Introduction
Ethanol made from corn and other feed-grains has received much criticism recently for negative impacts on grain costs; although, farmers are enjoying record-high prices and more acreage is being brought into production. However, the net energy conversion efficiency when using fermentation methods is low. Therefore, alternative biofuels production technologies are now needed that can utilize agricultural residues and urban residues, rather than consuming valuable grain products that will likely become more scarce as world demand for food rises.
Program Overview for Yolo County
The subject process technology will test the use of feedstocks sourced in Yolo County, including primarily wheat and rice straw, grass straw, tomato residues, grape pumice, and urban green waste. In the long-term, coproduction of food and fuel is envisioned. A multi-year 3-Phase Research, Development, and Demonstration Program is planned as follows.
Phase I: Feasibility Demonstration:
Partners: The University of California and The California Energy Commission
Location: Wallace Ranch, A.P.N. 027230081
Time: 2008-2010 plus possible 10 yr extension
Phase II: Pilot-Plant Demonstration with participants:
Partners: UCSD, UCD, UCB, NREL, and NEXANT
Location: Wallace Ranch or Port of West Sacramento
Time: 2010-2014 plus possible extensions
Phase III: Commercial Demonstration:
Commercial Entities
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