Effectiveness of hydrogen peroxide for hydrogen sulfide control and induction of changes in a sulfate-reducing bacterial community

ENVR 130

Yu-Jie Chang, yjchang@mail.tnit.edu.tw1, Yi-tang Chang, ytchang@mail.tnit.edu.tw1, Chun-Hsiung Hung, badger@nchu.edu.tw2, and Cheng-Yan Lin2. (1) Department of Safety Health and Environmental Engineering, Tung-Nan Institute of Technology, No. 152, Sec. 3, PeiShen Rd., Shen-Keng, Taipei County, 222, Taiwan, (2) Department of Environmental Engineering, National Chung-Hsing University, No. 250, KuoKuang Rd., Tai-Chung, 402, Taiwan
Hydrogen sulfide (H2S) causes a toxic odor problem and is usually generated by sulfate-reducing bacteria (SRB) under anaerobic conditions. Many effective control strategies to restrain H2S, including the addition of hydrogen peroxide (H2O2), have been studied but most focus on the relationship between H2O2 and H2S as a physical-chemical phenomenon. In this study, changes in water quality parameters and the bacterial community after the addition of H2O2 were evaluated carefully using laboratory batch columns. The experimental results showed that the control column without added H2O2 generated biogenic H2S and the bacterial population contained a high percentage of sulfate reducing bacteria (SRB). After the addition of H2O2 to the experimental column, biogenic sulfide was inhibited. Oxidation-reduction potential and dissolved oxygen increased sharply to create an oxidative and aerobic environment. Most microorganisms, including the SRB, were killed by the addition of a high concentration of H2O2 (3,500 mg/L), but this lasted only a short time (about 33 days). Archaea, due to the presence in these bacteria of a highly active peroxidase reported in literature, the hybrid cluster protein, would seem to be able to show a faster recovery time after H2O2 treatment and became the dominant group of bacteria compared to the SRB. Short-term sustainability, bacterial efficiency and bacterial community change need to be considered during the practical application of H2O2 on H2S control.
 

General Papers
6:00 PM-8:00 PM, Wednesday, August 22, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Environmental Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007