Removal of hydrogen sulfide in a biotrickling filter under extremely acidic conditions
Hydrogen sulfide (H2S), an extremely corrosive and toxic gas, was commonly generated by urban treatment plants, gas and oil refineries, paper and pulp industries and so on. Biofiltration, which was considered as cost-effective and environmentfriendly, evoked substantial attention in recent years. In this study, a biotrickling filter filled with polypropylene pall rings was constructed, where efficient removal of H2S under extremely acidic conditions (pH 1.0) took place. The effects of empty bed resident time (EBRT), inlet H2S concentration, pH on the performance of the reactor were investigated. H2S removal efficiency was consistently above 90％ after a start-up period of 18 d and a maximum elimination capacity of 52.0 g/m3·h was obtained after operation for 58 d. A high removal efficiency of 100％ was achieved with EBRT in the range of 13-30 s. A maximal elimination capacity of 70.2 g/m3·h was obtained with an inlet H2S concentration of 400 mg/m3, when H2S removal efficiency was only 73.1％. These results demonstrated that the system could be operated well under extremely low pH, which is economical and convenient for H2S removal process where hydrogen ions were accumulated.
H2S biotrickling filter biodegradation removal efficiency elimination capacity
Jing Chen
School of Food and Pharmacy,Zhejiang Ocean University,Zhoushan, PR China
国际会议
2010 International Conference on Digital Manufacturing and Automation(2010 数字制造与自动化国际会议 ICDMA 2010)
长沙
英文
158-161
2010-12-18（万方平台首次上网日期，不代表论文的发表时间）