5 Questions
What is the goal set by the U.S. Department of Energy for substituting gasoline with biofuels by 2030?
30%
Why must ethanol be distilled 2× before use?
To remove water
How is ethanol primarily produced for use as a biofuel?
By microbial fermentation of plant starches in corn
What is one disadvantage of using crop residues (waste material) to ferment cellulose for biofuel production?
Increased pesticide and fertilizer use
Why is ethanol considered to have drawbacks as a biofuel?
It absorbs water and can’t be shipped through existing pipelines
Test your knowledge about future energy demands and the shift towards biofuels. Learn about the impact of population growth, economic development, and the finite nature of fossil fuels on energy requirements.
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