微生物燃料电池回收废水中铬的研究进展

Research Progress on the Recovery of Chromium in Wastewater by Microbial Fuel Cells

近年来,随着矿山、冶金、电子、制革等行业的发展,工业废水的处理受到越来越多的关注。相对于工业废水中的其他污染物,工业废水中的重金属在经过适当的处理和回收后不仅能够减少对环境的污染,而且还可以带来经济效益。铬作为这些工业废水中产生的主要重金属,若不经过正确的处置将会对环境产生极大的危害。然而利用传统的方法回收工业废水中的铬仍存在一些局限性,如需要添加的化学试剂价格昂贵,处理后产生的污泥需要处理两次,设计工艺要求较高等。现在,生物电化学系统(Bioelectrochemical Systems,BES)正逐渐被用于从工业废水中回收铬。微生物燃料电池(Microbial Fuel Cells,MFCs)作为BES系统中的先进技术,由于其强大的可操作性和高回收率而具有较大的潜力。本文重点介绍了使用微生物燃料电池(MFCs)从工业废水中回收铬的技术。通过与传统技术的比较,评估了该技术在实际应用中的优势、局限性和发展前景,并研究了该技术的可持续性。

In recent years,with the development of mining,metallurgy,electronics,tanning and other industries,the treatment of industrial wastewater has received more and more attention.Compared with other pollutants in industrial wastewater,heavy metals in industrial wastewater can not only reduce environmental pollution after proper treatment and recycling,but also bring economic benefits.Chromium,as the main heavy metal produced in these industrial wastewaters,will be extremely harmful to the environment if not properly disposed of.However,there are still some limitations in the use of traditional methods to recover chromium in industrial wastewater,such as the high cost of chemical reagents that need to be added,the sludge generated after treatment needs to be treated twice,and the design process is more demanding.Now,bioelectrochemical systems(BES)are gradually being used to recover chromium from industrial wastewater.Microbial Fuel Cells(MFCs),as an advanced technology in BES systems,has good potential due to its strong operability and high recovery rate.This article focuses on technologies for recovering chromium from industrial wastewater using microbial fuel cells(MFCs).Through the comparison with traditional technology,the advantages,limitations and development prospects of the technology in practical application are evaluated,and the sustainability of the technology is studied.