropolluants organiques à l’état de traces. Ils trouvent une place prépondérante au sein des usines de traitement pour la dépollution de l’eau. Néanmoins, l’adsorption de ces composés, conduit à la saturation du matériau selon un processus d’adsorption irréversible. Un procédé électrochimique capable d’opérer à la régénération in situ des adsorbants carbonés chargés en polluants est proposé. L’applicabilité du procédé a été évaluée sur une grande diversité de micropolluants rencontrés dans les ef

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Cabrera-Codony, Alba. "Siloxane removal in the energy recovery of biogas: sequential adsorption/oxidation processes." Doctoral thesis, Universitat de Girona, 2016. http://hdl.handle.net/10803/399731.

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The thesis deals with removal of organosilicon compounds in the energy recovery of biogas. Alternative adsorbents for the siloxane removal were studied, and the physical and chemical mechanisms involved in the siloxane adsorption were discovered, which improved the yield of the adsorption and regeneration technologies using both activated carbons and zeolites. Moreover, several technologies based on advanced oxidation processes have been applied in order to regenerate and reuse the exhausted adsorbents. The thesis studies the siloxane removal at lab-scale close to real scenario conditions, in

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Hahn, George Eugene III. "Wildland Fire in the Central Appalachian Mountains: Impacts on Above- and Belowground Resources." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/102606.

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Prescribed fire use in Virginia and West Virginia has increased over the past ten years as forest managers on public lands have increasingly used prescribed fire to meet management goals. These goals include hazardous fuel reduction, wildlife habitat restoration and management, and control of less desired vegetation. Research is needed to better understand the effects of wildland fire on forest ecosystems. In this study, we addressed wildland fire's effects on water, vegetation, and soil resources in the central Appalachian Region. Moreover, the long-term efficacy of various types of timber ha

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Kundrat, Mary Elizabeth. "A Comprehensive Series for Predicting Bone Dynamics: Forecasting Osseous Tissue Formation using the Molecular Structure of a Biomaterial." University of Dayton / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1282842002.

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Leitão, Rodrigo Lopes de Freitas. "Remoção de nitrogênio amoniacal de efluente de reator hidrolítico de lodo primário de estação de tratamento de esgotos utilizando adsorção em zeólita visando à produção de fonte de carbono para desnitrificação." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-25032007-165847/.

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Os processos anaeróbios têm sido recentemente adotados como unidades principais em sistemas de tratamento de efluentes, em virtude das inúmeras vantagens que apresentam. Este trabalho de pesquisa, no entanto, visa possibilitar a obtenção de fonte de carbono prontamente degradável a partir de uma das primeiras aplicações da biotecnologia anaeróbia: a digestão de lodo. A partir de um digestor hidrolítico e acidogênico de lodo primário foi possível a obtenção de efluentes com altas concentrações de DQO solúvel (da ordem de 4.000 mg/L) e ácidos graxos voláteis AGV (da ordem de 600 mg/L). Porém

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Quesada, Penate Isariebel. "Metodos no convencionales para el tratamiento de aguas contaminadas con productos farmaceuticos." Thesis, Toulouse, INPT, 2009. http://www.theses.fr/2009INPT013G/document.

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Des solutions modèles de lévodopa et de paracétamol, représentatives d'effluents pharmaceutiques, ont été traitées par adsorption et par des techniques non conventionnelles comme les ultrasons, l'oxydation en voie humide catalytique et le procédé séquentiel adsorption-oxydation ADOX, en utilisant des charbons actifs comme adsorbants et/ou catalyseurs. Les isothermes d'adsorption des deux composés sur trois charbons actifs ont été caractérisées, puis en oxydation, la puissance et la fréquence optimales des ultrasons ont été déterminées. Enfin, les études de cinétique d'oxydation catalytique en

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Muranaka, Cínthia Tiemi. "Combinação de adsorção por carvão ativado com Processo Oxidativo Avançado (POA) para tratamento de efluentes contendo fenol." Thesis, Toulouse, INPT, 2010. http://www.theses.fr/2010INPT0089/document.

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L'adsorption sur charbon actif est une technique relativement répandue de post-traitement des effluents aqueux. Cependant il ne s'agit pas d'un traitement ultime, puisque les polluants restent concentrés sur la surface solide. Des techniques de régénération doivent donc être mises en œuvre. C'est dans ce contexte qu'ont été étudiés ici les procédés d'oxydation avancée Fenton et photo-Fenton, dont l'efficacité est reconnue pour éliminer la pollution organique. Plus précisément, l'objet de cette thèse est l'étude sur plusieurs cycles consécutifs de l'adsorption du phénol sur charbon actif et de

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Krou, N’guessan Joachim. "Etude expérimentale et modélisation d'un procédé séquentiel AD-OX d'élimination de polluants organiques." Thesis, Toulouse, INPT, 2010. http://www.theses.fr/2010INPT0013/document.

