Thermochemical And Sugar Routes To Ethanol And Other Alcohols From Lignocellulosic Biomass
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Thermochemical And Sugar Routes To Ethanol And Other Alcohols From Lignocellulosic Biomass
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Author : Paul-Philipp Post
language : de
Publisher:
Release Date : 2008
Thermochemical And Sugar Routes To Ethanol And Other Alcohols From Lignocellulosic Biomass written by Paul-Philipp Post and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Thermomechanical And Sugar Routes To Ethanol And Other Alcohols From Lignocellulosic Biomass
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Author : Paul-Philipp Post
language : en
Publisher:
Release Date : 2008
Thermomechanical And Sugar Routes To Ethanol And Other Alcohols From Lignocellulosic Biomass written by Paul-Philipp Post and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Thermochemical Route From Biomass To Ethanol
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Author : Jae Han
language : en
Publisher:
Release Date : 2007
Thermochemical Route From Biomass To Ethanol written by Jae Han and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Lignocellulosic Ethanol Production From A Biorefinery Perspective
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Author : Deepansh Sharma
language : en
Publisher: Springer Nature
Release Date : 2020-07-20
Lignocellulosic Ethanol Production From A Biorefinery Perspective written by Deepansh Sharma and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-07-20 with Medical categories.
This book provides an overview of the multi-dimensional approach for the production of ethanol from lignocellulosic biomass. The sustainability of this biofuel, the current and future status of the technology and its role in waste valorization are also addressed. Bioethanol from lignocellulosic material has emerged as an alternative to the traditional first-generation bioethanol. The book also discusses various pretreatment methods for effective separation of the various components of lignocellulosic feedstock as well as their advantages, and limitations. It describes the valorization of lignocellulosic waste through the production of bioethanol and emphasizes the significance of waste utilization in managing the production cost of the fuel. Finally, the utilization of genetically engineered plants and microorganisms to increase the conversion efficiency is reviewed.
Efficiency Of Biomass Energy
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Author : Krzysztof J. Ptasinski
language : en
Publisher: John Wiley & Sons
Release Date : 2016-06-07
Efficiency Of Biomass Energy written by Krzysztof J. Ptasinski and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-06-07 with Technology & Engineering categories.
Details energy and exergy efficiencies of all major aspects of bioenergy systems Covers all major bioenergy processes starting from photosynthesis and cultivation of biomass feedstocks and ending with final bioenergy products, like power, biofuels, and chemicals Each chapter includes historical developments, chemistry, major technologies, applications as well as energy, environmental and economic aspects in order to serve as an introduction to biomass and bioenergy A separate chapter introduces a beginner in easy accessible way to exergy analysis and the similarities and differences between energy and exergy efficiencies are underlined Includes case studies and illustrative examples of 1st, 2nd, and 3rd generation biofuels production, power and heat generation (thermal plants, fuel cells, boilers), and biorefineries Traditional fossil fuels-based technologies are also described in order to compare with the corresponding bioenergy systems
Lignocellulose Conversion
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Author : Vincenza Faraco
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-06-12
Lignocellulose Conversion written by Vincenza Faraco and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06-12 with Science categories.
Bioethanol has been recognized as a potential alternative to petroleum-derived transportation fuels. Even if cellulosic biomass is less expensive than corn and sugarcane, the higher costs for its conversion make the near-term price of cellulosic ethanol higher than that of corn ethanol and even more than that of sugarcane ethanol. Conventional process for bioethanol production from lignocellulose includes a chemical/physical pre-treatment of lignocellulose for lignin removal, mostly based on auto hydrolysis and acid hydrolysis, followed by saccharification of the free accessible cellulose portions of the biomass. The highest yields of fermentable sugars from cellulose portion are achieved by means of enzymatic hydrolysis, currently carried out using a mix of cellulases from the fungus Trichoderma reesei. Reduction of (hemi)cellulases production costs is strongly required to increase competitiveness of second generation bioethanol production. The final step is the fermentation of sugars obtained from saccharification, typically performed by the yeast Saccharomyces cerevisiae. The current process is optimized for 6-carbon sugars fermentation, since most of yeasts cannot ferment 5-carbon sugars. Thus, research is aimed at exploring new engineered yeasts abilities to co-ferment 5- and 6-carbon sugars. Among the main routes to advance cellulosic ethanol, consolidate bio-processing, namely direct conversion of biomass into ethanol by a genetically modified microbes, holds tremendous potential to reduce ethanol production costs. Finally, the use of all the components of lignocellulose to produce a large spectra of biobased products is another challenge for further improving competitiveness of second generation bioethanol production, developing a biorefinery.
Process Design And Economics For Conversion Of Lignocellulosic Biomass To Ethanol
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Author :
language : en
Publisher:
Release Date : 2011
Process Design And Economics For Conversion Of Lignocellulosic Biomass To Ethanol written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Biomass conversion categories.
