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Relevant bibliographies by topics / Biomass energy. Hydrogen Biomass gasification. Pyrolysis / Dissertations / Theses

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Dissertations / Theses on the topic 'Biomass energy. Hydrogen Biomass gasification. Pyrolysis'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Zhang, Ling. "Sunlight Ancient and Modern: the Relative Energy Efficiency of Hydrogen from Coal and Current Biomass." Thesis, Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/submitted/etd-08182004-145924/unrestricted/zhang%5Fling%5F200412%5Fmast.pdf.

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Thesis (M.S.)--Chemical Engineering, Georgia Institute of Technology, 2005.<br>Jones, Christopher, Committee Member ; White, David, Committee Member ; Teja, Amyn, Committee Member ; Realff, Matthew, Committee Chair. Includes bibliographical references.

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2

Newalkar, Gautami. "High-pressure pyrolysis and gasification of biomass." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53917.

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With the limited reserves of fossil fuels and the environmental problems associated with their use, the world is moving towards cleaner, renewable, and sustainable sources of energy. Biomass is a promising feedstock towards attaining this goal because it is abundant, renewable, and can be considered as a carbon neutral source of energy. Syngas can be further processed to produce liquid fuels, hydrogen, high value chemicals, or it can be converted to heat and power using turbines. Most of the downstream processing of syngas occurs at high pressures, which requires cost intensive gas compression

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3

Alevanau, Aliaksandr. "Study of pyrolysis and gasification of biomass from the self-organization perspective." Doctoral thesis, KTH, Tillämpad processmetallurgi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-162109.

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This thesis focuses on the analysis of kinetics of i) low-temperature pyrolysis of gaseous hydrocarbons, ii) high-temperature steam gasification of char of wood pellets (>700oC), iii) high temperature pyrolysis of straw pellets in an atmosphere of argon and steam, and iv) high temperature pyrolysis of slices of transversally cut wooden sticks. The results of the kinetic measurements in the high-temperature cases are approximated using a least-square based optimization software, which was specially developed to analyse kinetics prone for deviation from the Arrhenius law.In the thesis a gener

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4

Efika, Emmanuel Chidi. "Hydrogen rich syngas from the pyrolysis and gasification of solid waste and biomass." Thesis, University of Leeds, 2013. http://etheses.whiterose.ac.uk/4943/.

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Biomass and wastes are potential resources for the production of renewable hydrogen, synthetic fuels, chemicals and energy via pyrolysis and gasification. Waste biomass and refuse derived fuel (RDF), and their single components were investigated for pyrolysis to produce a hydrogen rich syngas with a bench scale fixed bed reactor. The samples were pyrolysed at different temperatures, heating rates and particle sizes to recover syngas, oil and char products. The waste biomass was investigated for steam pyrolysisgasification in a continuous screw kiln reactor to produce hydrogen. The samples were

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5

Pozzobon, Victor. "Biomass gasification under high solar heat flux." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2015. http://www.theses.fr/2015EMAC0004/document.

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L'énergie solaire concentrée est une source d'énergie alternative pour la conversion thermochimique de biomasse en vecteurs énergétiques ou en matériaux à haute valeur ajoutée. La production d'un gaz de synthèse à partir de biomasse lignocellulosique en est un exemple, de même que la production de résidus carbonés à propriétés contrôlées. Ces travaux portent sur l'étude du comportement d'un échantillon de hêtre thermiquement épais sous de hautes densités de flux solaire (supérieures à 1000 kW/m²). Deux approches ont été développées en parallèles : une étude expérimentale et le développement d'

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6

PERSNIA, YOSRA. "Thermogravimetric analysis and modeling of pyrolysis of macroscopic wood particles." Thesis, KTH, Skolan för kemivetenskap (CHE), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-190841.

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The knowledge of kinetics of pyrolysis is important. It is also challenging to find parameters for kinetic which can be applied at different sizes of biomass. Many researchers have been investigating the pyrolysis behavior of wood powders due to heat and mass transfer limitations. They have also been focusing on determining the effects of feedstock characterization, residence time, gas environment, heating rate and the final temperature as well as the arrangement of the pyrolysis reactor and modeling of the kinetics. This project presents a qualitative understanding of the pyrolysis process ba

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7

Bojler, Görling Martin. "Energy system evaluation of thermo-chemical biofuel production : Process development by integration of power cycles and sustainable electricity." Doctoral thesis, KTH, Energiprocesser, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-105814.

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Fossil fuels dominate the world energy supply today and the transport sector is no exception. Renewable alternatives must therefore be introduced to replace fossil fuels and their emissions, without sacrificing our standard of living. There is a good potential for biofuels but process improvements are essential, to ensure efficient use of a limited amount of biomass and better compete with fossil alternatives. The general aim of this research is therefore to investigate how to improve efficiency in biofuel production by process development and co-generation of heat and electricity. The work ha

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Donaj, Pawel. "Conversion of biomass and waste using highly preheated agents for materials and energy recovery." Doctoral thesis, KTH, Energi- och ugnsteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-34253.

