Biofiltration of Reduced sulphur compounds: Impact of packing material inoculation with acclimatized microbial communities on performance

摘要

In this study, we explored the mechanisms of dimethyl sulfide (DMS) bio-degradation by an acclimatized microbial community used as inoculum of an organic packing material in a gas biofilter. Firstly, experimental parameters such as temperature and pH seem to have an impact on DMS removal. DMS-polluted gas has then been treated by a laboratory-scale biofilter. DMS biodegradation activity, diversity and structure of the microbial community have been investigated. DMS elimination capacity of 4.3 ± 1.7 g DMS. m-3 sawmill chips. h-1 was achieved and 100% of bed height was required. DGGE analysis highlighted that the microbial community structure was different between each level (Bray-Curtis similarity values fluctuated between 17 and 45%) and hence did not highlight any height effect.