微波-改性活性炭-Fenton试剂氧化法降解水中2,4-二氯酚

Degradation of 2,4-Dichlophenol by Microwave-Modified Activated Carbon-Fenton Reagent Oxidation Process

以经Fe2(SO4)3溶液浸渍改性的活性炭作催化剂、Fenton试剂作氧化剂,采用微波-改性活性炭-Fenton试剂氧化法降解水中的2,4-二氯酚。考察了改性活性炭加入量、H2O2与Fe2+摩尔比、Fenton试剂加入量、微波功率和2,4-二氯酚溶液初始pH对2,4-二氯酚降解效果的影响。在改性活性炭加入量1.0g/L、n(H2O2):n(Fe2+)=16.7(H2O2加入量6.0mmol/L、Fe2+加入量0.36mmol/L)、Fenton试剂加入量为6.36mmol/L、微波功率600W、微波辐射时间10min、2,4-二氯酚溶液初始pH为6.0的条件下,2,4-二氯酚降解率和TOC去除率分别可达98.7%和84.0%。

2,4-dichlophenol in water was degraded by microwave-modified activated carbon-Fenton reagent oxidation with activated carbon modified by dipping in Fe2 （SO4）3 solution as catalyst and Fenton reagent as oxidant. The factors affecting the degradation of 2,4-dichlophenol were investigated. The experimental results show that： when modified activated carbon dosage is 1.0 g/L, n （ H2O2 ） ： n（Fe^2＋ ） = 16.7 （ H2O2 dosage 6.0 mmoL/L and Fe2＋ dosage 0.36 mmoL/L）, Fenton reagent dosage is 6.36 mmol/L, microwave power is 600 W, microwave radiation time is 10 min and the initial pH of 2,4-dichlophenol solution is 6, the degradation rate of 2,4-dichlophenol and the removal rate of TOC can reach 98.7% and 84.0% respectively.