Simultaneous nitrification and denitrification in the bio-cathode of a multi-anode microbial fuel cell
Simultaneous nitrification and denitrification in the bio-cathode of a multi-anode microbial fuel cell
复制标题
多阳极微生物燃料电池生物阴极的同步硝化和反硝化
DOI：
10.1080/09593330.2019.1663938
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发表时间：
2019-09
影响因子：
2.8
通讯作者：
Xia Gu
中科院分区：
文献类型：
--
作者：
Guangcan Zhu;Shan Huang;Yongze Lu;Xia Gu
研制了多阳极微生物燃料电池(MA-MFC)，用于研究生物阴极中的同步硝化反硝化(SND)过程。当阴极的化学需氧量/氮比从0增加到4.5时，发电量在498~543℃之间变化，总氮(TN)的去除效率达到12.07gTN·m−3·d−1，在目标COD/N比为3.5时，TN的去除效率为78.8%。比较了串联与并联、开路与闭路对污染物的去除效果。串联结构对TN、NH+4、−N和阴阳极的去除效果均优于串联结构。串联工艺对TN的去除效率可达14.4g TN·m−3·d−1，是串联工艺的1.9倍。与开路系统相比，闭路系统对总氮的去除效率提高了17.8%，这主要归功于电化学反硝化作用。高通量测序的结果证实和澄清了MA-MFC运行18个月后存在自养反硝化和异养反硝化，包括好氧反硝化。
A multi-anode microbial fuel cell (MA-MFC) was developed to investigate simultaneous nitrification and denitrification (SND) in the bio-cathode. As the chemical oxygen demand to nitrogen (COD/N) ratio of the cathode was increased from 0 to 4.5, the electricity-producing quantity ranged between 498 and 543 C and the attained total nitrogen (TN) removal rate reached 12.07 g TN·m−3·d−1, resulting in a TN removal efficiency of 78.8% under the target COD/N ratio of 3.5. The removal of pollutants in series and parallel, open-circuit and closed-circuit were compared, respectively. The removal rates of TN, NH+4− N, and cathode and anode COD were all higher in the parallel connection configuration than in the series configuration. In parallel connection, the TN removal rate reached 14.4 g TN·m−3·d−1, which was 1.9 times that in series connection. Compared with the open-circuit system, the removal rate of TN in the closed-circuit system was improved by 17.8%, which could be ascribed to electrochemical denitrification. The results of high-throughput sequencing confirmed and clarified the presence of autotrophic denitrification and heterotrophicdenitrification, including aerobic denitrification, when the MA-MFC had been operated for 18 months.
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影响因子：
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作者：
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通讯作者：
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DOI：
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发表时间：
2002-11
影响因子：
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影响因子：
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