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Simultaneous sulfide removal, nitrification, denitrification and electricity generation in three-chamber microbial fuel cells
Separation and Purification Technology ( IF 8.1 ) Pub Date : 2017-12-14 , DOI: 10.1016/j.seppur.2017.12.027
Shaohui Zhang , Renbing Bao , Junjia Lu , Wenjiao Sang

Sulfide and ammonium in some industrial wastewaters need abolishing. The three-chamber microbial fuel cell (MFC), consisting of an oxic-cathode and an anoxic-cathode sharing same anode, was explored to accomplish simultaneous sulfide removal, nitrification, denitrification and electricity generation. It provided a promise of recovering electricity from wastewater containing sulfide and ammonium. The three-chamber MFC run with separate sulfide feeding and ammonium feeding showed preferable nitrogen removal and electricity generation performance as compared to that with a mixed sulfide/ammonium feeding. The desirable feeding sulfide concentration for this MFC was deemed as 193.6 ± 0.8 mg S L−1 considering both pollutant removal and electricity generation performance. Temperature rise favored both pollutants removal and electricity generation but hampered elemental sulfur recovery. The suitable temperature for this MFC was found to be 30 °C, achieving a total nitrogen removal rate of 10.0 ± 1.3 g N m−3 d−1, a sulfide removal rate of 206.5 ± 1.9 g S m−3 d−1, a sulfur recovery efficiency of 28.9%, and an electricity generation of 428.0 ± 26.2 C/batch cycle. The distribution of coulombs to both cathodes affected the performance of nitrogen removal and electricity generation.



中文翻译:

三室微生物燃料电池中硫化物的同时去除,硝化,反硝化和发电

一些工业废水中的硫化物和铵盐需要废除。探索了三腔微生物燃料电池(MFC),由共享同一阳极的氧化阴极和缺氧阴极组成,以完成硫化物的同时去除,硝化,反硝化和发电。它提供了从含硫化物和铵的废水中回收电力的承诺。与单独的硫化物/铵混合进料相比,在单独的硫化物进料和铵进料下运行的三室MFC显示出较好的脱氮和发电性能。该MFC的理想进料硫化物浓度被认为是193.6±0.8 mg S L -1同时考虑污染物去除和发电性能。温度的升高有利于污染物的去除和发电,但阻碍了元素硫的回收。发现该MFC的合适温度为30℃,实现总氮去除率为10.0±1.3g N m -3  d -1,硫化物去除率为206.5±1.9g S m -3  d -1,硫的回收率为28.9%,发电量为428.0±26.2 C /批循环。库仑在两个阴极上的分布都会影响脱氮和发电的性能。

更新日期:2017-12-14
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