高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (1): 162.

• 研究论文 • 上一篇    下一篇

生物阴极微生物燃料电池不同阴极材料产电特性

张金娜, 赵庆良, 尤世界, 张国栋   

  1. 哈尔滨工业大学市政环境工程学院, 城市水资源与水环境国家重点实验室, 哈尔滨 150090
  • 收稿日期:2009-01-20 出版日期:2010-01-10 发布日期:2010-01-10
  • 通讯作者: 赵庆良, 男, 博士, 教授, 主要从事污水、污泥处理及资源化研究. E-mail: qlzhao@hit.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 50776024)资助.

Power Generation in Bio-cathode Microbial Fuel Cell with Different Cathode Materials

ZHANG Jin-Na, ZHAO Qing-Liang*, YOU Shi-Jie, ZHANG Guo-Dong   

  1. State Key Laboratory of Urban Water Resources and Environments, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
  • Received:2009-01-20 Online:2010-01-10 Published:2010-01-10
  • Contact: ZHAO Qing-Liang. E-mail: qlzhao@hit.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 50776024)资助.

摘要:

以葡萄糖(COD初始浓度为2000 mg/L, COD为化学需氧量)为阳极燃料底物, 考察了碳纤维刷和柱状活性碳颗粒作为生物阴极微生物燃料电池(MFC)阴极材料的产电性能. 研究结果表明, 碳纤维刷MFC的启动时间比碳颗粒MFC的长, 达到稳定状态后的恒负载(300 Ω)电压(0.324 V)比碳颗粒阴极MFC的(0.581 V)低. 极化分析结果表明, 碳纤维刷MFC和碳颗粒MFC的最大功率密度分别为24.7 W/m3(117.2 A/m3)和50.3 W/m3(167.2 A/m3). 电化学交流阻抗谱(EIS)测定结果表明, 由于电极材料对微生物生长和分布状态存在不同的影响, 使得碳纤维刷阴极MFC的极化内阻大于碳颗粒阴极MFC的极化内阻.

关键词: 微生物燃料电池; 生物阴极; 电极材料; 功率密度

Abstract:

Power generation from bio-cathode microbial fuel cell(MFC) with graphite fiber brush(GFB) and graphite granule(GG) as cathode material was investigated with COD(Chemical Oxygen Demand) of 2000 mg/L glucose as anodic fuel. The results demonstrated that GFB-cathode MFC could be started up after a longer time with lower voltage of 0.324 V than GG-cathode MFC(0.581 V) at constant load of 300 Ω. Polarization analysis showed that the maximum power density of 24.7 W/m3(117.2 A/m3) and 50.3 W/m3(167.2 A/m3) were reached for GFB-cathode MFC and GG-cathode MFC, respectively. As indicated by electrochemical impedance spectroscopy(EIS) analysis, the difference in power output of two MFCs should result from internal resistance, particularly activation resistance. This is mainly because of the difference in surface feature of two materials for microbial growth and distribution. Organic compounds could be removed in both MFC systems, which accomplished waste water treatment.

Key words: Microbial fuel cell; Bio-cathode; Electrode material; Power density

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