This design report describes an up-to-date benchmark thermochemical conversion process that incorporates the latest research from NREL and other sources. Building on a design report published in 2007, NREL and its subcontractor Harris Group Inc. performed a complete review of the process design and economic model for a biomass-to-ethanol process via indirect gasification. The conceptual design presented herein considers the economics of ethanol production, assuming the achievement of internal research targets for 2012 and nth-plant costs and financing.
Handbook Of Cellulosic Ethanol
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Author : Ananda S. Amarasekara
language : en
Publisher: John Wiley & Sons
Release Date : 2013-12-23
Handbook Of Cellulosic Ethanol written by Ananda S. Amarasekara and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-12-23 with Technology & Engineering categories.
Comprehensive coverage on the growing science and technology of producing ethanol from the world's abundant cellulosic biomass The inevitable decline in petroleum reserves and its impact on gasoline prices, combined with climate change concerns, have contributed to current interest in renewable fuels. Bioethanol is the most successful renewable transport fuel—with corn and sugarcane ethanol currently in wide use as blend-in fuels in the United States, Brazil, and a few other countries. However, there are a number of major drawbacks in these first-generation biofuels, such as their effect on food prices, net energy balance, and poor greenhouse gas mitigation. Alternatively, cellulosic ethanol can be produced from abundant lignocellulosic biomass forms such as agricultural or municipal wastes, forest residues, fast growing trees, or grasses grown in marginal lands, and should be producible in substantial amounts to meet growing global energy demand. The Handbook of Cellulosic Ethanol covers all aspects of this new and vital alternative fuel source, providing readers with the background, scientific theory, and recent research progress in producing cellulosic ethanol via different biochemical routes, as well as future directions. The seventeen chapters include information on: Advantages of cellulosic ethanol over first-generation ethanol as a transportation fuel Various biomass feedstocks that can be used to make cellulosic ethanol Details of the aqueous phase or cellulolysis route, pretreatment, enzyme or acid saccharification, fermentation, simultaneous saccharification fermentation, consolidated bioprocessing, genetically modified microorganisms, and yeasts Details of the syngas fermentation or thermochemical route, gasifiers, syngas cleaning, microorganisms for syngas fermentation, and chemical catalysts for syngas-to-ethanol conversion Distillation and dehydration to fuel-grade ethanol Techno-economical aspects and the future of cellulosic ethanol Readership Chemical engineers, chemists, and technicians working on renewable energy and fuels in industry, research institutions, and universities. The Handbook can also be used by students interested in biofuels and renewable energy issues.
Techno Economic Analysis For The Thermochemical Conversion Of Lignocellulosic Biomass To Ethanol Via Acetic Acid Synthesis
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Author :
language : en
Publisher:
Release Date : 2009
Techno Economic Analysis For The Thermochemical Conversion Of Lignocellulosic Biomass To Ethanol Via Acetic Acid Synthesis written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Biomass is a renewable energy resource that can be converted into liquid fuel suitable for transportation applications. As a widely available biomass form, lignocellulosic biomass can have a major impact on domestic transportation fuel supplies and thus help meet the Energy Independence and Security Act renewable energy goals (U.S. Congress 2007). This study performs a techno-economic analysis of the thermo chemical conversion of biomass to ethanol, through methanol and acetic acid, followed by hydrogenation of acetic acid to ethanol. The conversion of syngas to methanol and methanol to acetic acid are well-proven technologies with high conversions and yields. This study was undertaken to determine if this highly selective route to ethanol could provide an already established economically attractive route to ethanol. The feedstock was assumed to be wood chips at 2000 metric ton/day (dry basis). Two types of gasification technologies were evaluated: an indirectly-heated gasifier and a directly-heated oxygen-blown gasifier. Process models were developed and a cost analysis was performed. The carbon monoxide used for acetic acid synthesis from methanol and the hydrogen used for hydrogenation were assumed to be purchased and not derived from the gasifier. Analysis results show that ethanol selling prices are estimated to be $2.79/gallon and $2.81/gallon for the indirectly-heated gasifier and the directly-heated gasifier systems, respectively (1stQ 2008$, 10% ROI). These costs are above the ethanol market price for during the same time period ($1.50 - $2.50/gal). The co-production of acetic acid greatly improves the process economics as shown in the figure below. Here, 20% of the acetic acid is diverted from ethanol production and assumed to be sold as a co-product at the prevailing market prices ($0.40 - $0.60/lb acetic acid), resulting in competitive ethanol production costs.
Thermochemical Ethanol Via Direct Gasification And Mixed Alcohol Synthesis Of Lignocellulosic Biomass
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Author :
language : en
Publisher:
Release Date : 2009
Thermochemical Ethanol Via Direct Gasification And Mixed Alcohol Synthesis Of Lignocellulosic Biomass written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
This report evaluates process design and technoeconomic criteria for a direct gasification process for conversion of biomass to ethanol. Follow-up to NREL/TP-510-41168.