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Dissertations / Theses on the topic 'Lignocellulose pretreatments'

Author: Grafiati

Published: 29 June 2023

Last updated: 31 July 2025

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1

Munns, Craig Christopher Robert. "Development of physio-chemical pretreatments and mixed microbial cultures for the conversion of lignocellulosic biomass to useful products." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28768.

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There is increasing interest in producing biofuels; biofuels are preferable to fossil fuels as the biomass from which they are derived is seen as a renewable source, as opposed to fossil fuels which are a finite resource. “First Generation” biofuels are derived from food crops such as grains and sugar cane. The use of food crops is not sustainable in this age of increasing food insecurity. A promising alternative appears to be what is termed “Second Generation” feedstocks, such as energy crops like Miscanthus spp., and agricultural by-products. The problem with the use of second generation fee

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2

Badalato, Nelly. "Structure de déchets lignocellulosiques : effets sur la colonisation, les communautés microbienne et les performances de méthanisation, caractérisés par des approches fonctionnelles et haut-débit." Electronic Thesis or Diss., Paris, AgroParisTech, 2014. http://www.theses.fr/2014AGPT0002.

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La méthanisation des composés lignocellulosiques présente un fort intérêt en raison de leur haut potentiel énergétique et de leur abondance, notamment dans les ordures ménagères résiduelles. Toutefois, leur complexité de structure et de composition rend ces matériaux difficilement dégradables en conditions anaérobies et l’utilisation de prétraitements est généralement requise afin d’améliorer leurs rendements de biodégradation. Outre l’effet de ces prétraitements sur la biodégradation de ces composés, la colonisation des lignocelluloses par les micro-organismes cellulolytiques est une étape cl

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3

Monlau, Florian. "Application of pretreatments to enhance biohydrogen and/or biomethane from lignocellulosic residues : linking performances to compositional and structural features." Thesis, Montpellier 2, 2012. http://www.theses.fr/2012MON20178/document.

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Dans le futur, différentes sources d'énergies renouvelables comme les énergies de seconde génération produites à partir de déchets lignocellulosiques seront nécessaires pour palier à l'épuisement des énergies fossiles. Parmi ces énergies de seconde génération, le biohydrogène, le méthane et l'hythane produits à partir de procédés fermentaires anaérobies représentent des alternatives prometteuses. Cependant la production de biohydrogène et de méthane à partir de résidus lignocellulosiques est limitée par leurs structures récalcitrantes et une étape de prétraitement en amont des procédés ferment

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4

Cheng, Wei. "Pretreatment and enzymatic hydrolysis of lignocellulosic materials." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=1951.

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Thesis (M.S.)--West Virginia University, 2001.<br>Title from document title page. Document formatted into pages; contains xii, 173 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 138-142).

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5

Warsame, Mohamed. "Saccharification of lignocellulose." Thesis, Malmö högskola, Fakulteten för hälsa och samhälle (HS), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-25910.

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Den ökande efterfrågan på energi och den förväntade nedgången i råoljeproduktion har lett till ett enormt sökande efter nya energikällor.Cellväggen i växter består till stor del av lignocellulosa som i sin tur innehåller cellulosa och hemicellulosa. Dessa polysackarider är av stor betydelse för sökandet efter förnyelsebar energi.Cellväggen måste förbehandlas innan den kan brytas ner till enkla sockerarter. Efter nedbrytning kan monosackariderna användas till produktion av etanol eller biogas genom väl etablerade fermenteringstekniker. Syftet med denna studie var att jämföra och utvärdera någr

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6

Brandt, Agnieszka. "Ionic liquid pretreatment of lignocellulosic biomass." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/9166.

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This thesis is concerned with the thermal treatment of lignocellulosic biomass using ionic liquids for the purpose of comminution via dissolution, for fractionating the biological composite and for obtaining aqueous solutions of carbohydrate monomers from the pulp via enzymatic hydrolysis. A major focus was the relationship between the choice of the anion and the effectiveness of the treatment. The synthesis of a range of 1-butyl-3-methylimidazolium ionic liquids with strongly hydrogen-bond basic anions was accomplished. Selected, process-relevant physicochemical properties were measured, such

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7

Corredor, Deisy Y. "Pretreatment and enzymatic hydrolysis of lignocellulosic biomass." Diss., Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/693.

