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Dissertations / Theses on the topic 'CO2 capture and conversion'

Author: Grafiati

Published: 25 May 2024

Last updated: 25 July 2025

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1

Brandvoll, Øyvind. "Chemical looping combustion : fuel conversion with inherent CO2 capture." Doctoral thesis, Norwegian University of Science and Technology, Department of Energy and Process Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1203.

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<p>Chemical looping combustion (CLC) is a new concept for fuel energy conversion with CO<sub>2</sub> capture. In CLC, fuel combustion is split into seperate reduction and oxidation processes, in which a solid carrier is reduced and oxidized, respectively. The carrier is continuously recirculated between the two vessels, and hence direct contact between air and suel is avoided. As a result, a stoichiometric amount of oxygen is transferred to the fuel by a regenerable solid intermediate, and CLC is thus a varient of oxy-fuel combustion. In principle, pure CO<sub>2</sub> can be obtained from the

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2

Kim, Hyung Rae. "Chemical Looping Process for Direct Conversion of Solid Fuels In-Situ CO2 Capture." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1250605561.

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3

MARCHESE, MARCO. "Conversion of industrial CO2 to value-added fuels and chemicals via Fischer-Tropsch upgrade." Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2914540.

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4

Ramkumar, Shwetha. "CALCIUM LOOPING PROCESSES FOR CARBON CAPTURE." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1274882053.

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5

Shokouhfar, Nasrin. "Synthèse et caractérisation de nouvelles armatures métal-organique à base de zirconium à partir de ligands carboxylates et étude de leur application dans l'adsorption et la détection des pollutions de l'eau et la capture et la conversion du CO2 et N2." Electronic Thesis or Diss., Université de Lille (2022-....), 2023. http://www.theses.fr/2023ULILN058.

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Cette thèse porte sur la synthèse et la caractérisation de cadres métallo-organiques (MOF) à base de Zr et leurs applications dans le traitement de l'eau et la production de carburant solaire. Les MOF sont des matériaux poreux composés d'ions métalliques et d'éléments de liaison organiques qui présentent des structures et des fonctionnalités ajustables. Ces propriétés les rendent aptes pour diverses applications, telles que le stockage de gaz, la catalyse, la détection, l'administration de médicaments, etc.Le traitement de l'eau consiste à éliminer les contaminants de l'eau afin de la rendre p

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6

Daza, Yolanda Andreina. "Closing a Synthetic Carbon Cycle: Carbon Dioxide Conversion to Carbon Monoxide for Liquid Fuels Synthesis." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6079.

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CO2 global emissions exceed 30 Giga tonnes (Gt) per year, and the high atmospheric concentrations are detrimental to the environment. In spite of efforts to decrease emissions by sequestration (carbon capture and storage) and repurposing (use in fine chemicals synthesis and oil extraction), more than 98% of CO2 generated is released to the atmosphere. With emissions expected to increase, transforming CO2 to chemicals of high demand could be an alternative to decrease its atmospheric concentration. Transportation fuels represent 26% of the global energy consumption, making it an ideal end produ

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7

Trompelt, Michael. "Untersuchung von Möglichkeiten zur Wirkungsgradsteigerung von braunkohlegefeuerten IGCC-Kraftwerken mit CO2-Abtrennung." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2015. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-158214.

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Mit der Arbeit werden braunkohlegefeuerte IGCC-CCS-Kraftwerke gesamtheitlich beschrieben, deren Potenziale erarbeitet und mit ASPEN Plus™ sowie EBSILON® Professional simulativ abgebildet. Es kann gezeigt werden, dass ausgehend von Basiskonzepten braunkohlegefeuerter IGCC-CCS-Kraftwerke mit verschiedenen Potenzialen zum gegenwärtigen Stand der Technik sowie dem im Jahr 2025 Wirkungsgradsteigerungen sowie prozesstechnische Vereinfachungen möglich sind. Als Potenziale werden dabei verringerte Braunkohletrocknung, konservativere Annahmen der technologischen Auslegung als auch Modifizierungen der C

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8

Danaci, Simge. "Optimisation et intégration de catalyseurs structurés en réacteurs structurés pour la conversion de CO₂ en méthane." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAI041/document.

