The age of hydrogen sulfide and ensuing sulfuric acid outcomes from microbially mediated reaction, of sulfate‐reducing microorganisms (SBR) and sulfide‐oxidizing microscopic organisms.
These life forms can utilize an assortment of electron donors (AH2) and can
couple oxidation of those compounds to decrease sulfate (just as
elemental sulfur). the cycle is called as the dissimilatory sulfate reducton (Rivers SingletonJr, 1993)
while, Sulfur oxidizing bacteria (SOB) help to control the environmental pollution by controlling H2S pollution and help in sulfur cycle (Pokorna and Zabranska, 2015)
Reference:Chapter The Sulfate-Reducing Bacteria: An Overview
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Article Sulfur-oxidizing Bacteria in Environmental Technology