Bioelectricity production from municipal leachate in a microbial fuel cell: Effect of two cathodic catalysts
Bioelectricity production from municipal leachate in a microbial fuel cell: Effect of two cathodic catalysts
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DOI：
10.1016/j.ijhydene.2014.05.178
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发表时间：
2014-10
影响因子：
7.2
通讯作者：
A. L. Vázquez-Larios;O. Solorza-Feria;H. Poggi‐Varaldo;Rosa de Guadalupe González-Huerta;M. Ponce-Noyola;E. Ríos‐Leal;N. Rinderknecht-Seijas
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文献类型：
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作者：
A. L. Vázquez-Larios;O. Solorza-Feria;H. Poggi‐Varaldo;Rosa de Guadalupe González-Huerta;M. Ponce-Noyola;E. Ríos‐Leal;N. Rinderknecht-Seijas
本工作的目的是评价阴极催化剂的效果（硫属化物或Pt）对在微生物燃料电池中从实际的城市渗滤液产生生物电的影响，所述微生物燃料电池配备有由颗粒石墨（MFC-G）制成的阳极并接种有富含Mn（IV）还原细菌的接种物。（I和II）的MFC-G的特征在于分离（I和II）、串联和并联。平行连接的面增加了最大体积功率高达1239和1799 mW m− 3的RuxMoySez和Pt，分别。一般来说，电极面的平行连接显著降低了Rint（RuxMoySez和Pt分别为44和77 Ω）。在电池连接到外部电阻（Rext）的分批操作中，第二次分批操作循环的平均体积功率PV-avein为1005 ± 5和1317 ± 687 mW m-3，而RuxMoySez和Pt的有机物去除效率分别为70%和85%。在装有实际沥滤液的电解槽重复分批操作期间，有初步证据表明存在电解槽内富集过程。在原则上，与催化剂RuxMoySez的MFC表现出的性能比与Pt的低24%和20%（PV-ave和有机物去除的基础上，分别）。这将指向一个折衷或妥协的解决方案，因为RuxMoySezcatalyst的成本比Pt低70%。
The objective of this work was to evaluate the effect of the cathodic catalyst (either chalcogenide or Pt) on bioelectricity production from actual municipal leachate in a microbial fuel cell equipped with an anode made of granular graphite (MFC-G) and seeded with an inoculum enriched in Mn(IV)-reducing bacteria.Each face (I and II) of the MFC-G was characterized by separate (I and II), in series, and parallel connection. Parallel connection of faces increased the maximum volumetric power up to 1239 and 1799 mW m−3for RuxMoySezand Pt, respectively. In general parallel connection of electrode faces significantly decreased theRint(44 and 77 Ω for RuxMoySezand Pt, respectively). In the batch operation where the cells were connected to external resistances (Rext) the average volumetric powersPV-avein the second cycle of batch operation were 1005 ± 5 and 1317 ± 687 mW m−3whereas organic matter removal efficiencies of 70 and 85% were registered for the RuxMoySezand Pt, respectively. During the repetitive batch operation of the cells loaded with an actual leachate there was preliminary evidence of an in-cell enrichment process. In principle, the MFC with catalyst RuxMoySezexhibited a performance 24% and 20% lower than that with Pt (onPV-aveand organic matter removal basis, respectively). This would point to a trade-off or compromise solution, since the cost of RuxMoySezcatalyst is 70% lower than that of Pt.