Fe2O3@浮石催化臭氧降解水中有机物的实验研究  

Catalytic Ozonation of Organics Over Fe2O3@Pumice in Water

作　　者：袁磊[1] 张继舟[1] 王立民[1] Yuan Lei;Zhang Jizhou;Wang Limin(Institute of Natural Resources and Ecology,HAS.National and Provincial Joint Engineering Laboratory of Wetlands and Ecological Conservation,Harbin 150040,China)

机构地区：[1]黑龙江省科学院自然与生态研究所湿地与生态保育国家地方联合工程实验室,哈尔滨150040

出　　处：《国土与自然资源研究》2023年第2期94-96,共3页Territory & Natural Resources Study

基　　金：中央引导地方科技发展专项项目(ZY20B15);黑龙江省科学院科学研究基金(KY2022ZR04)。

摘　　要：以天然浮石载体,氯化铁为活性组分金属源,采用等体积浸渍法制备了Fe2O3@浮石催化剂。对比研究Fe2O3@浮石和浮石催化臭氧分解水中微量对氯硝基苯。实验结果表明,与单独臭氧氧化相比,Fe2O3@浮石和浮石催化臭氧化工艺可以明显提高水中对氯硝基苯的去除率,分别为92.5%和71.2%。焙烧温度对Fe2O3@浮石活性影响最为显著,350℃为最佳焙烧温度。另外,通过叔丁醇抑制实验可以说明催化臭氧化过程遵循羟基自由基机理。Pumice-supported Fe2O3was prepared by wetness impregnation using iron salt as metal precursor substance.Catalytic ozonation of p-chloronitrobenzene in water was conducted,wherein pumice and Fe2O3@pumice were used as the catalysts.It was found that the processes of ozonation/Fe2O3@pumice and ozonation/pumice could increase the removal efficiency by 92.5%and 71.2%,respectively,compared with that achieved by sole ozonation.Heat treatment show a very strong influence on the catalytic ozonation of p-chloronitrobenzene,especially 350℃.Moreover,tert-Butyl alcohol remarkably increases the removal efficiency,which indicates that p-chloronitrobenzene degradation follows the mechanism of hydroxyl radical oxidation.

关 键 词：氧化铁 浮石 对氯硝基苯 催化臭氧化 羟基自由基 

分 类 号：TU991[建筑科学—市政工程] X703.5[环境科学与工程—环境工程]