4-氯酚废水Fenton氧化反应动力学研究

Kinetics of 4-Chlorophenol Degradation by Fenton

采用Fenton氧化技术对4-氯酚(4-CP)废水进行了氧化处理。研究结果表明:Fenton氧化对4-氯酚的去除效果非常明显,可在短时间内将4-氯酚降解成低分子有机物。根据Fenton氧化废水中污染物时发生化学反应的特性,利用半衰期法探讨了4-氯酚降解的反应级数,最终确定其在Fenton体系中氧化降解的表观反应级数为2.5。通过建立4-氯酚Fenton氧化降解的动力学数学模型,最终得出4-氯酚降解的动力学方程,反应动力学方程可表示为:r=k C1.9691C0.

In this paper,the degradation of 4- chlorophenol（ 4- CP） contaminated water by Fenton process was investigated. It was found that 4- CP could be removed efficiently by Fenton,and be degraded rapidly into low molecular weight organics. Based on the reaction characteristics of the contaminant oxidized by Fenton,degradation kinetics model of 4- CP was constructed,the half- life law was used to investigate the reaction order of 4- CP degradation,and the ultimately apparent reaction order was determined as 2. 5. The kinetics equation of 4- CP degradation was eventually obtained through experiments,which could be expressed as： r = k C1. 9691C0. 5309Fenton