There are multiple terminal electron acceptors: There are multiple terminal electron acceptors: 2NO 3 - + 12H + + 10e - = N 2 + 6H 2 O FeOOH + 3H + + e - = Fe 2+ + 2H 2 O SO 4 2- + 10H + + 8e - = H 2 S + 4H 2 O
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