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Dans cette étude de doctorat, la technique de dépôt tridimensionnel de fibres (3DFD) a été appliquée pour développer et fabriquer des structures de support catalytique multi-canaux avancées. En utilisant cette technique, le matériau, la porosité, la forme et la taille des canaux et l'épaisseur des fibres peuvent être contrôlées. L'objectif de cette recherche est d'étudier les performances des supports structurés 3D conçus pour la méthanation du CO2 en termes d'activité, de sélectivité de stabilité et d’étudier l'impact des propriétés spécifiques introduites dans la conception structurale des s

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9

Beliaeva, Kristina. "Captage et conversion électrochimique du CO2 dans des liquides ioniques et des solvants eutectiques profonds avec des catalyseurs à base de Pd." Electronic Thesis or Diss., Université Grenoble Alpes, 2023. http://www.theses.fr/2023GRALI094.

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Le captage et la réduction électrochimique du CO2 (CCU) est une solution pour décarboniser le secteur industriel. Cette technologie valorise la source de carbone peu chère en molécules carbonées à forte valeur ajoutée. Des nombreuses méthodes de valorisation du CO2 existent pour limiter la libération de ce gaz à effet de serre dans l’atmosphère. Pendant cette thèse, nous proposons le captage du CO2 complété par la conversion électrochimique en différentes molécules carbonées dans une cellule électrochimique. L’électroconversion de dioxyde de carbone est une méthode prometteuse grâce à des cond

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10

Zeng, Liang. "Multiscale Study of Chemical Looping Technology and Its Applications for Low Carbon Energy Conversions." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354722135.

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11

Olivieri, Luca <1987&gt. "Polymeric membranes for CO2 capture." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7418/4/olivieri_luca_tesi.pdf.

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The object of this PhD work is the study of innovative, composite and nanostructured polymeric materials for membrane-based separation and removal of CO2 from gaseous streams. The research on gas separation membranes, in the last two decades was largely devoted to the synthesis and fabrication of new, multiphasic materials, such as copolymers, composite materials bearing fillers dispersed in the polymeric matrix, or functionalized materials having selective functional groups attached to the polymer backbone. The materials investigated in this thesis can be divided in three classes: copolyet

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Olivieri, Luca <1987&gt. "Polymeric membranes for CO2 capture." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7418/.

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The object of this PhD work is the study of innovative, composite and nanostructured polymeric materials for membrane-based separation and removal of CO2 from gaseous streams. The research on gas separation membranes, in the last two decades was largely devoted to the synthesis and fabrication of new, multiphasic materials, such as copolymers, composite materials bearing fillers dispersed in the polymeric matrix, or functionalized materials having selective functional groups attached to the polymer backbone. The materials investigated in this thesis can be divided in three classes: copolyet

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13

Xu, Shaojun. "Plasma-assisted conversion of CO2." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/plasmaassisted-conversion-of-co2(19c87dfa-ba79-47ea-a63d-0a0026a03bba).html.

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The transformation of carbon dioxide into added value chemicals by a plasma-activated catalytic process was studied. First of all, the current status of CO2 reutilisation by plasma-assisted technologies was reviewed. Followed by an in-depth study on the process of plasma-catalysis, the effects of dilution gas (i.e. argon and nitrogen) addition and operating parameters in CO2 dissociation were systematically investigated in non-thermal atmospheric pressure plasma barium titanate (BaTiO3) packed-bed reactor from both an engineering and scientific point of view. The extensive experimental and mod

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14

Dugstad, Tore, and Esben Tonning Jensen. "CO2 Capture from Coal fired Power Plants." Thesis, Norwegian University of Science and Technology, Department of Energy and Process Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9770.

