Removal characteristics of hydrogen sulphide and methanethiol by Thiobacillus sp. isolated from peat in biological deodorization

摘要: Thiobacillus sp. HA43 as a dominant strain was isolated from H2S-acclimated peat biofilter seeded with aerobically-digested sludge of night soil. Strain IIA43 degraded both H2S and methanethiol (MT) without lag-time, but neither dimethy sulphide (DMS) nor dimethyl disulphide (DMDS). The removal characteristics for sulphur compounds (H2S, MT, DMS DMDS) by well reflected the behaviour where this isolated. specific MT uptake rates in batch culture were determined 1.22 × 10−12 8.53 10−14 g-S·cell−1·h−1, respectively. maximum (Vm = g-S·kg-dry peat−1·d−1) inoculated obtained follows: Vm(H2S)− 11.3, Vm(MT) 0.21 sterilized peat; Vm(H2S) 12.4, Vm(MT)− 0.27 non-sterilized 33.0, enhanced rate 6-fold compared HA43.