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One of the greatest challenges of human today is to provide the continuous and sustainable energy supply to the worldwide society. This shall be done while minimizing all the negative consequences of the operation(s) to the environment and its living habitants including human beings, taking from the whole life cycle perspective. In this thesis work new solutions for treatment biomass and waste are analyzed. Based on the fundamental research on the conversion of various materials (biomass: straw pellets, wood pellets; and waste: plastic waste, ASR residues after pyrolysis), converted by means

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9

Guan, Tingting. "Biomass-fuelled PEM FuelCell systems for small andmedium-sized enterprises." Doctoral thesis, KTH, Energiprocesser, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-176633.

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Biomass-fuelled proton exchange membrane fuel cells (PEMFCs) offer asolution for replacing fossil fuel for hydrogen production. Through using thebiomass-derived hydrogen as fuel, PEMFCs may become an efficient andsustainable energy system for small and medium-sized enterprises. The aim ofthis thesis is to evaluate the performance and potential applications of biomassfuelledPEMFC systems which are designed to convert biomass to electricity andheat. Biomass-fuelled PEMFC systems are simulated by Aspen plus based ondata collected from experiments and literature.The impact of the quality of the h

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10

Mate, Marc. "Numerical Modelling of Wood Pyrolysis." Thesis, KTH, Skolan för kemivetenskap (CHE), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-206852.

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In this project, a numerical model describing the reaction mechanism and the mass and energy transport in wood pyrolysis is studied. The applicability of the model in predicting actual biomass pyrolysis assessed by comparing the model to TGA experimental measurements. The comparison to experiments is done in relation to the mass loss characteristics of chips of varying sizes. The mass loss is of interest as it is a variable necessary in the coupling of reactor and particle models. Three reaction models were simulated and results compared to experimental data, namely, the reaction model develop

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11

Richardson, Yohan. "Nouvelles stratégies catalytiques pour la gazéification de la biomasse : génération in-situ de nanoparticules à base de nickel ou de fer au cours de l'étape de pyrolyse." Thesis, Montpellier 2, 2010. http://www.theses.fr/2010MON20098.

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L'objectif de ce travail est d'étudier une stratégie catalytique originale, consistant à insérer par imprégnation, au sein de la matrice lignocellulosique du bois, un sel métallique de Ni ou Fe, dont les phases catalytiquement actives pour la conversion des goudrons sont générées in-situ au cours de l'étape de pyrolyse. La caractérisation des échantillons de bois imprégné révèle que l'insertion des cations métalliques fait intervenir des mécanismes d'adsorption électrostatique, d'échange ionique et de complexation au sein des hémicelluloses, de la lignine et des microfibrilles de cellulose, as

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12

Lemonon, Jérôme. "Valorisations énergétique et matière du revêtement de sol stratifié par pyrolyse & gazéification." Thesis, Université de Lorraine, 2013. http://www.theses.fr/2013LORR0338/document.

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Depuis quelques temps, les enjeux énergétiques ne cessent d’apparaître en tête de liste des préoccupations actuelles pour l’avenir. La fin annoncée des énergies fossiles, à l’origine de 80% de celle que nous consommons aujourd’hui, s’accompagne naturellement par la recherche d’alternatives pour subvenir aux besoins futurs. L’intégration d’une dimension environnementale pour la mise en œuvre d’un développement durable met clairement en avant les atouts des énergies dites renouvelables qui concernent de nos jours moins de 15% de la production mondiale. Le travail proposé ici s’inscrit dans ce ca

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13

Baumlin, Sébastien. "Craquage thermique des vapeurs de pyrolyse-gazéification de la biomasse en réacteur parfaitement auto-agité par jets gazeux." Thesis, Vandoeuvre-les-Nancy, INPL, 2006. http://www.theses.fr/2006INPL041N/document.

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ALes gaz issus des procédés de pyrolyse-gazéification de la biomasse doivent être épurés. Ils contiennent des vapeurs condensables (goudrons), des aérosols, des particules solides fines, des composés soufrés et des métaux alcalins qu’il s’agit d’éliminer avant leur utilisation sur des turbines (production d’électricité) ou comme gaz de synthèse. Les expériences rapportées dans ce travail concernent les vapeurs condensables et leur conversion par craquage thermique. Les vapeurs sont produites par pyrolyse de la biomasse dans un premier réacteur (RP) à 540°C. Elles sont ensuite craquées dans un

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14

Sarkar, Susanjib. "Hydrogen production from biomass." Master's thesis, 2009. http://hdl.handle.net/10048/398.

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Thesis (M. Sc.)--University of Alberta, 2009.<br>Title from pdf file main screen (viewed on July 10, 2009). "A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science, Department of Mechanical Engineering, University of Alberta." Includes bibliographical references.

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15

Abuadala, Abdussalam Goma. "Investigation of sustainable hydrogen production from steam biomass gasification." Diss., 2010. http://hdl.handle.net/10155/130.