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<p>Coal is the most common fossil resource for power production worldwide and generates 40% of the worlds total electricity production. Even though coal is considered a pollutive resource, the great amounts and the increasing power demand leads to extensive use even in new developed power plants. To cover the world's future energy demand and at the same time limit our effect on global warming, coal fired power plants with CO2 capture is probably a necessity. An Integrated Gasification Combined Cycle (IGCC) Power Plant is a utilization of coal which gives incentives for CO2 capture. Coal is

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15

DeLucia, David Earl. "Cyclic use of limestone for CO2 capture." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/15136.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1985.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING<br>Bibliography: leaf 150.<br>by David Earl DeLucia.<br>M.S.

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16

Higby, Joshua. "Conversion of CO2 to higher alcohols." Thesis, Luleå tekniska universitet, Industriell miljö- och processteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-83392.

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I rapporten framgår det en termodynamisk analys för reverse water gas shift med att sammanmata etanol för att undvika det långsammaste steget i reaktionen för att producera högre alkoholer. Ifrån ett termodynamiskt perspektiv, verkar det möjligt att utgå ifrån reverse water gas shift för att producera högre alkoholer vid 100 bar med en temperatur på 300C . Reaktionen är exotermisk, vilket gynnas av det låga temperaturer och det rekommenderas höga tryck p.g.a. en mol kontraktion. Jämviktshalterna var låga, det föreslås att ta bort vatten ifrån jämvikten. I den matematiska modellen utgick det i

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17

Ingvarsdóttir, Anna. "Comparison of direct air capture technology to point source CO2 capture in Iceland." Thesis, KTH, Kemiteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-289164.

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Det är välkänt att klimatförändringar på grund av global uppvärmning är en av de största kriserna som hotar jorden. Det är en enorm utmaning för mänskligheten att minska koldioxidutsläppen, den främsta orsaken till global uppvärmning. Enkelt genomförbara åtgärder är inte tillräckliga och teknik för att ta bort koldioxid från atmosfären anses nödvändig för att temperaturökningen inte ska överstiga de 1,5 °C som anges i Parisavtalet. Direkt infångning av koldioxid från luft (vanligen kallad direkt luftinfångning, (Eng. Direct air capture - DAC)) är en ny teknik som kan ta bort koldioxid direkt f

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18

Hu, Yukun. "CO2 capture from oxy-fuel combustion power plants." Licentiate thesis, KTH, Energiprocesser, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-48666.

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To mitigate the global greenhouse gases (GHGs) emissions, carbon dioxide (CO2) capture and storage (CCS) has the potential to play a significant role for reaching mitigation target. Oxy-fuel combustion is a promising technology for CO2 capture in power plants. Advantages compared to CCS with the conventional combustion technology are: high combustion efficiency, flue gas volume reduction, low fuel consumption, near zero CO2 emission, and less nitrogen oxides (NOx) formation can be reached simultaneously by using the oxy-fuel combustion technology. However, knowledge gaps relating to large scal

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19

Westman, Snorre Foss. "Power plant with CO2 capture based on adsorption." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18504.

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A dynamic one-dimensional homogeneous model for a packed bed sorption-enhanced water-gas shift (SEWGS) reactor has been developed, describing the non-isothermal, non-adiabatic and non-isobaric operation of this type of reactor. The model was developed to describe a SEWGS reactor designed to work under operating conditions and syngas feeds encountered in a coal-fed Integrated Gasification Combined Cycle power plant utilizing an oxygen-fed gasifier. Different from previous integration designs reported in literature, the feasibility of leaving out the conventional high-temperature water-gas shift

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Ekre, Kjetil Vinjerui. "Novel Processes for Power Plant with CO2 Capture." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19372.

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The purpose of this thesis was to examine different technologies, which enhances the CO2 partial pressure in the flue gas from the natural gas combined cycle. A base case has been created as a reference for comparison of the other cycles. The base case includes a MEA capture plant with a reboiler duty of 3,6 MJ/kg CO2. To simulate the process in this thesis HYSYS and GT PRO have been used as simulation tools. The thesis has also looked into ways of extracting steam from the steam cycle to be used in the reboiler. The chosen extraction point was the crossover between the intermediate-pressure t

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Champagne, Scott. "Steam Enhanced Calcination for CO2 Capture with CaO." Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30905.

