Methods and apparatus are disclosed for remediating sulfur-containing pollutants with a hydrocarbon that is used to stimulate the growth of hydrocarbon-utilizing bacteria. The hydrocarbon is preferably an alkane such as butane. The sulfur-containing pollutant may comprise sulfate, sulfite, sulfide, disulfides, mercaptans, alkanesulfonates, dialkyl sulfides, thiosulfate, thiofurans, thiocyanates, isothiocyanates, thioureas, thiols, thiophenols, thioethers, thiophene, tetrathionate, dithionite, dialkyl disulfides, sulfones, sulfoxides, sulfolanes, sulfonic acid, dimethylsulfoniopropionate, sulfonic esters, hydrogen sulfide, sulfate esters, sulfur dioxide and any other sour gases, elemental sulfur and any other sulfur-containing material considered to be a contaminant or pollutant.

 
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