College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China,
J Ind Microbiol Biotechnol. 2014 May;41(5):795-802. doi: 10.1007/s10295-014-1425-4. Epub 2014 Mar 20.
The effect of operating modes on the simultaneous sulfide and nitrate removal were studied in two-chamber microbial fuel cells (MFCs). The batch and continuous operating modes were compared and evaluated in terms of substrate removal and electricity generation. Upon gradual increase in the influent sulfide concentration from 60 to 1,020 S mg L(-1), and the hydraulic retention time decrease from 17.2 to 6 h, the MFC accomplished a good substrate removal efficiency whereby nitrogen and sulfate were the main end products. The removal efficiency of the MFC in the continuous mode was much higher than that in the batch mode, and its current densities in the continuous mode were more stable and higher than in the batch mode, which could be explained by the linear relationship between electrons released by the substrates and accepted on the electrodes. The electricity output in the continuous mode of the MFC was higher than that in the batch mode. MFC's operation in the continuous mode was a better strategy for the simultaneous treatment of sulfide and nitrate.
在双室微生物燃料电池 (MFC) 中研究了操作模式对同时去除硫化物和硝酸盐的影响。比较和评估了批处理和连续操作模式在基质去除和发电方面的性能。当进水硫化物浓度从 60 逐渐增加到 1020 S mg L(-1)，水力停留时间从 17.2 减少到 6 h 时，MFC 实现了良好的基质去除效率，其中氮和硫酸盐是主要的最终产物。连续模式下 MFC 的去除效率明显高于批处理模式，其连续模式下的电流密度更稳定且高于批处理模式，这可以通过基质释放的电子与电极上接受的电子之间的线性关系来解释。连续模式下 MFC 的电能输出高于批处理模式。因此，MFC 的连续模式操作是同时处理硫化物和硝酸盐的更好策略。