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8

Kvillborn, Carin. "Enzymatic Pretreatment of Lignocellulose Rich Waste for Improved Biogas Production." Thesis, Linköpings universitet, Tema vatten i natur och samhälle, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-104974.

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The present study aimed to investigate the methane yield from anaerobic digestion of a lignocellulosic substrate subjected to different pretreatments. The lignocellulosic forest residues materials were milled and then pretreated with the organic solvent NMMO (N-Methylmorpholine N-oxide) and/or the lignolytic enzymes laccase and versatile peroxidase at a dosage of 60 U g-1 total solids (TS) substrate. The amount of methane produced was studied in a biomethane potential assay with inocula from a thermophilic biogas reactor treating municipal waste. All samples were run in triplicates. Due to the

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9

Narayana, Swamy Naveen. "Supercritical Carbon Dioxide Pretreatment of Various Lignocellulosic Biomasses." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1269524607.

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10

Moxley, Geoffrey W. "Studies of Cellulosic Ethanol Production from Lignocellulose." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/43372.

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At present, the worldâ s transportation sector is being principally supplied by fossil fuels. However, energy consumption in this sector is drastically increasing and there are concerns with supply, cost, and environmental issues with the continuing use of fossil fuels. Utilizing non-petroleum ethanol in the transportation sector reduces the dependence on oil, and allows for cleaner burning of gasoline. <p> Lignocellulose materials are structurally composed of five types of polymeric sugars, glucan, galactan, mannan, arabinan, and xylan. NREL has developed a quantitative saccharification

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11

Sierra, Ramirez Rocio. "Long-term lime pretreatment of poplar wood." Texas A&M University, 2005. http://hdl.handle.net/1969.1/3316.

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Lignocellulosic biomass (e.g., poplar wood) provides a unique and sustainable resource for environmentally safe organic fuels and chemicals. The core of this study is the pretreatment step involved in bioconversion processes. Pretreatment is required to realize high yields vital to commercial success. The focus of the pretreatment step is to methodically change key features of the biomass to favor enzymatic hydrolysis. This work assesses the compositional changes due to oxidative and non-oxidative longterm lime pretreatment of poplar wood (up to 4 weeks of pretreatment) at mild temperatures (2

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12

Schneider, L. (Laura). "Mechanocatalytic pretreatment of lignocellulosic barley straw to reducing sugars." Doctoral thesis, Oulun yliopisto, 2017. http://urn.fi/urn:isbn:9789526216478.

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Abstract Biomass conversion methods represent bioeconomic solutions for the sustainable production of value added commodities (chemicals and materials) as well as for energy purposes, either in solid (pellets), liquid (transport fuels) or gaseous (combustion gases e.g. biomethane) form. Lignocellulosic biomass as a renewable source available in immense quantity, is considered to be one of the most promising natural sources, with high potential in the replacement of conventional transportation fuels and reduction of greenhouse gas emissions. This thesis provides new insights into mechanocatalys

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13

Kitsos, Haralambos Minas. "Swelling pretreatment of lignocellulosic materials to promote enzymatic hydrolysis." Thesis, Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/11780.

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14

Siddaramu, Thara Gejjalagere. "EVALUATION OF DIFFERENT PRETREATMENT APPROACHES FOR DISRUPTING LIGNOCELLULOSIC STRUCTURES." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/703.

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AN ABSTRACT OF THE THESIS OF Thara G. Siddaramu, for the Master of Science degree in Civil and Environmental Engineering, presented on February 5, 2011, at Southern Illinois University Carbondale. TITLE: EVALUATION OF DIFFERENT PRETREATMENT APPROACHES FOR DISRUPTING LIGNOCELLULOSIC STRUCTURES MAJOR PROFESSOR: Dr. Yanna Liang There are two major steps in biofuel production- pretreatment of lignocellulosic materials and enzymatic hydrolysis. The present study investigated the ability of two pretreatment methods, namely traditional oven and microwave oven treatments for disrupting lignocellulosic

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15

Mancini, Gabriele. "Different approaches to enhance the biogas production from the anaerobic digestion of lignocellulosic materials." Thesis, Paris Est, 2017. http://www.theses.fr/2017PESC1250/document.

