Table 4.

Summary of stoichiometric reactions of sulfide oxidized by varying terminal electron acceptors.

TEA	Stoichiometric reactions	Number
Nitrate	5HS− + $8N{O}_3^{-}$ + 3H+ → $5S{O}_4^{2-}$ + 4N2 + 4H2O	1
	FeS2 + $14N{O}_3^{-}$ + 4H+ → 7N2 + $10S{O}_4^{2-}$ + 5Fe2+ + 2H2O	2
	5Fe2+ + $N{O}_3^{-}$ + 12H2O → 5Fe(OH)3 + 1/2N2 + 9H+	3
Iron	FeS2 + 8H2O + 14Fe3+ → $2S{O}_4^{2-}$ + 15Fe2+ + 16H+	4
Arsenic	$4HAs{O}_4^{2-}$ + S2− + 4 H+ → $4H_{2}As{O}_3^{-}$ + $S{O}_4^{2-}$	5
Manganese	FeS2 + 7.5MnO2 + 11H+ → Fe(OH)3 + $2S{O}_4^{2-}$ + 7.5Mn2+ + 4H2O	6
	FeS + 1.5MnO2 + 3H+ → Fe(OH)3 + S0 + 1.5Mn2+	7