Answer :
Anammox is an anaerobic process that generates energy from ammonia and nitrites from n2.
What is the anaerobic process?
Anaerobic processes occur in the lack of free or combined oxygen and result in sulfate reduction and methanogenesis. They usually produce biogas, a mixture of mostly methane and carbon dioxide, as a useful by-product and tend to generate lower amounts of biosolids (sludge) as a by-product.
Thus, ammonia and nitrites from n2.
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