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La production de biogaz par digestion anaérobie (DA) est une technologie renouvelable de longue date et un bioprocessus en croissance continue. Les matériaux lignocellulosiques (ML) présentent plusieurs caractéristiques qui les rendent particulièrement attrayants parmi les substrats couramment employés dans les bioréacteurs anaérobies. En particulier, les ML sous la forme de résidus agricoles ont été reconnus comme la matière première la plus appropriée pour la production de biométhane en raison de leur haute disponibilité, de leur faible coût, de leur durabilité et de leur absence de concurre

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16

Du, Bowen Chambliss C. Kevin. "Effect of varying feedstock-pretreatment chemistry combinations on the production of potentially inhibitory degradation products in biomass hydrolysates." Waco, Tex. : Baylor University, 2009. http://hdl.handle.net/2104/5319.

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17

Ricciotti, Federica. "Plasma based pretreatments of lignocellulosic biomass for Biogas and Bioethanol production." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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The aim of this project provides the use of a lignocellulosic biomass microbubble reactor in order to analyse the pre-treatment of cellulose and maize for, respectively, Bioethanol and Biogas production. Because of lignin recalcitrance, dielectric barrier discharge plasma is used to improve the solubility and accessibility of these feedstock. The novel reactor combined with this plasma source generates highly oxidative species (O3, H2O2, and OH radicals) close to the gas-liquid interface. The cellulose has been treated under different conditions such as treatment time (30 min, 60 min, 90 min a

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18

Moharreri, Ehsan. "Optimization, Scale Up and Modeling CO2-Water Pretreatment of Guayule Biomass." University of Akron / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=akron1313013654.

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19

Ruffell, John. "Pretreatment and hydrolysis of recovered fibre for ethanol production." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/1369.

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Energy utilization is a determining factor for the standards of living around the world, and the current primary source of energy is fossil fuels. A potential source of liquid fuels that could ease the strain caused by diminishing petroleum resources is bioethanol. Effective exploitation of biomass materials requires a pretreatment to disrupt the lignin and cellulose matrix. The pretreatment utilized for this research was oxygen delignification, which is a standard process stage in the production of bleached chemical pulp. The model substrate utilized as a feedstock for bioethanol was recover

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20

Teghammar, Anna. "Biogas Production from Lignocelluloses : Pretreatment, Substrate Characterization, Co-digestion and Economic Evaluation." Doctoral thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-3654.

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Biogas production from organic materials can be used as a renewable vehicle fuel, provide heat and generate electricity and can thereby reduce the greenhouse gas emissions. This thesis focuses on the biogas production based on lignocelluloses. There is an abundant availability of lignocelluloses, constituting 50% of the total biomass worldwide. However, the biomass recalcitrance limits the microbial degradation as well as the biogas production from these types of materials. In the present work different pretreatment methods have been performed in order to decrease the biomass recalcitrance and

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21

Avery, Greg M. "A Life Cycle Assessment of Ionic Liquid Pretreatment for Lignocellulosic Biomass." University of Toledo / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1481273168926691.

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22

Periyasamy, Karthik. "Production de bioéthanol à partir de biomasse lignocellulosique en utilisant des enzymes cellulolytiques immobilisées." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAI024/document.

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L'objectif global de cette étude était de produire du bioéthanol à partir de biomasse lignocellulosique en utilisant des enzymes libres ou immobilisées de type xylanase, cellulase et β-1,3-glucanase. L'isolement de la souche AUKAR04 de Trichoderma citrinoviride a permis de produire par fermentation solide ces trois enzymes à un taux de 55 000, 385 et 695 UI / gd, respectivement. L’activité biochimique des enzymes libres a été caractérisée en faisant varier différents paramètres : pH, température et concentration en cations métalliques, et les paramètres cinétiques correspondants ont été identi

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23

Auer, Lucas. "Vers la maîtrise des communautés microbiennes lignocellulolytiques : impact de la source d'inoculum et du prétraitement du substrat sur le fonctionnement des communautés." Thesis, Toulouse, INSA, 2016. http://www.theses.fr/2016ISAT0050/document.