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Carbon capture and storage technologies are necessary to start lowering greenhouse gas emissions while continuing to utilize existing thermal power generation infrastructure. Calcium looping is a promising technology based on cyclic calcination/carbonation reactions which utilizes limestone as a sorbent. Steam is present in combustion flue gas and in the calciner used for sorbent regeneration. The effect of steam during calcination on sorbent performance has not been extensively studied in the literature. Here, experiments were conducted using a thermogravimetric analyzer (TGA) and subsequentl

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22

Parker, Qamreen. "Molecular simulations of ionic liquids for CO2 capture." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10048467/.

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Ionic liquids (ILs) are molten salts at temperatures below 100 °C or at room temperature, achieving this by possessing ions that pack weakly, preventing the formation of a stable crystal lattice. The very low or non-existent volatility of the liquids is one of the most important reasons for why ILs are explored for carbon dioxide (CO2) capture, along with interesting properties such as thermal stability, nonflammability and tunability for high CO2 solubility. It is therefore important to understand, at a molecular level, the structure and properties of ILs. The work presented in this thesis em

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23

Amara, Soumia. "CO2 capture in industry using chilled ammonia process." Thesis, KTH, Energiprocesser, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-292504.

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CO2 capture and storage (CCS) is estimated to reduce 14% of the global CO2 emissions in the 2 °C scenario presented by the International Energy Agency. Moreover, post combustion capture is identified as a potential method for CO2 capture from industry since it can be easily retrofitted without disturbing the core industrial process. Among the post-combustion capture methods, absorption using mono-ethanol amine (MEA) is the most mature technology that has been demonstrated at plant scale. However, using chilled ammonia process as a post combustion capture technology in a cement industry can red

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Higgins, Stuart James. "Design and Optimization of Post-Combustion CO2 Capture." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/80003.

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This dissertation describes the design and optimization of a CO2-capture unit using aqueous amines to remove of carbon dioxide from the flue gas of a coal-fired power plant. In particular we construct a monolithic model of a carbon capture unit and conduct a rigorous optimization to find the lowest solvent regeneration energy yet reported. Carbon capture is primarily motivated by environmental concerns. The goal of our work is to help make carbon capture and storage (CCS) a more efficient for the sort of universal deployment called for by the Intergovernmental Panel on Climate Change (IPC

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Molinder, Roger Axel. "CO2 capture materials for sorption enhanced steam reforming." Thesis, University of Leeds, 2012. http://etheses.whiterose.ac.uk/2871/.

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The Ca-looping cycle is a chemical process that alternates capture and release of CO2 using a Ca-based sorbent which can be applied to hydrogen production by steam reforming. Adding sorbent particles to the reformer achieves nearly pure hydrogen with higher yields via the ‘sorption enhancement’ effect. The major disadvantage is deactivation of the sorbent following multiple cycles and suggested solutions have been incorporation of inert material and regeneration by hydration. This work investigates Ca-based sorbents with a focus on their use for steam reforming of liquid feedstock. Thermodynam

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Bernadet, Sophie. "Conversion photocatalytique du CO2 sur monolithes poreux." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0172/document.

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Dans le contexte actuel de développement de nouvelles sources d'énergie non fossiles tout en minimisant l'impact environnemental, la production de carburants solaires par la valorisation des émissions anthropiques de CO2 apparaît comme une solution à fort potentiel. Le principal défi dans les processus artificiels photo-induits concerne le caractère bidimensionnel des systèmes utilisés, en raison de la faible profondeur de pénétration des photons. Ce travail de thèse se concentre sur le développement de mousses solides alvéolaires, issues de la chimie intégrative, présentant une porosité hiéra

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27

TARRARAN, LOREDANA. "Microbial CO2 conversion to value-added products." Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2967854.

