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Author: Vincenza Faraco Publisher: Springer Science & Business Media ISBN: 3642378617 Category : Science Languages : en Pages : 207
Book Description
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.
Author: Vincenza Faraco Publisher: Springer Science & Business Media ISBN: 3642378617 Category : Science Languages : en Pages : 207
Book Description
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.
Author: Anuj Chandel Publisher: BoD – Books on Demand ISBN: 9535111191 Category : Technology & Engineering Languages : en Pages : 288
Book Description
This book provides important aspects of sustainable degradation of lignocellulosic biomass which has a pivotal role for the economic production of several value-added products and biofuels with safe environment. Different pretreatment techniques and enzymatic hydrolysis process along with the characterization of cell wall components have been discussed broadly. The following features of this book attribute its distinctiveness: This book comprehensively covers the improvement in methodologies for the biomass pretreatment, hemicellulose and cellulose breakdown into fermentable sugars, the analytical methods for biomass characterization, and bioconversion of cellulosics into biofuels. In addition, mechanistic analysis of biomass pretreatment and enzymatic hydrolysis have been discussed in details, highlighting key factors influencing these processes at industrial scale.
Author: Sudhir P. Singh Publisher: Elsevier ISBN: 0128198214 Category : Technology & Engineering Languages : en Pages : 481
Book Description
Advances in Enzyme Catalysis and Technologies intends to provide the basic structural and functional descriptions, and classification of enzymes. The scientific information related to the recombinant enzyme modifications, discovery of novel enzymes and development of synthetic enzymes are also presented. The translational aspects of enzyme catalysis and bioprocess technologies are illustrated, by emphasizing the current requirements and future perspectives of industrial biotechnology. Several case studies are included on enzymes for biofuels application, micro algal biorefineries, high-value bioactive molecules production and enzymes for environmental processes, such as enzymatic bioprocessing for functional food development, biocatalytic technologies for the production of functional sweetener, etc. - Provides a conceptual understanding of enzyme catalysis, enzyme engineering, discovery of novel enzymes, and technology perspectives - Includes comprehensive information about the inventions and advancement in enzyme system development for biomass processing and functional food developmental aspects - Gives an updated reference for education and understanding of enzyme technology
Author: Sunita Varjani Publisher: Elsevier ISBN: 032398472X Category : Technology & Engineering Languages : en Pages : 472
Book Description
Circular Bioeconomy: Technologies for Waste Remediation covers information about the strategies and approaches facilitating the integration of technologies for wastewater and solid waste remediation. The book highlights the models developed to valorize wastes to produce biobased products. Various chapters presented in the book put a focus on sustainability approaches as a central theme in order to facilitate industries and policymakers to adopt circular economy goals. Since the principal idea of a circular bioeconomy is to transition from a linear economy, it involves advanced technological and designing breakthroughs to reduce waste with a closed looped system. - Covers the integration of technologies and processes for waste remediation - Narrates recent developments and perspectives on value added products from wastes - Summarizes recent developments in lifecycle assessment and techno economic analysis using wastes for sustainable development - Offers academicians, engineers, researchers and stakeholders help in adapting suitable technologies for solid waste and wastewater management
Author: Deepak K. Tuli Publisher: Elsevier ISBN: 0128218967 Category : Technology & Engineering Languages : en Pages : 416
Book Description
Current Status and Future Scope of Microbial Cellulases not only explores the present and future of cellulase production, it also compares solid state fermentation (SSF) and submerged fermentation (SMF) for cellulase production. Chapters explore bioprocess engineering, metabolic engineering and genetic engineering approaches for enhanced cellulase production, including the application of cellulase for biofuel production. This important resource presents current technical status and the future direction of advances in cellulase production, including application of cellulases in different sectors. - Covers the present industrial scenarios and future prospect of cellulase production - Describes the molecular structure of cellulase - Explores genetic engineering, metabolic engineering and other approaches for improved cellulase production - Includes different applications of cellulases, including their application in the bioenergy sector
Author: Wilfred Cote Publisher: Springer Science & Business Media ISBN: 1475708335 Category : Science Languages : en Pages : 720
Book Description
This proceedings volume represents the culmination of nearly three years of planning, organizing and carrying out of a NATO Ad vanced Study Institute on Biomass Utilization. The effort was initi ated by Dr. Harry Sobel, then Editor of Biosources Digest, and a steering committee representing the many disciplines that this field brings together. . When the fiscal and logistical details of the original plan could not be worked out, the idea was temporarily suspended. In the spring of 1982, the Renewable Materials Institute of the State University of New York at the College of Environmental Science and Forestry in Syracuse, New York revived the plan. A number of modifications had to be made, including the venue which was changed from the U.S.A. to Portugal. Additional funding beyond the basic support provided by the Scientific Affairs Division of NATO had to be obtained. Ul timately there were supplementary grants from the Foundation for Microbiology and the Anne S. Richardson Fund to assist student participants. The New York State College of Forestry Foundation, Inc. provided major support through the Renewable Ma terials Institute. The ASI was held in Alcabideche, Portugal from September 26 to October 9, 1982. Eighty participants including fifteen principal lecturers were assembled at the Hotel Sintra Estoril for the program that was organized as a comprehensive course on biomass utilization. The main lectures were supplemented by relevant short papers offered by the participants.
