铁铜双金属类芬顿体系处理氯酚废水的研究  

Decontamination of chlorophenol wastewater by Fe-Cu bimetal-based Fenton-like process

作　　者：张玥 梅家龙 任伟 孙思瑶 张有贤[1] ZHANG Yue;MEI Jia-long;REN Wei;SUN Si-yao;ZHANG You-xian(College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]兰州大学资源环境学院,甘肃兰州730000

出　　处：《应用化工》2022年第6期1619-1623,共5页Applied Chemical Industry

基　　金：中央高校基本科研业务费专项(lzujbky-2017-it103)。

摘　　要：利用铁铜双金属催化剂对2,4-DCP、2,4,6-TCP模拟废水进行了类芬顿处理,探究铁铜掺杂比、H_(2)O_(2)浓度、催化剂投加量、模拟废水初始pH以及催化剂的循环使用次数对2,4-DCP、2,4,6-TCP去除效率的影响,并对催化反应体系的机理进行了探讨。结果表明,铁铜双金属催化剂对氯酚废水有较好的去除效果,在污染物浓度为10 mg/L时,反应的最佳条件为:H_(2)O_(2)浓度为5 mmol/L,催化剂投加量为1.0 g/L,溶液初始pH为4。在此条件下,水中的污染物能够完全去除。催化剂具有良好的重复利用性;自由基猝灭实验表明,羟基自由基是主要的活性物种。Fe-Cu bimetallic catalyst was used to treat simulated 2,4-DCP and 2,4,6-TCP wastewater.The effects of doping ratio,H_(2)O_(2)concentration,catalyst dosage,initial pH of simulated wastewater and recycling times of catalyst on removal efficiency were investigated.Main radicals involved in were identified by radical quenching experiments.The results show that the Fe-Cu bimetallic catalyst obtained by displacement reaction has good removal effect on chlorophenol wastewater and good reusability.When the pollutant concentration is 10 mg/L,the optimum conditions for the reaction are as follows:H_(2)O_(2)concentration is 5 mmol/L,catalyst dosage is 1.0 g/L,and the initial pH of the solution is 4.Under this condition,the pollutants in the water can be completely removed.The mechanism of catalytic reaction system was discussed,and hydroxyl radical was the main active species.

关 键 词：双金属催化剂 类芬顿 氯酚废水 自由基 

分 类 号：TQ20[化学工程—有机化工]