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Nogalska, Adrianna. "Ambient carbon dioxide capture and conversion via membranes." Doctoral thesis, Universitat Rovira i Virgili, 2018. http://hdl.handle.net/10803/664718.

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El canvi climàtic causat per l'augment del contingut de CO2 a l'atmosfera està causant gran preocupació avui dia. La constant necessitat de generació d'energia verda ens va inspirar a desenvolupar un sistema fotosintètic artificial. El sistema funciona com un full, on el CO2 es capta directament de l'aire a través dels porus de la membrana i passa als següents compartiments per convertir-se finalment en metanol o altres hidrocarburs i serà utilitzat com a combustible. L'objectiu principal del treball és revelar la influència dels contactors de membrana basats en polisulfona sobre la taxa de c

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Bilsbak, Vegard. "Conditioning of CO2 coming from a CO2 capture process for transport and storage purposes." Thesis, Norwegian University of Science and Technology, Department of Energy and Process Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9943.

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VITTONI, CHIARA. "Hybrid Organic-Inorganic Materials for CO2 Capture and Utilization." Doctoral thesis, Università del Piemonte Orientale, 2018. http://hdl.handle.net/11579/97188.

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In this PhD thesis, different types of hybrid organic-inorganic materials were studied as solid sorbents for the carbon dioxide capture, in order to give additional hints to the comprehension of phenomena playing an important role in CO2 adsorption processes. In the first part, hybrid organic-inorganic SBA-15 silicas functionalized with variable amount of amino groups were studied aiming to evaluate the influence of the different basic species on CO2 capture ability. Afterwards, it was decided to study the influence of siliceous support properties on the adsorption process. For this purpose, s

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Busu, Alice. "Development of PVA/PDA nanocomposite membranes for CO2 capture." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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In this project, composite membranes containing nanoparticles of polydopamine PDA (dopamine polymer) will be manufactured and characterized in view of their use for the separation of CO2. Polysulfone will be used as a polymer matrix support while poly(vinyilalcohol) has been chosen as selective layer material. The work will first focus on the optimization of the manufacturing parameters of nano composite membranes and then on the influence of the integration of PDA nanoparticles in the polymeric support at different concentrations. The final objective is to test the material properties, with

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Baig, Yasir. "Technology qualification for IGCC power plant with CO2 Capture." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-14712.

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Summary:This thesis presents the technology qualification plan for the integrated gasification combined cycle power plant (IGCC) with carbon dioxide capture based on DNV recommendations. Objectives of the thesis work were development of a qualification plan, heat balance, material balance and performance characteristics for IGCC with CO2 capture. GT PRO software by thermoflow was used for the development of heat balance, material balance and performance characteristics of power plant.IGCC with pre-combustion capture is a process of generating power with very low CO2 emissions. The IGCC process

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Samari, Mohammad. "CO2 Capture from Dilute Sources via Lime-Based Sorbents." Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30978.

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Direct capture of CO2 from ambient air is a developing technology, which is capable of removing CO2 directly from the atmosphere. Moreover, this technology is independent from sources of CO2 emissions. Hence, it can be set up at locations where pure stream of CO2 is needed such as in enhanced oil recovery. In this research, the performance of pelletized and natural limestone for CO2 capture from air in a fixed bed is studied. To compare the performance of sorbents for air capture, the effects of particle type (natural limestone and pelletized limestone), particle size (250-425 µm and 425-600 µ

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Stene, Henrik Sørskår, and Ole Marius Moen. "Power Plant with CO2 Capture based on PSA Cycle." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-26240.

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Two coal-fired power plants with CO2 capture by Pressure Swing Adsorption (PSA) havebeen modeled and simulated. The two power plants considered were IntegratedGasification Combined Cycle (IGCC) and conventional Pulverized Coal Combustion (PCC). Amathematical model of the PSA process for each of the power plants was developed and thegoal was to evaluate the feasibility of PSA as a technology for decarbonisation. Theperformance with CO2 capture by PSA was compared to a reference plant without CO2capture and to a power plant with CO2 capture by absorption, which is considered as thebenchmark tech

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Biyouki, Zeinab Amrollahi. "Thermodynamic analysis of CO2 capture processes for power plants." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-26380.

