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Certain biofuel mandates unlikely to be met by 2022; unless new technologies, policies developed
Date:10/4/2011

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In addition, achieving the renewable fuel standard would increase the federal budget outlays, mostly as a result of increased spending on grants, loans, loan guarantees, and other payments to support the development of cellulosic biofuels and foregone revenue as a result of biofuel tax credits. Moreover, nutritional and other income assistance programs are often adjusted for changes in the general price level. If food retail prices go up, expenses could increase for the Supplemental Nutrition Assistance Program and Special Supplemental Assistance Program for Women, Infants, and Children, as well as for much larger income assistance programs, such as Social Security, military and civilian retirement programs, and Supplemental Security Income Program. Nevertheless, given that biofuels are only one of many factors affecting food retail prices, it will be hard to attribute any future increases in program costs to the standard alone.

Environmental Effects

Although biofuels hold potential for providing net environmental benefits compared with using petroleum-based fuels, specific environmental outcomes from increasing biofuels production to meet the renewable fuel consumption mandate cannot be guaranteed. The type of feedstocks produced, management practices used, land-use changes that feedstock production might incur, and such site-specific details as prior land use and regional water availability will determine the mandate's environmental effects, the report says. Biofuels production has been shown to have both positive and negative effects on water quality, soil, and biodiversity. However, air-quality modeling suggests that production and use of ethanol to displace gasoline is likely to increase air pollutants such as particulate matter, ozone, and sulfur oxides. In addition, published estimates of water use over the life cycle of corn-grain ethanol are higher than petroleum-based fuels.

Barriers and Opp
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Contact: Jennifer Walsh
news@nas.edu
202-334-2138
National Academy of Sciences
Source:Eurekalert

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