FEASIBILITY TEST OF BIOLIGICAL DEGRADATION OF HETEROCYCLIC SULFUR COMPOUNDS IN ANAEROBIC STATE

摘要

Anarobic biodegradability for sulfolane and thiolane was ingvestigated in soil and anaerobically digested sludge. Biochemical methane potential was periodically quantified to assess biodegradability of microorganisms degrading the compounds prepared in the closed glass vessel. Relatively lower concentration of thiolane adopted in the test was hardly degraded in the soil. Moreover, its degradation was hindered in anaerobic digest sludge. In constrast, sulfolane was readily deocomposed in both the soil and the anaerobic sludge. It is concluded that subsequent occurrence hindered in anaerobic digest sludge. In constrast, sulfolane was readily decomposed in both the soil and the anaerobic sludge. It is concluded that subsequent occurrence of thiolane as one of intermediates generated from the reduction of sulfolane would reard the remediation of the concerned area polluted with sulfolane and thiolane.