| Title: | Experimental study on volatile sulfur compound inhibition using a single-chamber membrane-free microbial electrolysis cell |
| Author(s): | Pang Y; Gu T; Zhang G; Yu Z; Zhou Y; Zhu DZ; Zhang Y; Zhang T; |
| Address: | "The Institute of Municipal Engineering, Zhejiang University, Hangzhou, 310058, China. Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB, T6G 2W2, Canada. The Institute of Municipal Engineering, Zhejiang University, Hangzhou, 310058, China. zhoutang@zju.edu.cn" |
| Journal Title: | Environ Sci Pollut Res Int |
| DOI: | 10.1007/s11356-020-09325-8 |
| ISSN/ISBN: | 1614-7499 (Electronic) 0944-1344 (Linking) |
| Abstract: | "Odor emissions from sewer systems and wastewater treatment plants have attracted much attention due to the potential negative effects on human health. A single-chamber membrane-free microbial electrolysis cell was proposed for the removal of sulfides in a sewer system. The feasibility of the use of volatile sulfur compounds and their removal efficiency in liquid and headspace gas phases were investigated using synthetic wastewater with real sewer sediment and Ru/Ir-coated titanium electrodes. The results indicate that hydrogen sulfide and volatile organic sulfur compounds were effectively inhibited in the liquid phase upon electrochemical treatment at current densities of 1.55, 2.06, and 2.58 mA/cm(2), and their removal rates reached up to 86.2-100%, except for dimethyl trisulfide, the amount of which increased greatly at 1.55 mA/cm(2). In addition, the amount of volatile sulfur compounds in the headspace decreased greatly; however, the total theoretical odor concentration was still high, and methanethiol and ethanethiol greatly contributed to the total strength of the odor concentration due to their low odor threshold concentrations. The major pathway for sulfide removal in the single-chamber membrane-free microbial electrolysis cell is biotic oxidation, the removal rate of which was 0.4-0.5 mg/min, 4-5 times that of indirect electrochemical oxidation" |
| Keywords: | Electrolysis Odorants Sulfides Sulfur *Sulfur Compounds *Volatile Organic Compounds Microbial community Microbial electrolysis cells Theoretical odor concentration Volatile sulfur compounds; |
| Notes: | "MedlinePang, Yao Gu, Tianfeng Zhang, Guijiao Yu, Zhiguang Zhou, Yongchao Zhu, David Z Zhang, Yiping Zhang, Tuqiao eng 2017ZX07206-001/National Major Science and Technology Projects of China/ Germany 2020/05/30 Environ Sci Pollut Res Int. 2020 Aug; 27(24):30571-30582. doi: 10.1007/s11356-020-09325-8. Epub 2020 May 28" |
