Download or read book Transportation Biofuels written by Alwin Hoogendoorn and published by Royal Society of Chemistry. This book was released on 2011 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current world fossil oil production is struggling to meet demand and may even show a decline after 2010. It is therefore necessary to develop new energy-efficient production pathways for transportation biofuels. This book offers an insight into three promising and innovative pathways for the biological production of ethanol, biogas and biodiesel. These unconventional methods should provide higher product yields, less stringent feedstock specifications, lower chemical additive demand, reduced waste production and much better energy balances when compared to more traditional methods. One pathway concerns the enzymatic production of a new kind of biodiesel where no glycerol waste is produced and an up to twenty percent higher product yield is obtained. The other two pathways are based on the biological conversion of syngas into ethanol or methane using various kinds of lignocellulosic biomass as the starting point. For each of the three pathways a comparison will be made with competing production methods. The contents reflect extended desktop research and show practical experimental results. Government scientists, academics and biofuel producers with an interest in novel transportation fuels will all find this book to be essential reading.

Download or read book Routes to Cellulosic Ethanol written by Marcos Silveira Buckeridge and published by Springer Science & Business Media. This book was released on 2011-01-07 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: The perception that civilization is crossing a period of Global Climatic Changes that can seriously threaten our lifestyle, along with energy security and the search for prosperity, are the main drivers that are pushing men to use more biomass as a source of energy. It will be crucial that such intent will include a large parcel of sustainability so that more renewable energy becomes available for populations. Because large amounts of energy are “hidden” in carbon polymers made by plants, notably carbohydrates, it is obvious that if technologies are developed to produce liquid fuels such as ethanol from carbohydrate polymers such as cellulose, men could significantly increase energy sustainability . This book reviews general aspects of biomass utilization for bioenergy production as well as strategies using biochemistry, molecular biology, chemistry and physics to disassemble plant cell walls. Recent discoveries of basic science under development in several laboratories in the world are reviewed by experts that have been intensively working with many aspects that will impact the development of the technology of production of cellulosic ethanol.

Download or read book Biomass to Ethanol Pathways written by Sabrina Spatari and published by . This book was released on 2007 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ethanol derived from lignocellulose (biomass) is a promising alternative to petroleum-based fuels for light-duty vehicle transportation; in particular, because it represents a near-term liquid fuel that is renewable, domestically produced, requires moderate infrastructure changes, and has the potential to significantly reduce greenhouse gas emissions. This thesis investigates environmental and energy impacts of a set of emerging lignocellulosic ethanol technologies using life cycle assessment and statistical methods to characterize the potential performance and development of those technologies. A set of emerging pretreatment methods are investigated in combination with near-term saccharification and co-fermentation and mature consolidated bioprocessing technologies for producing ethanol from lignocellulose. Results from the research show that relative to gasoline vehicles, lignocelulose-based ethanol fuelled vehicles in blends with 15% reformulated gasoline (by volume) can reduce greenhouse gas emissions by between 25% and 130% per kilometre driven depending upon the feedstock and conversion technology selected. Furthermore, the analysis shows the potential for displacing between 9% and 40% of U.S. annual gasoline demand, and more than 100% of Canadian annual gasoline demand over the next 20 years. A major finding is the impact of co-product allocation: when electricity co-product credits are incorporated into model designs, technologies with low ethanol yield and high electricity yield are preferred from an emissions and energy perspective. However, this finding depends strongly on whether the electricity co-product is displacing mostly coal-based existing electricity facilities, and it is likely that producing larger amounts of ethanol fuels to displace gasoline will help reduce fossil and petroleum energy, and greenhouse gas emissions from light-duty vehicle transportation, as well as contribute to energy security goals for the sector. This thesis demonstrates how systems-based analytical models that measure the full set of environmental tradeoffs associated with emerging fuel technologies are essential inputs to guide decision making and policies for the next generation of transportation energy infrastructure.

