The EROEI for Ethanol Has Been Estimated to Be Between

question 117

Multiple Choice

The EROEI for ethanol has been estimated to be between 1.67:1 to 0.78:1. Which of the following is NOT a reason for the low ethanol EROEI values?

• A) Ethanol has a lower fuel content than petroleum fuels.
• B) Large amounts of energy are required to distill the ethanol after it is formed.
• C) Some ethanol is changed to methane (CH₄) during the distillation process, so less ethanol is recovered.
• D) Ethanol is not easily available.

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