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Table 1

Sulfide loading rate, sulfide removal efficiency (median values) and the ratio of elemental sulfur and sulfate formed to influent sulfide

PhasesBioreactorSulfide loading rate (g S2− m−3 d−1)Sulfide removal (%)S0formed/S2−influent (%)aSO42−formed/S2−influent (%)b
1-HRT 6 h R-control 52 61 28 56 
R-air 79 41 66 
2-HRT 3 h R-control 152 22 24 20 
R-air 32 25 20 
PhasesBioreactorSulfide loading rate (g S2− m−3 d−1)Sulfide removal (%)S0formed/S2−influent (%)aSO42−formed/S2−influent (%)b
1-HRT 6 h R-control 52 61 28 56 
R-air 79 41 66 
2-HRT 3 h R-control 152 22 24 20 
R-air 32 25 20 

aRatio between the S0 mass in the effluent and S2− in the influent.

bRatio between the S mass of SO42− in the effluent and S2− in the influent.

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