Decolorization of azo dyes by a marine exoelectrogenic bacterium Morganella sp.8121 under high salt conditions
1.Introduction Azo dyes, characterized by the presence of one or more azo bonds, are one of the most important pollutants which may cause serious hazards to the ecological environment and human health. It is generally believed that the azo bond reduction is the first and also the rate-limiting step in the mineralization of azo dyes during anaerobic-aerobic process. Due to their high polarities and complex structures, many azo dyes, especially for sulphonated azo dyes, are difficult to diffuse through the cell wall to accept the reducing equivalents, which are released during the anaerobic oxidation of organic substrates In order to enhance the equivalents translocation produced by during microbial metabolism, artificial redox compounds are badly needed. But in the continuous dye wastewater treatment system, these redox mediators are easy to be washed out of the bioreactor, and some of exogenous mediators are also poisonous to microbes.
Conghui Zou Biao Wang Xia Huang Fangcheng Xu
College of Oceanography and Environmental Science of Xiamen University, Xiamen 361005,China Tsinghua University, Department Environmental Science & Engineering, State Key Joint Lab Environment College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
国际会议
北京
英文
178-179
2011-11-24（万方平台首次上网日期，不代表论文的发表时间）