Download or read book Routes to Cellulosic Ethanol written by Marcos Silveira Buckeridge and published by Springer. This book was released on 2011-01-13 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: The perception that civilization is crossing a period of Global Climatic Changes that can seriously threaten our lifestyle, along with energy security and the search for prosperity, are the main drivers that are pushing men to use more biomass as a source of energy. It will be crucial that such intent will include a large parcel of sustainability so that more renewable energy becomes available for populations. Because large amounts of energy are “hidden” in carbon polymers made by plants, notably carbohydrates, it is obvious that if technologies are developed to produce liquid fuels such as ethanol from carbohydrate polymers such as cellulose, men could significantly increase energy sustainability . This book reviews general aspects of biomass utilization for bioenergy production as well as strategies using biochemistry, molecular biology, chemistry and physics to disassemble plant cell walls. Recent discoveries of basic science under development in several laboratories in the world are reviewed by experts that have been intensively working with many aspects that will impact the development of the technology of production of cellulosic ethanol.

Download or read book Reaction Pathways and Mechanisms in Thermocatalytic Biomass Conversion II written by Marcel Schlaf and published by Springer. This book was released on 2015-10-30 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume II presents the latest advances in catalytic hydrodeoxygenation and other transformations of some cellulosic platform chemicals to high value-added products. It presents the theoretical evaluation of the energetics and catalytic species involved in potential pathways of catalyzed carbohydrate conversion, pathways leading to the formation of humin-based by-products, and thermal pathways in deriving chemicals from lignin pyrolysis and hydrodeoxygenation. Catalytic gasification of biomass under extreme thermal conditions as an extension of pyrolysis is also discussed. Marcel Schlaf, PhD, is a Professor at the Department of Chemistry, University of Guelph, Canada. Z. Conrad Zhang, PhD, is a Professor at the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, China.

Download or read book Sustainability of biogas and cassava based ethanol value chains in Viet Nam written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2018-07-02 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of the implementation of the GBEP indicators to two key bioenergy pathways in Viet Nam: cassava-based ethanol and biogas at household, farm and industrial levels. The environmental, social and economic impacts of these two pathways are discussed, and recommendations are provided on how to improve their sustainability, efficiency and competitiveness. This work provided Viet Nam with an understanding of how to establish the means of a long-term, periodic monitoring of its domestic bioenergy sector based on the GBEP indicators. Such periodic monitoring would enhance the knowledge and understanding of this sector and more generally of the way in which the contribution of the agricultural and energy sectors to national sustainable development could be evaluated. The implementation of the GBEP indicators in Viet Nam also provided a series of lessons learnt about how to apply them as a tool for sustainable development and how to enhance their practicality.

Download or read book Technologies to produce liquid biofuels for transportation An overview written by Schwaiger, H., Pena, N., Mayer, A., Bird, D.N. and published by CIFOR. This book was released on 2011-01-01 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advanced Biofuels written by Juan Carlos Serrano-Ruiz and published by CRC Press. This book was released on 2015-05-27 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title includes a number of Open Access chapters.Sustainability demands that we meet the needs of our present world without compromising the needs of future generations. As a result, sources and methodologies for renewable energy are being urgently investigated. Biomassoffers one of the most readily implemented, low-cost alternatives to fossil

Download or read book Lignocellulosic Biomass to Liquid Biofuels written by Abu Yousuf and published by Academic Press. This book was released on 2019-11-20 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lignocellulosic Biomass to Liquid Biofuels explores the existing technologies and most recent developments for the production of second generation liquid biofuels, providing an introduction to lignocellulosic biomass and the processes for its conversion into biofuels. The book demonstrates biorefinery concepts compared with petro refinery, as well as the challenges of second generation biofuels processing. In addition to current pre-treatment techniques and their technical, environmental and economic implications, chapters included also further examine the particularities of conversion processes for bioethanol, biobutanol and biodiesel through chemical, biochemical and combined approaches. Finally, the book looks into concepts and tools for techno-economic and environmental analysis, which include supply chain assessment, by-products, zero-waste techniques and process evaluation and optimization. Lignocellulosic Biomass to Liquid Biofuels is particularly useful for researchers in the field of liquid biofuels seeking alternative chemical and biochemical pathways or those interested advanced methods to calculate maximum yield for each process and methods to simulate the implications and costs of scaling up. Furthermore, with the introduction provided by this volume, researchers and graduate students entering the field will be able to quickly get up to speed and identify knowledge gaps in existing and upcoming technology the book's comprehensive overview. - Examines the state-of-the-art technology for liquid biofuels production from lignocellulosic biomass - Provides a comprehensive overview of the existing chemical and biochemical processes for second generation biofuel conversion - Presents tools for the techno-economic and environmental analysis of technologies, as well as for the scale-up simulation of conversion processes

