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Challenges for biofuels: New life cycle assessment report from Energy Biosciences Institute
Date:2/9/2011

A combination of rising costs, shrinking supplies, and concerns about global climate change are spurring the development of alternatives to the burning of fossil fuels to meet our transportation energy needs. Scientific studies have shown the most promising of possible alternatives to be liquid fuels derived from cellulosic biomass. These advanced new biofuels have the potential to be clean-burning, carbon-neutral and renewable. Some could also be delivered through existing pipelines and used in today's engines, replacing gasoline on a gallon-for-gallon basis with no loss of performance.

That is the promise of advanced biofuels and the focus to date has been on the technological challenges of producing high quality biofuels in a way that is both sustainable and economically competitive with gasoline. In addition to the technological challenges, however, there are also important social, economic and environmental challenges that must be addressed.

"These challenges include constraints imposed by economics and markets, resource limitations, health risks, climate forcing, nutrient cycle disruption, water demand, and land use," says Thomas McKone, an expert on health risk assessments who holds a joint appointment with the Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) at Berkeley. "Responding to these challenges effectively requires a life-cycle perspective."

McKone is the lead author of a report titled "Grand Challenges for Life-Cycle Assessment of Biofuels," which was funded by a grant from the Energy Biosciences Institute (EBI), a partnership between UC Berkeley, Berkeley Lab, the University of Illinois, and the BP energy corporation. This report summarizes seven grand challenges that "must be confronted" to enable life-cycle assessments that effectively evaluate the environmental footprint of biofuel alternatives.

Co-authoring this EBI report with McKone were William Nazaroff,
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Contact: Lynn Yarris
lcyarris@lbl.gov
510-486-5375
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

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