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La lignocellulose est le composant principal des parois végétales et donc le biopolymère végétal le plus abondant sur Terre. Sa transformation en molécules d’intérêt industriel est donc une voie prometteuse pour diminuer la consommation de ressources fossiles. Au sein de la plateforme des carboxylates, la transformation de la lignocellulose repose sur l’utilisation de communautés bactériennes. Mais s’ils sont augmentés par des approches de prétraitement du substrat, les rendements sont encore faibles. Afin de les améliorer, nous avons ici testé les capacités de dégradations de communautés micr

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24

Loku, Umagiliyage Arosha. "PRETREATMENT OF SWEET SORGHUM BAGASSE TO IMPROVE ENZYMATIC HYDROLYSIS FOR BIOFUEL PRODUCTION." OpenSIUC, 2013. https://opensiuc.lib.siu.edu/theses/1259.

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With recent emphasis on development of alternatives to fossil fuels, sincere attempts are being made on finding suitable lignocellulosic feedstocks for biochemical conversion to fuels and chemicals. Sweet Sorghum is among the most widely adaptable cereal grasses, with high drought resistance, and ability to grow on low quality soils with low inputs. It is a C4 crop with high photosynthetic efficiency and biomass yield. Since sweet sorghum has many desirable traits, it has been considered as an attractive feedstock. Large scale sweet sorghum juice extraction results in excessive amounts of wast

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25

Orejuela, Lourdes Magdalena. "Lignocellulose deconstruction using glyceline and a chelator-mediated Fenton system." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/81255.

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Non-edible plant biomass (lignocellulose) is a valuable precursor for liquid biofuels, through the processes of pretreatment and saccharification followed by fermentation into products such as ethanol or butanol. However, it is difficult to gain access to the fermentable sugars in lignocellulose, and this problem is principally associated with limited enzyme accessibility. Hence, biomass pretreatments that destroy native cell wall structure and allows enzyme access are required for effective biomass conversion techniques. This research studied two novel pretreatment methods on two wood species

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26

Kim, Tae Hyun Lee Yoon Y. "Bioconversion of lignocellulosic material into ethanol pretreatment, enzymatic hydrolysis, and ethanol fermentation /." Auburn, Ala., 2004. http://repo.lib.auburn.edu/EtdRoot/2004/FALL/Chemical_Engineering/Dissertation/KIM_TAE_24.pdf.

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27

Yan, Lishi. "Kinetic characterization of hot water and dilute acid pretreatment of lignocellulosic biomass." Thesis, Washington State University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3628899.

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<p> Acidic aqueous-phase pretreatment is a promising approach that has been directed at maximizing intermediates yields (e.g. sugars, sugar degradation products, and lignin) from biomass for fuel and chemical production. This dissertation explores the kinetic fundamentals of biomass hydrolysis in acidic aqueous-phase with different catalysts (e.g. sulfuric acid, metal chlorides), operating conditions (e.g. temperature, time pressure), and equipment configurations (e.g. batch, flowthough). </p><p> The kinetic analysis revealed that crystalline cellulose is insusceptible to hydrolysis compare

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28

Sathitsuksanoh, Noppadon. "Lignocellulose Saccharification via Cellulose Solvent Based Fractionation Followed by Enzymatic Hydrolysis: the Last Obstacle to Integrated Biorefineries." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/77259.

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The production of biofuels and biobased products from low-cost abundant renewable non-food lignocellulosic biomass will be vital to sustainable development because it will bring benefits to the environment, the economy, and the national security. The largest technical and economic challenge for emerging biorefineries is cost-effective release of fermentable sugars from recalcitrant structure of lignocellulosic biomass. Cellulose- and organic-solvent-based lignocelluloses fractionation (COSLIF) technology was employed to overcome biomass recalcitrance. Surface response methodology (SRM) showed

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29

Hassanpour, Morteza. "Biorefining of sugarcane bagasse based on acid-catalysed glycerol pretreatment." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/207573/1/Morteza_Hassanpour_Thesis.pdf.

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The thesis investigated biorefining of sugarcane bagasse into value-added products. A glycerol-based fractionation method was developed at laboratory and pilot scales to convert sugarcane bagasse into fermentable sugar and high-quality lignin. The fermentable sugar was used for microbial oil production with applications in biofuel, biochemical, food and feed industries. The generated lignin had physico-chemical properties suitable for biochemical and polymer production. The thesis proposes methods to generate new revenue streams for Australian sugarcane industry.

