STIMULATION OF ELEMENTAL SULFUR OXIDATION BY SEWAGE-SLUDGE

Sewage sludge and elemental sulphur (S-o) were combined and incubated under controlled conditions. Sulphur oxidation was enhanced by sewage sludge, though acidification of the mixtures prevented more than 4% of the S-o from being converted to sulphate. When introduced to the soil environment, over 50% of the S-o from these mixtures oxidized within 6 wk, compared with about 20% oxidation of S-o applied without sewage sludge.