Removal Characteristics of Dimethyl Sulfide, Methanethiol and Hydrogen Sulfide by Hyphomicrobium sp. I55 Isolated from Peat Biofilter

概要

論文の詳細を見る
Methylotrophic strain I55,capable of removing dimethyl sulfide (DMS), methanethiol (MT), dimethyldisulfide (DMDS), hydrogen sulfide (H_2S) and dimethyl sulfoxide (DMSO) was isolated from DMSO enrichment culture by inoculating DMS-acclimated peat. This bacterium was identified as Hyphomicrobium sp. by an electron microscope and substrate requirement study. Optimal removal of DMS was observed at pH 6.8,and the maximum removal rate was 1.2×10^< : -14> (g-S・h^<-1>・cell^<-1>). When strain I55 was inoculated to peat, the specific DMS removal rate estimated was almost equal to that measured in a liquid test of pure I55. The overall maximum removal rate of DMS in a peat biofilter seede with strain I55 was 0.59 (g-S・kg-dry peat^<-1>・d-<-1>), which was 1.5 times larger than that of the peat biofilter seeded with digested sludge of night soil in a previous experiment. In a mixed gas supply of DMS, MT and H_2S, the removal rate of H_2S and MT were not affected by the co-existence of the other gases, but DMS removal was inhibited by the presence of H_2S and MT.
公益社団法人日本生物工学会の論文
1991-11-25