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30

Aghazadeh, Mahdieh. "The Effect of Different Lignocellulosic Biomass and Different Pretreatment Methods on Cellulase Activity." Fogler Library, University of Maine, 2011. http://www.library.umaine.edu/theses/pdf/AghazadehM2011.pdf.

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31

Wang, Yumei [Verfasser], Antje [Akademischer Betreuer] Spieß, and Jochen [Akademischer Betreuer] Büchs. "Interaction of Solvents and Mechanical Pretreatment with Enzymatic Lignocellulose Hydrolysis / Yumei Wang ; Antje Spieß, Jochen Büchs." Aachen : Universitätsbibliothek der RWTH Aachen, 2017. http://d-nb.info/1162498846/34.

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Tan, Xin. "Effect of Organosolv Lignin and Extractable Lignin on Enzymatic Hydrolysis of Lignocelluloses." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1613752000022518.

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33

Wiermans, Lotte [Verfasser], Walter [Akademischer Betreuer] Leitner, and Martina [Akademischer Betreuer] Pohl. "Oxidative pretreatment and biocatalytic valorization of lignocellulosic biomass / Lotte Wiermans ; Walter Leitner, Martina Pohl." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/112733705X/34.

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34

Carey, Bobby D. Jr. "FIELD IMPLEMENTATION OF PHANEROCHAETE CHRYSOSPORIUM BIOMASS PRETREATMENT: FUNGAL IDENTIFICATION AND INOCULATION TECHNIQUES." UKnowledge, 2014. http://uknowledge.uky.edu/bae_etds/25.

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Scaling biological pretreatment from the bench scale to the production scale may be more economical if unsterilized feedstock are used, however these allow for microbial competition from contaminates. An accurate and rapid method for identifying the desired biological pretreatment organism is necessary to confirm the presence of the desired organism when contaminates are morphologically similar to the target organism. Traditional methods, such as visual identification, sequencing, and selective plating can be time consuming and are sometimes still inconclusive. Based on methods described in th

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35

Aslanzadeh, Solmaz. "Pretreatment of cellulosic waste and high rate biogas production." Doctoral thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-3684.

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The application of anaerobic digestion technology is growing worldwide, mainly because of its environmental benefits. Nevertheless, anaerobic degradation is a rather slow and sensitive process. One of the reasons is the recalcitrance nature of certain fractions of the substrate (e.g., lignocelluloses) used for microbial degradation; thus, the hydrolysis becomes the rate-limiting step. The other reason is that the degradation of organic matter is based on a highly dynamic, multi-step process of physicochemical and biochemical reactions. The reactions take place in a sequential and parallel way

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36

Simon, William E. "INVESTIGATION OF PHANEROCHAETE CHRYSOSPORIUM AND CLOSTRIDIUM THERMOCELLUM FOR IMPROVED SACCHARIFICATION OF LIGNOCELLULOSE UNDER NONSTERILE CONDITIONS." UKnowledge, 2015. http://uknowledge.uky.edu/bae_etds/35.

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Current research efforts are directed at developing competitive processes that can utilize lignocellulose as a feedstock for biorefineries. The purpose of this study was to investigate methods of processing lignocellulosic material so that its monosacharides can be more easily accessed for fermentation, the lack of which is hindering the economics and widescale adoption of lignocellulosic biorefining. The monosaccharides are of interest because they can be used by Clostridium beijerinckii downstream of P. chrysosporium and C. thermocellum in a sequential bioprocess to produce butanol. Butanol

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Dong, Y. (Yue). "Bifunctionalised pretreatment of lignocellulosic biomass into reducing sugars:use of ionic liquids and acid-catalysed mechanical approach." Doctoral thesis, Oulun yliopisto, 2017. http://urn.fi/urn:isbn:9789526216775.

