在废水处理方面,微生物燃料电池具有在净化废水的同时回收能源或有价值化学品等突出优点,已经成为人们研究的热点。在微生物燃料电池中,金属离子能直接或者间接参与阳极和阴极过程,其对溶液的电导率、反应器的内阻和功率密度、产电微生物的活性等都有重要影响。本文综述了金属离子参与微生物燃料电池的机制及其影响因素,并且介绍了微生物燃料电池在去除废水或者固体废弃物中重金属离子方面的优势和发展前景。
Many researchers focus on the microbial fuel cells (MFCs) treating wastewater, due to their, distinguished advantages of water purification as well as recovering energy or valuable chemicals. In microbial fuel cells, metal ions play an important role in the conductivity of solution, reactor resistance, power density, electricity production and activity of microorganism. Additionally, the metal ions are also involved into the anode or cathode reaction processes directly or indirectly in the MFCs. The mechanism of MFCs process participated with several metal ions and their influence factors are reviewed in this paper. Moreover, we discuss the advantages and development prospects of the MFCs removing heavy metal ions in wastewater or solid waste.