Which of the following processes requires an oxygen-free environment and produces large volumes of methane that can be used for fuel?
A)pasteurization
B)composting
C)centrifugation
D)anaerobic sludge digestion

Question

Quizplus · Accepted Answer

Anaerobic sludge digestion requires an oxygen-free environment for the breakdown of organic matter by bacteria, which produces large volumes of methane gas that can be used as fuel. Pasteurization, composting, and centrifugation do not require an oxygen-free environment and do not produce methane gas as a byproduct.

Which of the Following Processes Requires an Oxygen-Free Environment and Produces