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Ce travail a pour objectif de concevoir, de mettre en oeuvre et de modéliser, un petit pilote de traitement d'eau afin d'enchainer un grand nombre de cycles du procédé séquentiel AD-OX (ADsorption-OXydation) sur Charbon Actif (CA). On étudie l'évolution, au cours des cycles, de la capacité d'adsorption de différents charbons actifs (commerciaux et issus de la pyrolyse de boue de station d'épuration) sur différents effluents : modèle (phenol), colorant (tartrazine) et effluent industriel. L'étude des performances, en adsorption puis oxydation alternées, a precisé les caracteristiques fondamenta

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Seria, Elisa Libera. "Rigenerazione epatica mediante l'impiego di cellule staminali mesenchimali in un modello murino di danno epatico tetracloruro-indotto." Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/1133.

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Bone marrow-derived mesenchymal stem cells (MSCs) have been investigated as marker of liver regeneration in an experimental model of acute liver failure (ALF). This model was created in Wistar rats through an intraperitoneal injection of carbon tetrachloride (CCl4). MSCs (3 million) were collected by long bones of 10 Wistar rats and then intravenously infused 24 hours after induction of ALF in 16 rats, Group A. In control Group B, 16 rats received a peritoneal injection of CCl4, and an intravenous infusion of normal saline. All rats were sacrificed at 2, 3, 4 and 7 days post-CCl4-injection. To

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Miguet, Marianne. "Adsorption de COV issus d'eaux souterraines et régénération des charbons actifs par voie solaire." Thesis, Perpignan, 2015. http://www.theses.fr/2015PERP0029/document.

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Ce manuscrit s’intéresse à une filière globale et durable de dépollution des eaux souterraines. Le polluant cible, le tétrachloroéthylène, est un composé organique volatil. La première étape de cette filière est la séparation du contaminant de l’eau. Elle a été réalisée par adsorption sur charbons actifs dans une colonne en lit fixe. Les résultats obtenus en laboratoire sur les capacités et les cinétiques d’adsorption ont permis de montrer l’efficacité de ce procédé. Un modèle issu de ces expériences a représenté correctement des conditions opératoires variées correspondant à celles utilisées

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Ramalingam, Shivaji Ganesan. "Adsorption de composés organiques volatils et régénération de charbons actifs - Developpement d'outils de simulation." Phd thesis, Ecole des Mines de Nantes, 2012. http://tel.archives-ouvertes.fr/tel-00755921.

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Les vapeurs organiques émises des solvants utilisés dans le produit chimique / la nourriture / les processus pharmaceutiques, ou des stations d'entreposage de combustible d'hydrocarbure aux terminus de pétrole, peuvent être efficacement capturées par l'adsorption sur les lits de charbon actif. L'objectif général du programme de recherche est les études expérimentales et les études de simulation de l'adsorption et des pas de régénération en cas de l'enlèvement COV qui estime dans les émissions industrielles par l'Adsorption (TSA - Température Swing Adsorption et VTSA -Vacuum Température Swing A

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Benhamed, Imane. "Amélioration par ajout d’un métal de transition de la régénération in situ d’un charbon actif par oxydation catalytique." Phd thesis, Toulouse, INPT, 2015. http://oatao.univ-toulouse.fr/14168/1/benhamed.pdf.

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En raison de la réglementation plus sévère sur la pollution de l’eau, l’oxydation chimique (CWAO et AOP) et l’hybridation adsorption / régénération par oxydation sont de plus en plus envisagées pour éliminer les polluants réfractaires. L’objectif de ce travail est d’étudier l’effet de l’imprégnation du fer ou du cuivre sur l’activité du charbon actif dans l’oxydation catalytique en voie humide (avec ou sans ajout d’H202), ainsi que sur sa durée de vie comme adsorbant / catalyseur dans le procédé séquentiel Adsorption-Oxydation (ADOX). Les catalyseurs (Fe / AC et Cu / AC) ont été préparés par i

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Olivier, Florian. "Elaboration, caractérisation, dopages et évaluations in vitro et in vivo de matériaux hybrides : Tissus de fibres de carbone / Phosphates de calcium." Thesis, Orléans, 2018. http://www.theses.fr/2018ORLE2052/document.

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Ce travail a consisté à optimiser la synthèse de phosphates de calcium (CaP) déposés sur tissus de fibres de carbone (TFC) par procédé de sono-électrodéposition afin d’obtenir des revêtements uniformes. Les paramètres électrochimiques clés optimisés sont le type et la durée de polarisation cathodique ainsi que la température de l’électrolyte. Pour un potentiel constant de -1 V à 70 °C, un régime d’électrolyse contrôlé de l’eau conduit à la formation d’un revêtement plaquettaire d’hydroxyapatite déficitaire en calcium (CDA) carbonatée. Les plaquettes sont composées de particules lamellaires (de

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Newman, Peter Lionel Harry. "Carbon Nanotubes for Bone Tissue Engineering." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/16308.

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Biological tissues are compositionally and structurally exquisite – a complex network of proteins and cells organised with molecular-precision. Unfortunately, in the absence of an organ transplant or tissue graft, there are no technologies that can completely repair or restore this complex system when it fails. With the hopes of regenerating failing tissue, tissue engineers have developed scaffold structures able to support cell life. As yet, these structures are unable to recreate the complexities of the biological environment, limiting the success of this approach. Nanotechnologies have real

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