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This thesis work presents an evaluation of various processes for reducing CO2 emissions from natural-gas-fired combined cycle (NGCC) power plants. The scope of the thesis is to focus mainly on post-combustion chemical absorption for NGCC. For the post-combustion capture plant, an important interface is the steam extraction from the steam turbine in order to supply the heat for solvent regeneration. The steam extraction imposes a power production penalty. The thesis includes analysis and comparison between several chemical absorption processes configurations integrated with NGCC. The objectives

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Ali, Usman. "Process simulation of power generation systems with CO2 capture." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/16011/.

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The increase in the anthropogenic greenhouse gases has severely damaged the environment in terms of pollution and global climate change. It is capturing the carbon dioxide from the present and future power plants that could save the climate. The post-combustion CO2 capture system using amine wet scrubbing is investigated in detail for natural-gas fired power plant from pilot-scale to commercial-scale level. The research work is focused on the investigation of the different innovative modifications to the micro gas turbine (MGT) including exhaust gas recirculation (EGR), steam injection and hum

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Esam, Odette Amana. "CO2 Capture on Porous Adsorbents Containing Surface Amino Groups." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etd/2304.

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The potential impact of carbon dioxide as a major source of global warming has led to extensive research in order to mitigate the greenhouse effect. In this work, four adsorbents were synthesized and studied. The adsorbents were obtained by grafting and sol-gel of amino-containing molecules such as bis[3-(trimethoxysilyl)propyl]amine as monoamine and [3-(2-aminoethylamino)propyl]- trimethoxysilane as diamine on the surface of silica gel. CO2 passed through adsorbents at room temperature for its capture, then desorbed at moderate heating, and stored in the form of insoluble BaCO3. The adsorbent

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GILLONO, MATTEO. "3D printable materials for CO2 capture and separation technologies." Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2827712.

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Amado, Verónica Catarina Ferreira. "“One-pot” enzymatic conversion of CO2 to methanol." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/10900.

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MOROSANU, EDUARD ALEXANDRU. "Catalytic processes for CO2 conversion into Synthetic Methane." Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2841162.

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LIENDO, CASTILLO FREDDY JESUS. "CO2 conversion through the synthesis of CaCO3 nanoparticles." Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2907014.

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Kolle, Joel Motaka. "Mesoporous Organosilicas for CO2 Capture and Utilization: Reaction Insight and Material Development." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/40464.

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As mankind attempts to halt climate change and global warming, large-scale carbon dioxide (CO2) capture, utilization and storage (CCUS) technologies are viewed as an indispensable approach to curb CO2 emission. This thesis focused on better understanding CO2-amine interactions during adsorption, while developing in parallel covalently immobilized polyethylenimine (PEI) adsorbents for CO2 adsorption. In addition, catalyst reusability issues reported in the synthesis of cyclic carbonates (CCs) from CO2 and epoxides using metal-free supported immobilized quaternary ammonium salts are addressed, w

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Errey, Olivia Claire. "Variable capture levels of carbon dioxide from natural gas combined cycle power plant with integrated post-combustion capture in low carbon electricity markets." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/33240.

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This work considers the value of flexible power provision from natural gas-fired combined cycle (NGCC) power plants operating post-combustion carbon dioxide (CO2) capture in low carbon electricity markets. Specifically, the work assesses the value of the flexibility gained by varying CO2 capture levels, thus the specific energy penalty of capture and the resultant power plant net electricity export. The potential value of this flexible operation is quantified under different electricity market scenarios, given the corresponding variations in electricity export and CO2 emissions. A quantified a

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Ystad, Paul Andreas Marchioro. "Power Plant with CO2 Capture based on Absorption : Integration Study." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11057.

