Production of electricity from the treatment of urban waste water using a microbial fuel cell
Production of electricity from the treatment of urban waste water using a microbial fuel cell
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DOI：
10.1016/j.jpowsour.2007.01.054
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发表时间：
2007-06-10
影响因子：
9.2
通讯作者：
Linares, J. J.
中科院分区：
文献类型：
--
作者：
Rodrigo, M. A.;Canizares, P.;Linares, J. J.
本文研究了双室微生物燃料电池（MFC）对实际城市污水中污染物的氧化。通过对城市污水处理厂的活性污泥进行厌氧预处理，在不到10天的短驯化期后获得了WC中的发电。产生的功率密度主要取决于有机物含量（COD），而不是对废水流量。在0.23V的电池电压下，获得了25 mW·m ~（-2）的最大功率密度。阴极室中氧的消耗速率非常低。由于阳极室中的氧还原与COD氧化耦合，因此通过发电过程去除的COD非常小。因此，考虑到氧气消耗，得出的结论是，只有0.25%的去除的COD用于发电过程。剩余的COD应通过厌氧过程去除。阳极室中氧的存在导致MFC性能的劣化。MFC过程的这种劣化在出现不可忽略的氧浓度之后迅速发生。因此，为了确保这种类型的MFC的良好性能，应避免藻类的生长。(C)2007 Elsevier B. V.保留所有权利。
In this work, is studied the oxidation of the pollutants contained in an actual urban wastewater using a two-chamber microbial fuel cell (MFC). By using an anaerobic pre-treatment of the activated sludge of an urban wastewater treatment plant, the electricity generation in a WC was obtained after a short acclimatization period of less than 10 days. The power density generated was found to depend mainly on the organic matter contain (COD) but not on the wastewater flow-rate. Maximum power densities of 25 mW m(-2) (at a cell potential of 0.23 V) were obtained. The rate of consumption of oxygen in the cathodic chamber was very low. As the oxygen reduction is coupled with the COD oxidation in the anodic chamber, the COD removed by the electricity-generating process is very small. Thus, taking into account the oxygen consumption, it was concluded that only 0.25% of the removed COD was used for the electricity-generation processes. The remaining COD should be removed by anaerobic processes. The presence of oxygen in the anodic chamber leads to a deterioration of the MFC performance. This deterioration of the MFC process occurs rapidly after the appearance of non-negligible concentrations of oxygen. Hence, to assure a good performance of this type of MFC, the growth of algae should be avoided. (C) 2007 Elsevier B.V. All rights reserved.