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Hydrogen is a by-product of the gasification process and it is environmentally friendly with respect to pollution and emission issues when it is derived from a CO2-neutral resource such as biomass. It is an energy carrier fuel and has flexibility to convert efficiently to other energy forms to be used in different energy applications like fuel cells. The proposed research presents literature on previous gasification studies regarding hydrogen production from biomass and updates the obtained results. The main objectives of the thesis are: a) to study hydrogen production via steam biomass (sawdu

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16

Acharya, Bishnu, and Bishnu Acharya. "CHEMICAL LOOPING GASIFICATION OF BIOMASS FOR HYDROGEN-ENRICHED GAS PRODUCTION." 2011. http://hdl.handle.net/10222/14255.

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Environmental concerns and energy security are two major forces driving the fossil fuel based energy system towards renewable energy. In this context, hydrogen is gaining more and more attention in this 21st century. Presently, hydrogen is produced from reformation of fossil fuels, a process that could not address above two problems. For this it needs to be produced from a renewable carbon neutral energy source. Biomass has been identified as such a renewable energy source. Conversion of biomass through thermo-chemical gasification process in the presence of steam could provide a viable renewa

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17

Cohce, Mehmet Kursad. "Thermodynamic performance assessment of three biomass-based hydrogen production systems." Thesis, 2010. http://hdl.handle.net/10155/88.

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Hydrogen is likely to be an important energy carrier in the future. It can be produced by the steam reforming of natural gas, coal gasification and water electrolysis among other processes. However current processes are not sustainable because they use fossil fuels or electricity from non-renewable resources. In this context, this thesis focuses on biomass based-hydrogen production and considers three plants intended for sustainable producing hydrogen using. These three systems are analyzed thermodynamically using Aspen Plus and their performances are examined and compared in regards to hydrog

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18

Sandeep, Kumar. "Expermental and Modeling Studies on the Generation of Hydrogen Rich Syngas through Oxy-Steam Gasification of Biomass." Thesis, 2016. http://hdl.handle.net/2005/3144.

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The present work focuses on the study of biomass gasification process for generating hydrogen rich synthetic gas with oxy-steam as reactants using experiments and modeling studies. Utilization of the syngas as a fuel in general applications like fuel cells, Fischer-Tropsch FT) process and production of various chemicals like DME, etc. are being considered to meet the demand for clean energy. This study comprises of experiments using an open top down draft reactor with oxygen and steam as reactants in the co-current configuration. Apart from the standard gasification performance evaluation; pa

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19

Mahapatra, Sadhan. "Experiments And Analysis on Wood Gasification in an Open Top Downdraft Gasifier." Thesis, 2016. http://etd.iisc.ernet.in/handle/2005/2685.

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The thesis, through experimental and numerical investigations reports on the work related to packed bed reactors in co-current configuration for biomass gasification. This study has extensively focused on the gasification operating regimes and addressing the issues of presence of tar, an undesirable component for engine application. Systematically, the influence of fuel properties on the gasification process has been studied using single particle analysis and also in packed bed reactors. Studies related to the effect of fuel properties - size, surface area volume ratio and density on the react

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20

Ewang, Derick Samjeila. "Feasibility study for a 300kW pilot scale hydrogen production process from wood biomass : The case of Sandviksverket, Växjö." Thesis, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-96894.

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Historically, fossil fuel sources (coal, oil and natural gas) have played significant role in meet global energy demand. As global population continue to rise, more and more energy resources are needed and there is a continuous depletion of these energy resources. The prices of these fuels have often fluctuated over the years and this has greatly affected the economy of several nations. The use of these fossil-based fuels has had enormous impact on the environment. This is as a result carbon dioxide and other greenhouse gases emissions. Many nations are continuously showing great interest and

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21

Zhang, Linghong. "CATALYTIC SUPERCRITICAL WATER GASIFICATION OF SEWAGE SLUDGE/SECONDARY PULP/PAPER-MILL SLUDGE FOR HYDROGEN PRODUCTION." Thesis, 2011. http://hdl.handle.net/1974/7612.

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Supercritical water gasification (SCWG) is an innovative hydrothermal technique, employing supercritical water (SCW, T≥374oC, P≥22.1 MPa) as the reaction media, to convert wet biomass or aqueous organic waste directly into hydrogen (H2)-rich synthetic gas (syngas). In the first stage of this research, a secondary pulp/paper-mill sludge (SPP, provide by AbitibiBowater Thunder Bay Operations) was gasified at temperatures of 400-550oC for 20 to 120 min in a high-pressure batch reactor for H2 production. The highest H2 yield achieved was 14.5 mol H2/kg SPP (on a dry basis) at 550oC for 60 min. In

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22

Ólafsson, Brynjólfur Víðir. "The technical potential of renewable natural gas (RNG) in the United States, and the economic potential of methanation-derived RNG in Texas." Thesis, 2014. http://hdl.handle.net/2152/28281.

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Renewable Natural Gas (RNG) is a low-carbon fuel source that is derived from the anaerobic digestion (AD) or thermal gasification (TG) of biomass, or produced using renewable electricity through the methanation of carbon dioxide. This thesis uses a thermodynamic balance to determine the total technical potential of RNG in the United States, as well as the future technical potential of methanation-derived RNG based on growth curves for renewable electricity. Furthermore, this work establishes an analytic decision-making framework for determining on a rolling basis, from an economic standpoint,

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