Kinetics study on decolorization of Reactive Red KN-3B by Citrobacter sp. CK3
- 环境生态－已发表论文 
采用脱色菌CITrObACTEr SP. Ck3,以活性红kn-3b染料为处理对象,在厌氧批式反应条件下,系统考察了PH值,温度和染料浓度对脱色反应速度的影响;通过动力学模拟及反应过程中染料的uV-VIS扫描图分析,探讨了脱色反应机理。结果表明:CITrObACTEr SP. Ck3对活性红kn-3b的脱色反应的适宜PH为7~9;脱色反应速度在温度为32℃时达到最大。染料初浓度从57 Mg/l逐渐增大到458 Mg/l时脱色率逐渐降低。脱色过程中染料的偶氮键发生断裂,脱色反应符合二级反应动力学。The kinetic modeling and mechanism with which Citrobacter sp.CK3 removed the textile dye,C.I.Reactive Red 180,from aqueous solution was investigated using different parameters,such as initial dye concentration,pH and temperature.In anaerobic batch experiments,the decolorization efficiency decreased with increase in initial dye concentration.The high decolorization rate was observed at pH of 7～9 and temperature of 32℃.The decolorization followed a second order kinetic model.The UV-Vis spectra analysis revealed that the decolorization process was azo bond cleaved reaction.