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首页> 外文期刊>Bioprocess and Biosystems Engineering >Effect of biofilm formation on the performance of microbial fuel cell for the treatment of palm oil mill effluent
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Effect of biofilm formation on the performance of microbial fuel cell for the treatment of palm oil mill effluent

机译：生物膜形成对微生物燃料电池处理棕榈油厂废水的性能的影响

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摘要

Anode biofilm is a crucial component in microbial fuel cells (MFCs) for electrogenesis. Better knowledge about the biofilm development process on electrode surface is believed to improve MFC performance. In this study, double-chamber microbial fuel cell was operated with diluted POME (initial COD = 1,000 mg L~(-1)) and polyacrylonitrile carbon felt was used as electrode. The maximum power density, COD removal efficiency and Coulombic efficiency were found as 22 mW m~(-2), 70 and 24 %, respectively. FTIR and TGA analysis confirmed the formation of biofilm on the electrode surface during MFC operation. The impact of anode biofilm on anodic polarization resistance was investigated using electrochemical impedance spectroscopy (EIS) and microbial community changes during MFC operation using denaturing gradient gel electrophoresis (DGGE). The EIS-simulated results showed the reduction of charge transfer resistance (R_(ct)) by 16.9 % after 14 days of operation of the cell, which confirms that the development of the microbial biofilm on the anode decreases the R_(ct) and therefore improves power generation. DGGE analysis showed the variation in the biofilm composition during the biofilm growth until it forms an initial stable microbial community, thereafter the change in the diversity would be less. The power density showed was directly dependent on the biofilm development and increased significantly during the initial biofilm development period. Furthermore, DGGE patterns obtained from 7th and 14th day suggest the presence of less diversity and probable functional redundancy within the anodic communities possibly responsible for the stable MFC performance in changing environmental conditions.
机译：阳极生物膜是微生物燃料电池（MFC）中用于电生成的重要组成部分。人们认为，对电极表面生物膜形成过程的更好了解可以改善MFC性能。在这项研究中，双室微生物燃料电池以稀释的POME（初始COD = 1,000 mg L〜（-1））运行，并使用聚丙烯腈碳毡作为电极。最大功率密度，COD去除效率和库仑效率分别为22 mW m〜（-2），70％和24％。 FTIR和TGA分析证实了在MFC操作过程中电极表面上形成了生物膜。使用电化学阻抗谱（EIS）和变性梯度凝胶电泳（DGGE）研究了MFC操作过程中阳极生物膜对阳极极化电阻的影响和微生物群落的变化。 EIS模拟的结果表明，在电池工作14天后，电荷转移阻力（R_（ct））降低了16.9％，这证实了阳极上微生物膜的形成降低了R_（ct），因此改善发电。 DGGE分析显示生物膜生长过程中生物膜组成的变化，直到形成初始的稳定微生物群落为止，此后多样性的变化将变小。显示的功率密度直接取决于生物膜的发育，并在初始生物膜发育期间显着增加。此外，从第7天和第14天获得的DGGE模式表明，在阳极群落中存在较少的多样性和可能的​​功能冗余，这可能是在不断变化的环境条件下稳定MFC性能的原因。

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  • 来源
    《Bioprocess and Biosystems Engineering》 |2015年第1期|15-24|共10页
  • 作者

    E. Baranitharan; Maksudur R. Khan; D. M. R. Prasad; Wee Fei Aaron Teo; Geok Yuan Annie Tan; Rajan Jose;

  • 作者单位

    Faculty of Chemical and Natural Resources Engineering, Universiti Malaysia Pahang, 26300 Gambang, Kuantan, Pahang, Malaysia;

    Faculty of Chemical and Natural Resources Engineering, Universiti Malaysia Pahang, 26300 Gambang, Kuantan, Pahang, Malaysia;

    Faculty of Chemical and Natural Resources Engineering, Universiti Malaysia Pahang, 26300 Gambang, Kuantan, Pahang, Malaysia;

    Faculty of Science, Institute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia;

    Faculty of Science, Institute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia,Institute of Ocean and Earth Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia;

    Faculty of Science and Technology, Universiti Malaysia Pahang, 26300 Gambang, Kuantan, Pahang, Malaysia;

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  • 正文语种 eng
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  • 关键词

    Microbial fuel cell; Biofilm; Palm oil mill effluent; Wastewater treatment;

    机译：微生物燃料电池;生物膜棕榈油厂废水;废水处理;

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