Removal Characteristics of Hydrogen Sulphids and Methanethiol by Thiobacillus sp. Isolated from Peat in Biological Deodorization

概要

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Thiobacillus sp. HA43 as a dominant strain was isolated from a H_2S-acclimated peat biofilter seeded with aerobically-digested sludge of night soil. Strain HA43 degraded both H_2S and methanethiol(MT)without lagtime, but degraded neither dimethy sulphide (DMS) nor dimethyl disulphide(DMDS). The removal characterixtics for sulphur compounds(H_2S, MT, DMS, and DMDS)by strain HA43 well reflected the removal behavior of the H_2S-acclimated peat biofilter where this strain was isolated. The specific H_2S and MT uptake rates of strain HA43 in batch culture were determined as 1.22×10^<-12> and 8.53×10^<-14> g-S・cell^<-1>・h^<-1>, respectively. The maximum removal rates(V_m=g-S・kg-dry peat^<-1>・d^<-1>)for H_2S and MT by peat biofilter inoculated by strain HA43 were obtained as follows : V_m(H_2S)=11.3,V_m(MT)=0.21 in sterilized peat; V_m(H_2S)=12.4,V_m(MT)=0.27 in non-sterilized peat; V_m(H_2S)=33.0,V_m(MT)=0.27 in peat aerobically-digested sludge of night soil. The peat biofilter inoculated with strain HA43 enhanced the maximum removal rate for H_2S 6-fold compared with the biofilter without strain HA43.
社団法人日本生物工学会の論文
1991-01-25