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Alcohol FuelsBiofuels, Land, and Water: A Systems Approach to SustainabilityCategory: - Documnet Type: Journal ArticleThere is a strong societal need to evaluate and understand the sustainability of biofuels, especially because of the significant increases in production mandated by many countries, including the United States. Sustainability will be a strong factor in the regulatory environment and investments in biofuels.... More» Author: Gayathri Gopalakrishnan, M. Cristina Negri, Michael Wang, May Wu, Seth W. Snyder, and Lorraine LaFreniere - submitted on Tue, 01/12/2010 - 22:20. Environmental and Sustainability Factors Associated With Next-Generation Biofuels in the U.S.: What Do We Really Know?Category: - Documnet Type: Journal ArticleIn this paper, we assess what is known or anticipated about environmental and sustainability factors associated with next-generation biofuels relative to the primary conventional biofuels (i.e., corn grain-based ethanol and soybean-based diesel) in the United States during feedstock production and conversion processes.... More» Author: Pamela R. D. Williams, Daniel Inman, Andy Aden, and Garvin A. Heath - submitted on Tue, 01/12/2010 - 20:52. The Water Footprint of Biofuels: A Drink or Drive Issue?Category: - Documnet Type: Journal ArticleEnsuring inexpensive and clean water is an overriding global challenge noted as one of the Millennium Development Goals of the United Nations.... More» Author: Rosa Dominguez-Faus, Susan E. Powers, Joel G. Burken, Pedro J. Alvarez - submitted on Tue, 01/12/2010 - 20:30. Water Embodied in Bioethanol in the United StatesCategory: - Documnet Type: Journal ArticlePrior studies have estimated that a liter of bioethanol requires 263-784 L of water from corn farm to fuel pump, but these estimates have failed to account for the widely varied regional irrigation practices. By using regional time-series agricultural and ethanol production data in the U.S., this paper estimates the state-level field-to-pump water requirement of bioethanol across the nation.... More» Author: Yi-Wen Chiu, Brian Walseth, and Sang Won Suh - submitted on Tue, 01/12/2010 - 20:23. Beneficial Biofuels—The Food, Energy, and Environment TrilemmaCategory: Biomass - Documnet Type: Journal ArticleRecent analyses of the energy and greenhouse-gas performance of alternative biofuels have ignited a controversy that may be best resolved by applying two simple principles.... More» Author: David Tilman, Robert Socolow, Jonathan A. Foley, Jason Hill, Eric Larson, Lee Lynd, Stephen Pacala, John Reilly, Tim Searchinger, Chris Somerville, Robert Williams - submitted on Thu, 09/17/2009 - 19:30. Sustainable Biofuels ReduxCategory: - Documnet Type: Journal ArticleLast May’s passage of the 2008 Farm Bill raises the stakes for biofuel sustainability: A substantial subsidy for the production of cellulosic ethanol starts the United States again down a path with uncertain environmental consequences.... More» Author: G. Philip Robertson et al. - submitted on Thu, 09/17/2009 - 19:27. Greater Transportation Energy and GHG Offsets from Bioelectricity Than EthanolCategory: - Documnet Type: Journal ArticleThe quantity of land available to grow biofuel crops without affecting food prices or greenhouse gas (GHG) emissions from land conversion is limited. Therefore, bioenergy should maximize land-use efficiency when addressing transportation and climatechange goals.... More» Author: J. E. Campbell, D. B. Lobell, C. B. Field - submitted on Thu, 09/17/2009 - 19:18. Cellulosic Biofuels—Got Gasoline?Category: - Documnet Type: Journal ArticleMost people think of ethanol as the only liquid biofuel, and that the major advances in biofuels will revolve around enzymatic conversion of cellulosic or woody biomass (including nonfood stems and stalks of corn stover or switch-grass, and wood chips) into simple fermentable sugars (1).... More» Author: John R. Regalbuto - submitted on Thu, 09/17/2009 - 19:09. Some Recent Advances in Hydrolysis of Biomass in Hot-Compressed Water and Its Comparisons with Other Hydrolysis MethodsCategory: Biomass - Documnet Type: Journal ArticleBiomass hydrolysis extracts, particularly sugars and other useful derivatives, are important products for further conversion to produce biofuels. The past 2 decades have witnessed significant research and development activities using hot-compressed water for the hydrolysis and conversion of cellulose, hemicellulose, and lignocellulosic biomass materials.... More» Author: Yun Yu, Xia Lou, and Hongwei Wu - submitted on Mon, 11/03/2008 - 18:56. Energy and Greenhouse Impacts of Biofuels: A Framework for AnalysisCategory: - Documnet Type: Technical ReportIn this paper, we review some of the basic energy balance and climate change impact issues associated with biofuels. For both the basic energy and greenhouse gas balances of producing and using a range of fuels, and for the increasingly debated and important issues of nongreenhouse gas impacts such as land, fertilizer,... More» Author: Daniel M. Kammen, Alexander E. Farrell, Richard J. Plevin, Andrew D. Jones, Gregory F. Nemet, Mark A. Delucchi - submitted on Mon, 11/03/2008 - 18:49. |
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