College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China.
Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Pakistan.
Bioresour Technol. 2020 Jun;306:123174. doi: 10.1016/j.biortech.2020.123174. Epub 2020 Mar 10.
The current work coupled simultaneous sulfide and nitrate removal in a Microbial Fuel Cell (MFC). The substrate removal and electricity generation were coupled at influent Sulfide to Nitrate molar ratios (S/N ratios) of 5:0, 5:1, 5:2 and 5:3. The sulfide concentrations used included: 60 mg S/L, 300 mg S/L, 540 mg S/L, 780 mg S/L and 1020 mg S/L. The effect of S/N ratio on the performance of substrate removal was greater at higher influent sulfide concentration. The electricity generation also varied at different influent sulfide concentrations and S/N ratios. The number of electrons generated at S/N ratio of 5:2 was the largest at any fixed influent sulfide concentration. The Pearson correlation showed that effluent sulfate concentration and nitrogen gas had significant positive correlations with steady state voltage (or electronic quantity). Moreover, the simulation models were developed to establish the relation between substrate removal and electricity generation at various S/N ratios.
当前的工作是在微生物燃料电池 (MFC) 中同时去除硫化物和硝酸盐。在进水硫化物与硝酸盐摩尔比（S/N 比）为 5:0、5:1、5:2 和 5:3 的情况下，实现了基质去除和发电的耦合。使用的硫化物浓度包括：60 mg S/L、300 mg S/L、540 mg S/L、780 mg S/L 和 1020 mg S/L。在较高的进水硫化物浓度下，S/N 比对基质去除性能的影响更大。在不同的进水硫化物浓度和 S/N 比下，发电量也有所不同。在任何固定的进水硫化物浓度下，S/N 比为 5:2 时产生的电子数量最多。皮尔逊相关性分析表明，出水硫酸盐浓度和氮气与稳定态电压（或电子数量）呈显著正相关。此外，还开发了模拟模型，以建立在各种 S/N 比下基质去除与发电之间的关系。
