Energy and Greenhouse Gas Balance of Biofuels for Europe: An Update
Biofuels can, in principle, provide a renewable source of energy and, by displacing fossil fuels, reduce greenhouse gas (GHG) emissions to the atmosphere. However, the biofuels production process itself consumes energy and emits greenhouse gases. To identify whether there are real savings in energy and GHG emissions, a careful evaluation of the field-to-tank process including by-products usage and land use emissions is needed. In 1995, CONCAWE published a report (2/95) on alternative fuels, based on an extensive literature review. This work updates the earlier report, including results from recent studies on the two main biofuels under consideration in Europe, ethanol from either wheat or sugar beet and Rapeseed Methyl Ester (RME). [via]
http://www.est.org.uk/cd/data/Library/Technic...

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