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International Agriculture and Food Workshop University of Wisconsin Law School April 21, 2009 Dr. John M. Greenler
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Cellulosic (Second Generation) Biofuels: Sustainability and Food Security
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The Biofuels Ideal
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Biomass: currently 10% of global energy flow
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World Biomass Energy Flows United Nations IPCC 4 th Assessment Report ( 2007)
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C. Cleveland and R. Kaufmann, Fundamental principles of energy, 2008, Encyclopedia of Earth
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Bureau of Transportation Statistics, “Figure 14-1: U.S. Energy Consumption by Sector, 1994–2004” (2005); http://www.bts.gov/publications/transportation_statistics_annual_report/2005/html/chapter_02/figure_14_01.html
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Creating Cellulosic Biofuels What is Cellulose? Tough to Breakdown: Cellulose is the most abundant biological material on Earth
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How Cellulosic Ethanol is Made
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Plant Breeding for Greater Biofuels Potential
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Bioprospecting - Thermophiles at Yellowstone
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Long-Term Strategy for Improved Fuel/Ethanol Yields 1) Aerobic growth: optimize production of extracellular enzymes (lignocellulases) 2) Anaerobic growth: optimize production of enzymes, transporters, & pathways to funnel carbon to fuel production (ethanol, others) Improved Biomass Conversion
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Developing Improved Enzymes for Biomass Processing “Breaking the Biological Barriers to Cellulosic Ethanol: A Joint Research Agenda”, DOE
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Goal: Predict Behavior of Bioenergy Production Systems High Input, Low Diversity (annuals) Low Input, High Diversity (perennials) Continuous Corn Corn-Soybean-Canola Monoculture switchgrass Switchgrass - Legumes Early successional Native prairie Poplars Sustainable Bioenergy Practices Sustainability: Economic, Environmental and Social
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Are There Win-Win Scenarios? Ecosystem services: Food, pharmaceuticals, energy, climate regulation, pollination, nutrient cycling, recreation…
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Where Should Biofuels Crops Be Grown? - Global Perspectives
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DOE Bioenergy Research Centers (BRCs) GLBRC is one of three Bioenergy Research Centers funded by the Department of Energy to conduct transformational biofuels research
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