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DOE Co-Optima report identifies top ten bio-blendstocks for efficiency in boosted SI engines

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The blendstocks all have the potential to reduce life-cycle greenhouse gas emissions by at least 60 percent. All the top-performing blendstocks showed potential to be produced at a competitive cost. However, the team identified a number of outstanding challenges for the most promising blendstocks.

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Perspective: US Needs to Transition to Hydrous Ethanol as the Primary Renewable Transportation Fuel

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However, since the cost of the hydrous ethanol is significantly lower, hydrous ethanol will provide a lower cost per mile travelled, assuming the processing cost savings is passed on to the consumer. d) further provides for alcohol blends as follows: Special provisions for alcohol blends. (1)