CJCU

Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (6): 1231.

• Articles • Previous Articles     Next Articles

Microbial Fuel Cell Using Sequential Anode-cathode to Treat Brewery Wastewater

WEN Qing1*, WU Ying1, WANG Gui-Ling1, ZHAO Li-Xin2, SUN Qian1, KONG Fan-Ying1   

  1. 1. College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;
    2. Mechanical Science and Engineering College, Daqing Petroleum Institute, Daqing 163318, China
  • Received:2009-07-06 Online:2010-06-10 Published:2010-06-10
  • Contact: WEN Qing. E-mail: wenqing@hrbeu.edu.cn
  • Supported by:

    黑龙江省科技攻关项目(批准号: GC07A305)、大庆市科技攻关项目(批准号: SGG2008-029)和哈尔滨工程大学校科学基金(批准号: HEUFT08008)资助.

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Abstract:

A sequential anode-cathode double-chamber MFC, in which the effluent of anode chamber was used as a continuous feed for an aerated cathode chamber, was constructed to treat brewery wastewater. The chemical oxygen demand(COD) can also be removed by heterotrophic bacteria in the cathode chamber. The performances of electricity generation and brewery wastewater treatment were studied. The results showed that the sequential anode-cathode MFC had a great potential for substrate removal in both anode and cathode. Total COD removal efficiency of 92.2%—95.1% was achieved, with COD removal efficiency of 47.6%—56.5% in anode chamber. The open circuit voltage of the MFC is 0.451 V and the maximum power output is 2.89 W/m3. According to electrode potential measurement and electrochemical impedance spectroscopy, the key limited factor was polarization loss of cathode. The performance of MFC can be optimized by decreasing COD of cathode chamber, using more superior cathode materials, increasing oxygen concentration etc.

Key words: Microbial fuel cell; Brewery wastewater; Chemical oxygen demand(COD) removal efficiency

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