Expanded ethanol production: Implications for agriculture, water demand, and water quality
2010
De La Torre Ugarte, Daniel G. | He, Lixia | Jensen, Kimberly L. | English, Burton C.
Feedstock production for large scale development of the U.S. ethanol industry and introduction of cellulose-to-ethanol technology will require extensive changes in land use and field management. Hence, this production will likely have significant impact on water demand and quality. This study compares two ‘what if’ scenarios for attaining a 227.1 hm3 of ethanol by 2030 and 3.8 hm3 of biodiesel by 2012. In the first scenario cellulose-to-ethanol technology is introduced in 2012, while in the second scenario the technology is delayed until 2015. Results show that the timing of introduction of cellulose-to-ethanol technology will affect the water use and water quality related input use in primarily in the eastern part of the nation. Results also suggest policy emphasis on reduced and no-till practices needs to be complementary to increased crop residue use.
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