Effect of dissolved oxygen on nitrogen and phosphorus removal and electricity production in microbial fuel cell

被引:65
作者
Tao, Qinqin [1 ]
Luo, Jingjing [1 ]
Zhou, Juan [1 ]
Zhou, Shaoqi [1 ,2 ,3 ,4 ]
Liu, Guangli [5 ]
Zhang, Renduo [5 ]
机构
[1] S China Univ Technol, Coll Environm Sci & Energy, Guangzhou Higher Educ Mega Ctr, Guangzhou 510006, Guangdong, Peoples R China
[2] Guizhou Acad Sci, Guiyang 550001, Peoples R China
[3] S China Univ Technol, State Key Lab Subtrop Bldg Sci, Guangzhou 510641, Peoples R China
[4] S China Univ Technol, Key Lab Environm Protect & Ecoremediat, Guangdong Regular Higher Educ Inst, Guangzhou Higher Educ Mega Ctr, Guangzhou 510006, Guangdong, Peoples R China
[5] Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China
关键词
Microbial fuel cell; Phosphorus; Nitrogen; Dissolved oxygen; Precipitate; STRUVITE; GENERATION; PRECIPITATION; BIOCATHODE; AMMONIUM; RECOVERY; BACTERIA; MODEL;
D O I
10.1016/j.biortech.2014.05.002
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Performance of a two-chamber microbial fuel cell (MFC) was evaluated with the influence of cathodic dissolved oxygen (DO). The maximum voltage, coulombic efficiency and maximum power density outputs of MFC decreased from 521 to 303 mV, 52.48% to 23.09% and 530 to 178 mW/m(2) with cathodic DO declining. Furthermore, a great deal of total phosphorus (TP) was removed owing to chemical precipitation (about 80%) and microbial absorption (around 4-17%). COD was first removed in anode chamber (>70%) then in cathode chamber (<5%). Most of nitrogen was removed when the cathodic DO was at low levels. Chemical precipitates formed in cathode chamber were verified as phosphate, carbonate and hydroxyl compound with the aid of scanning electron microscope capable of energy dispersive spectroscopy (SEM-EDS), X-ray diffractometer (XRD) and Fourier transform infrared spectroscopy (FTIR). (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:402 / 407
页数:6
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