Download or read book Biomass to Biofuels written by Alain A. Vertes and published by John Wiley & Sons. This book was released on 2011-08-24 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on the key challenges that still impede the realization of the billion-ton renewable fuels vision, this book integrates technological development and business development rationales to highlight the key technological.developments that are necessary to industrialize biofuels on a global scale. Technological issues addressed in this work include fermentation and downstream processing technologies, as compared to current industrial practice and process economics. Business issues that provide the lens through which the technological review is performed span the entire biofuel value chain, from financial mechanisms to fund biotechnology start-ups in the biofuel arena up to large green field manufacturing projects, to raw material farming, collection and transport to the bioconversion plant, manufacturing, product recovery, storage, and transport to the point of sale. Emphasis has been placed throughout the book on providing a global view that takes into account the intrinsic characteristics of various biofuels markets from Brazil, the EU, the US, or Japan, to emerging economies as agricultural development and biofuel development appear undissociably linked.

Download or read book Advances in 2nd Generation of Bioethanol Production written by Xin Lu and published by Woodhead Publishing. This book was released on 2021-01-13 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in 2nd Generation of Bioethanol Production presents a comprehensive overview of technologies and strategies for the conversion of lignocellulosic biomass. This includes issues like sustainable production, environmental and economic benefits, and the main hurdles for upscaling and achieving commercial viability. The book assesses the current biomass conversion technologies, their readiness level for commercial production, and applications of bioethanol in bioenergy and chemical feedstock. The essential conversion process of 2nd generation biofuels, including feedstock composition and pretreatment, is then broken down, with special focus on advantages and pitfalls of each feedstock and process. It also explores the advances and challenges of bioprocessing, hydrolysis technologies and simultaneous fermentation of pentose and hexose. Finally, it presents the current status and bottlenecks for industrial production of bioethanol, as well as its future prospects. Its interdisciplinary approach, drawing upon plant biology, chemistry, biochemistry, microbiology, and genetics, makes Advances in 2nd Generation of Bioethanol Production a must-have reference for researchers in academia and industry R&D. It allows them to compare challenges and opportunities of new technologies and identify the gaps where new technology is needed. Practitioners in the industry also benefit from the information on working principles, design and control of the bioethanol production process, highlighting areas where technology innovation and investment should be placed. Graduate students and researchers newly entered in this field find here a key-resource to thoroughly understand the process as well as the fundamentals of bioethanol and bioproducts production from lignocellulosic biomass. - Presents fundamentals and state-of-the-art of available pathways for bioethanol and bioproducts production from lignocellulosic biomass - Discusses key-challenges for large scale production of bioethanol, such as pretreatment and hydrolysis - Covers the specificities of various feedstocks and processes, the role of microorganisms in fermentation, saccharification limitations and challenges in the C5 and C6 fermentation

