固载Fe(Ⅲ)-H2O2-UV降解2,4-二氯苯酚的研究

摘要

Degradating 2,4-dichlorophenol with solid Fe(Ⅲ)-H2O2-UV. Effect of the time of illumination , pH value, the concentration of H2 O2, the amount of loading iron resin, and the initial concentration of 2,4-dichlorophenol of the degradation were discussed. The results indicated that the optimum condition are as follows: the time of ultraviolet illumination 120 min.pH >2,the initial concentration of 2,4-dichlorophenol is 8 μg/mL, proper H2O2 concentration is 0. 003 mol/L. Amount of iron be loaded is 0. 02～ 0. 1 g. In this condition,2,4-dichlorophenol degradation rate reach 94. 8%.%采用固载Fe(Ⅲ)-H2O2-UV降解2,4-二氯苯酚,探讨了光照时间、pH值、H2O2浓度、载铁树脂用量以及2,4-二氯苯酚初始浓度等因素对降解率的影响.结果表明,固载Fe3+-H2O2-UV降解2,4-二氯苯酚的适宜工艺条件为:2,4-二氯苯酚初始浓度为8 μg/mL,pH ＞2,H2O2浓度为0.003 mol/L,载铁树脂用量0.02～0.1 g,紫外光照时间达120 min.在此条件下,2,4-二氯苯酚降解率可达94.8％.