|本期目录/Table of Contents|

[1]蒋沁芮,李泽华,杨 暖,等.三维电极微生物燃料电池处理生活污水同步产电性能*[J].应用与环境生物学报,2018,24(04):1-9.[doi:10.3724/SP.J.1145.2017.11011]
 JIANG Qinrui,LI Zehua,et al.Microbial Fuel Cell with three-dimensional electrodes for domestic wastewater treatment and electricity generation*[J].Chinese Journal of Applied & Environmental Biology,2018,24(04):1-9.[doi:10.3724/SP.J.1145.2017.11011]
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三维电极微生物燃料电池处理生活污水同步产电性能*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
24卷
期数:
2018年04期
页码:
1-9
栏目:
研究论文
出版日期:
2018-08-25

文章信息/Info

Title:
Microbial Fuel Cell with three-dimensional electrodes for domestic wastewater treatment and electricity generation*
文章编号:
201711011
作者:
蒋沁芮1 2 李泽华1 2 杨 暖1 2 吴亭亭1 2 李大平1**
1中国科学院成都生物研究所 成都 6100642中国科学院大学 北京 100049
Author(s):
JIANG Qinrui1 2 LI Zehua1 2 YANG Nuan1 2 WU Tingting1 2 & LI Daping1**
1Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China?
2University of Chinese Academy of Sciences, Beijing 100049, China
关键词:
微生物燃料电池三维电极生活污水COD氨氮产电
Keywords:
microbial fuel cell three-dimensional electrodes domestic wastewater COD ammonia nitrogen electricity generation
DOI:
10.3724/SP.J.1145.2017.11011
摘要:
构建以填充碳毡构成的三维结构为电极的单室微生物燃料电池,用于处理生活污水同步产电。对比分析序批运行和连续运行方式对生活污水的处理效果以及MFC的产电性能,为将MFC推广应用于实际提供参考依据。在序批实验中,5 d内COD、NH4+-N去除率分别达到91.1%和98.2%,处理结果符合城镇污水处理厂污染物排放标准(GB18918-2002)一级A标准;当MFC外接51 Ω电阻时最大功率密度为27.88 mW/m3。在连续实验中,污水以稳定流速(0.2 mL/min)自反应器底部注入,形成上流式连续运行模式,其水力停留时间(HRT)为5 d,此时出水中COD保持稳定,去除率变化范围为83.2%-97.4%,NH4+-N浓度逐渐降低保持在9.45 mg/L以下,反应器对污水中NH4+-N的去除效果较好,自第11d后出水中有NO3--N积累,导致总氮去除率较低。连续运行方式下MFC最大功率密度为582.5 mW/m3;平稳期平均输出电压为0.0877 V,是序批运行时的2.9倍。结果表明在连续运行方式下,微生物可不断利用有机物用于产电,所以连续运行方式时MFC的产电性能更好,其最大功率密度约是序批方式的21倍。最后本文基于16SrRNA高通量测序对电极上微生物群落分析发现,主导微生物属于Thauera sp. 、Saprospiraceae-UN sp. 、OPB56-UN sp. ,Thauera sp. 是一类能以电极为电子供体而还原NO3--N的脱氮微生物,因此可通过富集此类脱氮菌来降低连续运行方式下出水NO3-N浓度,这为改善污水处理效果提供了一种新方法。(图5 参27)
Abstract:
A single chamber Microbial Fuel Cell (MFC) with three-dimensional electrodes of packed bed carbon felts was developed to treat domestic wastewater while simultaneously generate electricity. The influence of batch and continuous operation mode on the treatment effectiveness and electricity production of MFC was investigated to provide a reference for the application of MFC. The MFC with total working volume of 1440 mL was operated in fed-batch mode for 5 days repeatedly three times, and then shifted to continuous mode. During the test of continuous mode, wastewater was continuously pumped into the anode compartment at a flow rate of approximately 0.2mL/min, resulting in a hydraulic retention time (HRT) of 5 d. In the batch test, the MFC obtains 91.1% COD and 98.2% NH4+-N removals, which accord with the first criteria specified in discharge standard of pollutants for municipal wastewater treatment plant of China (GB18918-2002). Besides, a maximum power density of 27.88 mW/m3 was achieved at a 51 Ω external resistor. In the continuous test, the COD removal efficiencies ranged from 83.2% to 97.4%. The concentration of NH4+-N was gradually decreased within 5 days and then maintains below 9.45 mg/L, thus a enhanced removal performance of NH 4+-N was acquired. However, a low removal efficiency of Total Nitrogen (TN) was observed due to the accumulation of NO3--N in effluent since the 11 th day . In addition, the MFC continually generates electricity with maximum power density of 582.5 mW/m3 and average output voltage of 0.0 877 V in the stable period at the continuous operation mode. Moreover, 16SrRNA gene high-throughput sequencing showed that Thauera sp. 、Saprospiraceae-UN sp. 、OPB56-UN sp. is identified as dominant populations. The result suggested that the organic matters associated with power generation were constantly utilized by the microorganisms in the reactor, which caused a excellent electricity generation performance in the continuous test. Thauera sp . as a kind of nitrate-reduced bacteria was enriched in autotrophic denitrifying microbial communities , therefore, bio-enrichment with denitrifying bacteria like Thauera sp . could to decrease the concentration of NO3--N in effluent at the continuous operation mode, which is expected to be a innovation for improvement of wastewater treatment.

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 LI Denglan,et al..Progress in Construction of Microbial Fuel Cell[J].Chinese Journal of Applied & Environmental Biology,2008,14(04):147.
[2]张雅舒,张礼霞,李大平.微生物燃料电池还原二氧化铅及产电研究[J].应用与环境生物学报,2012,18(05):780.[doi:10.3724/SP.J.1145.2012.00780]
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[5]刘柯,李大平,王娟.尿液微生物燃料电池研究[J].应用与环境生物学报,2015,21(01):36.[doi:10.3724/SP.J.1145.2014.03030]
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[6]华涛,李胜男,周启星,等.生物电化学系统3种典型构型及其应用研究进展[J].应用与环境生物学报,2018,24(03):663.[doi:10.19675/j.cnki.1006-687x.2017.08046]
 HUA Tao,LI Shengnan,ZHOU Qixing,et al.Recent advances in three typical configurations and applications of bioelectrochemical systems[J].Chinese Journal of Applied & Environmental Biology,2018,24(04):663.[doi:10.19675/j.cnki.1006-687x.2017.08046]

备注/Memo

备注/Memo:
收稿日期: 2017-11-06 接受日期:2017-12-21
*四川省应用基础研究重大前沿项目(2017JY0065)资助
**通讯作者(E-mail: lidp@cib.ac.cn)
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更新日期/Last Update: 2018-01-10