Download or read book Negative Emissions Technologies and Reliable Sequestration written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2019-04-08 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: To achieve goals for climate and economic growth, "negative emissions technologies" (NETs) that remove and sequester carbon dioxide from the air will need to play a significant role in mitigating climate change. Unlike carbon capture and storage technologies that remove carbon dioxide emissions directly from large point sources such as coal power plants, NETs remove carbon dioxide directly from the atmosphere or enhance natural carbon sinks. Storing the carbon dioxide from NETs has the same impact on the atmosphere and climate as simultaneously preventing an equal amount of carbon dioxide from being emitted. Recent analyses found that deploying NETs may be less expensive and less disruptive than reducing some emissions, such as a substantial portion of agricultural and land-use emissions and some transportation emissions. In 2015, the National Academies published Climate Intervention: Carbon Dioxide Removal and Reliable Sequestration, which described and initially assessed NETs and sequestration technologies. This report acknowledged the relative paucity of research on NETs and recommended development of a research agenda that covers all aspects of NETs from fundamental science to full-scale deployment. To address this need, Negative Emissions Technologies and Reliable Sequestration: A Research Agenda assesses the benefits, risks, and "sustainable scale potential" for NETs and sequestration. This report also defines the essential components of a research and development program, including its estimated costs and potential impact.

Download or read book Advances of Basic Science for Second Generation Bioethanol from Sugarcane written by Marcos S. Buckeridge and published by Springer. This book was released on 2017-03-10 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the basic science recently produced in Brazil for the improvement of sugarcane as a bioenergy crop and as a raw material for 2nd generation bioethanol production. It reports achievements that have been advancing the science of cell walls, enzymes, genetics, and sustainability related to sugarcane technologies and give continuity to the research reported in the “Routes to Cellulosic Ethanol”, from Springer. The Introduction (Chapter I) explains how the National Institute of Science and Technology of Bioethanol, founded in 2008 in Brazil, became part of the main international initiatives that started to search for forms to use biomass for bioethanol production in Brazil, US and Europe. Part I reports the advances in plant cell wall composition, structure and architecture, and physical characteristics of sugarcane biomass. These discoveries are opening the way to increased efficiency of pretreatments and hydrolysis, being therefore important information for 2nd generation processes as well as for biorefinery initiatives. Part II focuses on the discovery and characterization of hydrolases from microorganisms that could be used in industrial processes. Recent advances in the search for hydrolases using metagenomics is reported. A great number of genes and enzymes from microorganisms have been discovered, affording improvement of enzyme cocktails better adapted to sugarcane biomass. Part III reports two key issues in the process of 2G ethanol, pentose fermentation and sugarcane genetics. These are the discoveries of new yeast species capable of producing ethanol more efficiently from xylose and the advances made on the sugarcane genetics, a key issue to design varieties adapted to 2G ethanol production. Part IV approaches sustainability through two chapters, one discussing the sustainability of the sugarcane agricultural and environmental system and another discussing how national and mainly international policies of Brazil regarding 2G ethanol production affected the country’s strategies to establish itself as an international player in renewable energy area.

Download or read book Evolutionary Pathways to Biofuels for Transport written by and published by . This book was released on 2005 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Process Design and Economics for Conversion of Lignocellulosic Biomass to Ethanol written by and published by . This book was released on 2011 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Gasoline Diesel and Ethanol Biofuels from Grasses and Plants written by Ram B. Gupta and published by Cambridge University Press. This book was released on 2010-04-19 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world is currently faced with two significant problems: fossil fuel depletion and environmental degradation, which are continuously being exacerbated due to increasing global energy consumption. As a substitute for petroleum, renewable fuels have been receiving increasing attention due a variety of environmental, economic, and societal benefits. The first-generation biofuels - ethanol from sugar or corn and biodiesel from vegetable oils - are already on the market. The goal of this book is to introduce readers to second-generation biofuels obtained from non-food biomass, such as forest residue, agricultural residue, switch grass, corn stover, waste wood, municipal solid wastes, and so on. Various technologies are discussed, including cellulosic ethanol, biomass gasification, synthesis of diesel and gasoline, bio-crude by hydrothermal liquefaction, bio-oil by fast pyrolysis, and the upgradation of biofuel. This book strives to serve as a comprehensive document presenting various technological pathways and environmental and economic issues related to biofuels.

Download or read book Lignocellulose Conversion written by Vincenza Faraco and published by Springer Science & Business Media. This book was released on 2013-06-12 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.