Author: Donald E. Kirk Publisher: Courier Corporation ISBN: 0486135071 Category : Technology & Engineering Languages : en Pages : 466
Book Description
Upper-level undergraduate text introduces aspects of optimal control theory: dynamic programming, Pontryagin's minimum principle, and numerical techniques for trajectory optimization. Numerous figures, tables. Solution guide available upon request. 1970 edition.
Author: Zhen Fang Publisher: Springer ISBN: 9811041725 Category : Science Languages : en Pages : 481
Book Description
This book provides state-of-the-art reviews, the latest research, prospects and challenges of the production of platform chemicals such as C6 sugars, 5-hydroxymethylfurfural, furfural, gamma-valerolactone, xylitol, 2,5-furandicarboxylic acid, levulinic acid, ethanol and others from sustainable biomass resources using processes that include heterogeneous catalysis, ionic liquids, hydrothermal/solvothermal, electrochemical and fermentation methods. It also discusses the application of these chemicals and their derivatives for synthesizing commodity chemicals via various routes. Intended as a reference resource for researchers, academicians and industrialists in the area of energy, chemical engineering and biomass conversion, it provides a wealth of information essential for assessing the production and application of various biomass-derived platform chemicals using biological, chemical and electrochemical techniques.
Author: Reeta Rani Singhania Publisher: CRC Press ISBN: 1003851827 Category : Science Languages : en Pages : 197
Book Description
This reference book provides advanced knowledge about lignocellulosic biomass production and its application in biomass hydrolysis. Lignocellulosic biomass is the most abundant, ubiquitous, and renewable raw material in the world. Though biomass can be deconstructed by other means, biological ways through enzymes are eco-friendly and sustainable. Biomass Hydrolyzing Enzymes: Basics, Advancements, and Applications discusses the different enzymes used for degrading biomass into its monomeric components. It covers important topics like biorefineries, hydrolysis of algal mass, kinetic modelling for hydrolysis, inhibitory effects, and more. Key Features Highlights recent developments in biorefineries, specific enzymes, inhibitor tolerance, and enhanced efficiencies Provides details on various kinds of biomass hydrolysis including algal biomass Includes the best practices for getting economic and efficient high conversions of biomass Covers strategies to be adopted for increasing the production of highly efficient enzymes Explores the advancements in lignocellulosic biomass hydrolysis The book is suitable for researchers and students in biotechnology, applied microbiology, and environmental sciences.
Author: Pratima Bajpai Publisher: Springer ISBN: 9789811006869 Category : Technology & Engineering Languages : en Pages : 0
Book Description
The book describes the pretreatment of lignocellulosic biomass for biomass-to-biofuel conversion processes, which is an important step in increasing ethanol production for biofuels. It also highlights the main challenges and suggests possible ways to make these technologies feasible for the biofuel industry. The biological conversion of cellulosic biomass into bioethanol is based on the chemical and biological breakdown of biomass into aqueous sugars, for example using hydrolytic enzymes. The fermentable sugars can then be further processed into ethanol or other advanced biofuels. Pretreatment is required to break down the lignin structure and disrupt the crystalline structure of cellulose so that the acids or enzymes can easily access and hydrolyze the cellulose. Pre-treatment can be the most expensive process in converting biomass to fuel, but there is great potential for improving the efficiency and lowering costs through further research and development. This book is aimed at academics and industrial practitioners who are interested in the higher production of ethanol for biofuels.
Author: Vincenza Faraco
Author: Vincenza Faraco
Author: Anuj Chandel
Author: Sudhir P. Singh
Author: Sunita Varjani
Author: Deepak K. Tuli
Author: Wilfred Cote
Author: Donald E. Kirk
Author: Zhen Fang
Author: Reeta Rani Singhania
Author: Pratima Bajpai