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Abstract Lignocellulosic biomass is the most abundant renewable raw material on the earth and it is so far the most suitable and promising resource for the production of biofuels to replace long-term use of fossil oil. This research aims to convert lignocellulose-based industrial residuals, fibre sludge (FS) from a pulp mill and pine sawdust (PSD) from a sawmill, into platform sugars by two different bifunctionalised pretreatments of lignocellulosic biomass. The bifunctionalised pretreatment combines the ordinary pretreatment (deconstruction) of lignocellulosic biomass with lignocellulosic pol

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Kato, Dawn M. "APPLICATIONS OF GAS CHROMATOGRAPHY/MASS SPECTROMETRY AND CAPILLARY ELECTROPHORESIS FOR THE ANALYSIS OF LIGNOCELLULOSIC BIOMASS PRETREATMENT." UKnowledge, 2014. http://uknowledge.uky.edu/chemistry_etds/45.

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The focus of this dissertation centers on the development and applications of gas chromatography/mass spectrometry and capillary electrophoresis methodologies to quantify monomeric compositions of the β-O-4 linkages in lignin. Pretreatment is a required step in the utilization of lignocellulosic biomass for biofuels. Lignin is the target of pretreatment because it hinders the accessibility of enzymes and chemicals to cellulose. The effects of pretreatment are commonly assessed utilizing enzymatic saccharification and lignin assays. However, these techniques do not elucidate the effects of pret

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39

Wan, Caixia. "Microbial Pretreatment of Lignocellulosic Biomass with Ceriporiopsis Subvermispora for Enzymatic Hydrolysis and Ethanol Production." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1299689015.

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40

Ponnaiyan, Thehazhnan Konguvel Ponnaiyan. "Aspects Critical to Advancing Ionic Liquid Pretreatment Technique as a Viable Approach for Lignocellulosic Biomass Conversion." University of Toledo / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1471652917.

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Yavas, Sinem. "Conversion Of Lignocellulosic Biomass Into Nanofiber By Microfluidization And Its Effect On The Enzymatic Hydrolysis." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612340/index.pdf.

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Lignocellulosic biomass is under extensive investigation as a bioethanol and bio-based materials feedstock. However, the complex structural and chemical mechanisms of lignocellulosic plant, which cause resistance to deconstruction during saccharification, require a pretreatment process. In this study, raw materials (corn bran, wheat bran and wheat straw) were selected because of their production and consumption in Turkey and also their accessibilities to be used as bioethanol source. Microfluidization pretreatment (high-pressure fluidization), which stands as a new approach for nano-cellulosic

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Ketsub, Napong. "Development of an integrated process for biogas production from sugarcane trash." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/235046/1/Napong_Ketsub_Thesis.pdf.

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This project is the systematic study on how to utilise sugarcane trash for biogas production using an integrated process. A suitable pretreatment for sugarcane trash preparation was successfully developed and a key microbial response was identified during anaerobic digestion of the pretreated sugarcane trash. Moreover, the pretreatment and anaerobic digestion process was designed to integrate with hydrothermal carbonisation to utilise anaerobic digestion residue for further improvement of process performance. Biogas production was improved via the proposed integrated process, which has the abi

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Chang, Chen-Wei. "Bioconversion of sugarcane bagasse and soybean hulls for the production of a generic microbial feedstock." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/bioconversion-of-sugarcane-bagasse-and-soybean-hulls-for-the-production-of-a-generic-microbial-feedstock(0144bdd8-5444-468d-9f0f-50613a79be67).html.

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Lignocellulose, mostly from agricultural and forestry resources, is a potential renewable material for sustainable development of biorefineries. From previous studies, reducing sugar production through biological pretreatment involves two steps: solid-state fermentation (SSF) for delignification, followed by enzymatic hydrolysis by adding celluloytic enzymes (cellulase and xylanase etc.). In the process described in this thesis, the necessary enzymes are produced in-situ and the hydrolysis proceeds directly after the solid-state fermentation. Enzyme hydrolysis releases free amino nitrogen (FAN

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Mubazangi, Munyaradzi. "Optimization of the conversion of lignocellulosic agricultural by-products to bioethanol using different enzyme cocktails and recombinant yeast strains." Thesis, Stellenbosch : Stellenbosch University, 2011. http://hdl.handle.net/10019.1/6891.

