What is the final form of ethanol after purification in bioethanol production?

The final form of ethanol after purification in bioethanol production is liquid fuel. During the bioethanol production process, biomass such as corn or sugarcane is fermented by yeast, converting sugars into ethanol and carbon dioxide. Post fermentation, the resulting mixture contains ethanol and various impurities, including water and unreacted sugars.

To obtain pure ethanol, several purification steps are employed, such as distillation and dehydration. These processes efficiently separate and concentrate the ethanol, leading to its final form as a highly pure liquid. This liquid form of ethanol serves as a renewable energy source and can be used directly as a fuel or blended with gasoline to create biofuels.

The other options do not pertain to the final product of purified ethanol in this context; solid waste represents leftover materials after fermentation, gas pertains to the byproducts released during fermentation, and fermented byproducts typically include non-ethanol components remaining after the fermentation process.