Department of Biological and Ecological Engineering, Oregon State University, 116 Gilmore Hall, Corvallis, OR 97331, USA.
Department of Biological and Ecological Engineering, Oregon State University, 116 Gilmore Hall, Corvallis, OR 97331, USA.
Water Res. 2014 Mar 15;51:228-33. doi: 10.1016/j.watres.2013.10.062. Epub 2013 Nov 7.
Simultaneous high power generation (3.6 W/m(2)) and high Cd (90%) and Zn (97%) removal efficiencies were demonstrated in a single chamber air-cathode microbial fuel cell (MFC). The maximum tolerable concentrations (MTCs) were estimated as 200 μM for Cd and 400 μM for Zn. Increasing the concentrations of Cd to 300 μM and Zn to 500 μM resulted in voltage drops by 71 and 74%, respectively. Feeding the MFCs with incrementally increased Cd and Zn concentrations resulted in much slower reduction in voltage output. Biosorption and sulfides precipitation are the major mechanisms for the heavy metal removal in the MFCs.
在单室空气阴极微生物燃料电池（MFC）中，同时实现了高发电功率（3.6 W/m(2)) 和高 Cd（90%）和 Zn（97%）去除效率。Cd 的最大耐受浓度（MTC）估计为 200 μM，Zn 的 MTC 为 400 μM。Cd 浓度增加到 300 μM 和 Zn 浓度增加到 500 μM 时，电压分别下降了 71%和 74%。用递增浓度的 Cd 和 Zn 喂养 MFC 导致电压输出的降低速度明显减慢。生物吸附和硫化物沉淀是 MFC 中重金属去除的主要机制。
