Willow trees could be used for ethanol under proposed biofuel rules
from Reuters via Fortune
The Environmental Protection Agency proposed tweaks to its Renewable Fuel Standard that would allow biofuels to be processed at more than one location and would allow cellulosic ethanol to be made from poplar and willow trees. EPA also proposed new quality standards and environmental performance guidelines for biofuel blends containing 16 to 83 percent ethanol, and the agency is taking comments on the proposal for the next 60 days before it is approved.
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