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Bioenergy by Anju Dahiya

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Chapter 9

Life-Cycle Assessment

The Energy Return on Invested of Biodiesel

Eric L. Garza     Rubenstein School of Environment and Natural Resources, University of Vermont, Burlington, VT, USA

Abstract

High oil prices are driving renewed interest in biofuels, including biodiesel in the hope that it can substitute for petroleum-derived diesel. Although many criteria must be used to determine whether these biofuels offer benefits over their fossil fuel-derived counterparts, the primary criteria must be that the biofuels are able to generate an energy surplus, defined as a positive energy return on energy invested (EROI). A literature review of biodiesel EROI yields estimates that vary widely, from those below the energy-break-even point of 1:1 to those ...

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