针对传统Fenton体系Fe(Ⅲ)累积和pH适用范围过窄等缺点,采用羟胺(HA)强化的HA-Fenton体系,以对氯苯酚(4-CP)为目标污染物进行降解实验,考察了Fe(Ⅱ)投加量、H2O2投加量、HA投加量和溶液pH等工艺条件对4-CP去除率的影响.实验结果表明:HA-Fenton体系适用于酸性和弱酸性条件,最佳pH范围为3.0~4.0;在溶液pH为3.0、Fe(Ⅱ)投加量为5.0 μmol/L、H2O2投加量为0.4 mmol/L、HA投加量为0.20 mmol/L的最适条件下,反应10 min, 4-CP去除率达64.25 %.%Aiming at drawbacks of the traditional Fenton system,such as the accumulation of Fe(Ⅲ) and the narrow pH range,the experiment for degradation of p-chlorophenol(4-CP) using hydroxylamine(HA) enhance Fenton system (HA-Fenton system) was carried out. The effects of Fe(Ⅱ) amount,H2O2amount,HA amount and solution pH on 4-CP removal rate were investigated. The experimental results indicated that:The HA-Fenton system was suitable for acidic and weak acidic conditions with 3.0-4.0 of the optimal pH range;Under the conditions of solution pH 3.0,Fe(Ⅱ) amount 5.0 μmol/L,H2O2amount 0.4 mmol/L,HA amount 0.20 mmol/L and reaction time 10 min,the 4-CP removal rate reached 64.25 %.
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