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Thesis (MSc)--Stellenbosch University, 2011.<br>ENGLISH ABSTRACT: The need to mitigate the twin crises of peak oil and climate change has driven a headlong rush to biofuels. This study was aimed at the development of a process to efficiently convert steam explosion pretreated (STEX) sugarcane bagasse into ethanol by using combinations of commercial enzyme cocktails and recombinant Saccharomyces cerevisiae strains. Though enzymatic saccharification is promising in obtaining sugars from lignocellulosics, the low enzymatic accessibility of the cellulose and hemicellulose is a key impediment

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Yoo, Juhyun. "Technical and economical assessment of thermo-mechanical extrusion pretreatment for cellulosic ethanol production." Diss., Kansas State University, 2011. http://hdl.handle.net/2097/9190.

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Doctor of Philosophy<br>Department of Grain Science and Industry<br>Sajid Alavi<br>The Renewable Fuel Standard (RFS) in the Energy Independence and Security Act of 2007 has set the goal of 36 billion gallons of annual ethanol production in the U.S. by 2022, which is equivalent to 17.5% of the current gasoline consumption in the U.S. However, corn ethanol is expected to plateau at a level of 7.3% of current gasoline consumption on an energy-equivalent basis. Thus, it is essential to utilize a variety of substrates including lignocellulosic biomass from perennial energy crops such as switch gras

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Reynolds, Wienke [Verfasser]. "Modeling and scale-up of hydrothermal pretreatment in compressible lignocellulosic biomass fixed-beds with changing properties / Wienke Reynolds." München : Verlag Dr. Hut, 2019. http://d-nb.info/1192567641/34.

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Pachón-Morales, John Alexander. "Torrefaction and grinding of lignocellulosic biomass for its thermochemical valorization : influence of pretreatment conditions on powder flow properties." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLC051.

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Une technologie prometteuse pour répondre à la demande croissante en énergie renouvelable est la gazéification de biomasse lignocellulosique pour la production de biocarburants de deuxième génération. Ce procédé nécessite une alimentation en biomasse sous forme de poudre. Les problèmes de convoyage et de manipulation liés à la faible coulabilité de la biomasse broyée sont un verrou pour l’industrialisation des procédés BtL. La torréfaction comme procédé de prétraitement, en plus d'augmenter densité énergétique de la biomasse, peut influencer également les propriétés des particules obtenues apr

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Ishola, Mofoluwake M. "Novel application of membrane bioreactors in lignocellulosic ethanol production : simultaneous saccharification, filtration and fermentation (SSFF)." Doctoral thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-3705.

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Biofuels production and utilisation can reduce the emission of greenhouse gases, dependence on fossil fuels and also improve energy security. Ethanol is the most important biofuel in the transportation sector; however, its production from lignocelluloses faces some challenges. Conventionally, lignocellulosic hydrolysis and fermentation has mostly been performed by separate hydrolysis and fermentation (SHF) or simultaneous saccharification and fermentation (SSF). SHF results in product inhibition during enzymatic hydrolysis and increased contamination risk. During SSF, suboptimal conditions are

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Lennartsson, Patrik. "Zygomycetes and cellulose residuals : hydrolysis, cultivation and applications." Doctoral thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-3608.

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Zygomycetes is a class of fungi living worldwide as saprobes, as part of mycorrhizae, and as parasites. Humans have used some zygomycetes for centuries in the production of traditional foods, e.g. Indonesian tempe. In the present thesis, the experimental focus was on two zygomycetes strains, Mucor indicus CCUG 22424 and Rhizopus sp. IT. One of the distinguishing features of M. indicus is its dimorphism. The different cell forms were influenced by the culturing conditions. After inoculation, when the initial spore concentration was high (6-8×106 spores/ml), yeast-like growth dominated under ana

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Lee, Jungeun. "Sustainable Production of Microbial Lipids from Renewable Biomass: Evaluation of Oleaginous Yeast Cultures for High Yield and Productivity." Diss., Kansas State University, 2017. http://hdl.handle.net/2097/35300.

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Doctor of Philosophy<br>Department of Grain Science and Industry<br>Praveen V. Vadlani<br>Microbial lipids derived from oleaginous yeasts are a promising alternative source of edible oils due to the following advantages: no requirement of broad lands; availability of year-round production; and no food versus fuels controversy. Oleaginous yeast has an inherent ability to accumulate lipids inside cells and their lipids are preferable as starting materials in oleo-chemical industries because of their distinct fatty acid composition. Lignocellulosic biomass is a promising substrate to supply carbo

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