Copper Recovery Combined with Electricity Production in a Microbial Fuel Cell
Copper Recovery Combined with Electricity Production in a Microbial Fuel Cell
复制标题
DOI：
10.1021/es100526g
复制
发表时间：
2010-06-01
影响因子：
11.4
通讯作者：
Hamelers, Hubertus V. M.
中科院分区：
文献类型：
--
作者：
Ter Heijne, Annemiek;Liu, Fei;Hamelers, Hubertus V. M.
冶金微生物燃料电池（MFC）是从含铜废物流中回收铜的一个有吸引力的替代方案，因为金属在阴极以其金属形式回收，而金属还原的能量可以从阳极的有机材料氧化中获得，并可能产生额外的电力。我们研究了用双极膜作为pH分离器在MFC中回收铜。在厌氧条件下，电流密度为1.7 a /m(2)时，最大功率密度为0.43 W/m(2)。在氧气存在的情况下，MFC的性能显著提高，在3.2 a /m(2)的电流密度下，其最大功率密度可达0.80 W/m(2)。阴极上形成了纯铜晶体，没有检测到CuO和Cu2O。>的去除率为99.88%。与产电相比，铜的阴极回收率为84%（厌氧）和43%（好氧）。采用Cu2+还原阴极的冶金MFC进一步扩大了MFC的应用范围。
A metallurgical microbial fuel cell (MFC) is an attractive alternative for recovery of copper from copper containing waste streams, as the metal is recovered in its metallic form at the cathode, while the energy for metal reduction can be obtained from oxidation of organic materials at the anode with possible additional production of electricity. We studied the recovery of copper in an MFC using a bipolar membrane as a pH separator. Under anaerobic conditions, the maximum power density was 0.43 W/m(2) at a current density of 1.7 A/m(2). In the presence of oxygen, MFC performance improved considerably to a maximum power density of 0.80 W/m(2) at a current density of 3.2 A/m(2). Pure copper crystals were formed on the cathode, and no CuO or Cu2O was detected. Removal efficiencies of >99.88% were obtained. The cathodic recovery of copper compared to the produced electricity was 84% (anaerobic) and 43% (aerobic). The metallurgy MFC with the Cu2+ reducing cathode further enlarges the application range of MFCs.