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This thesis gives a detailed evaluation of the integration of power plants and post-combustion CO2 capture based on absorption. The study looks at natural gas combined cycles and pulverized coal power plants. Also the absorption process has been evaluated separately, aiming at reducing energy requirements in the capture process. In the first part of the thesis a theoretical part was given on fundamentals of CO2 capture by absorption, power generation, and process integration. Based on this theory, several case studies were defined for each of the three main processes. Simulation models were bu

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Leifsen, Henning. "Post-Combustion CO2 Capture Using Chemical Absorption : Minimizing Energy Requirement." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12865.

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Capture and storage from fossil fuel fired power plants is drawing increasing interest as a potential method for the control of greenhouse gas emissions. An optimization and technical parameter study for a CO2 capture process of the flue gas of a commercial gas power plant, based on absorption/desorption process with MEA solutions, using HYSYS with the Amine Property Package fluid package, has been performed. The optimization has aimed to reduce the energy requirement for solvent regeneration, by investigating the effects of circulation rate, cross-flow heat exchanger minimum approach, desorbe

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Johnsen, Erik Lien. "Optimization based design of an IRCC process with CO2 capture." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for industriell økonomi og teknologiledelse, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-15070.

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To deal with the threat of climate change, many technologies should be investigated, and power generation through an IRCC with CO2 capture is one alternative. However, capturing CO2 has a negative effect on the efficiency of the process as it requires a lot of energy. In this work, we try to reduce the energy consumption of an IRCC process with CO2 capture by developing a tool for finding the optimal process design with extensive heat integration.The design of an IRCC process involves many parameters which interfere in complex relationships. In this report, an MINLP model is established for op

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Rustenberg, Karin Hveding. "X-ray Studies of Capture, Storage and Release of CO2." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18889.

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We show experimentally that CO2 intercalates into the interlayer spaceof the synthetic smectite clay Li-fluorohectorite (LiFh). The intercalationoccurs for a range of conditions in terms of pressure (5 bar to 20 bar) andtemperature (-20'C to 5'C). The mean basal spacing of the clay layersin LiFh intercalated by CO2 is found to be approximately 12.0 Å.We observe that the dynamics depends on the pressure, with a higherintercalation rate at increased pressure. Even under pressure of 20 bar,intercalation of CO2 is slower than H2O intercalation in fluorohectoritesby orders of magnitu

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Symonds, Robert. "Development of a Continuous Calcium Looping Process for CO2 Capture." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36454.

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Carbon capture and storage technologies are required in order to reduce greenhouse gas emissions, while continuing to utilize existing fossil-fueled power generation stations. Of the many developing post-combustion CO2 capture technologies, calcium looping appears promising due to its high thermal efficiency, technical feasibility at commercial-scale, and low sorbent cost. Calcium looping has now been performed at the larger-scale, but there is still a significant quantity of information about sorbent performance, the fate of trace pollutant emissions (specifically SO2 and HCl), dual fluidiz

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Wangen, Dan Jakob. "Life Cycle Assessment of Power Generation Technologies with CO2 Capture." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19393.

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Carbon Capture and Storage has large a potential to mitigating the CO2 emissions caused by fossil fuel powered power plants. CCS reduces the energy efficiency of the plant and increases the demand on chemicals and infrastructure. It is though not only the direct emissions from the power plants that have an impact on the environment. The entire supply chain of the power plant has an impact, and it is therefore necessary to evaluate the entire life cycle of the plant. This thesis consists of a full process LCA of post-combustion absorption based carbon capture and storage (CCS) technologies for

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Llorente, Manso Ricardo. "CO2 capture in power plants- using the oxy-combustion principle." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-22791.

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In the CO2 capture from power generation, the energy penalties for the capture are one of the main challenges. Nowadays, the post-combustion methods have energy penalties lower than the oxy-combustion and pre-combustion technologies. One of the main disadvantages of the post-combustion method is the fact that the capture of CO2 at atmospheric pressure requires quite big equipment for the high flow rates of flue gas, and the low partial pressure of the CO2 generates an important loss of energy.The Allam cycle presented for NETPOWER gives high efficiencies in the power production and low energy

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