摘要
采用臭氧氧化法处理对氯苯酚溶液,研究了pH、温度、气体流量和对氯苯酚初始浓度等因素对处理效果的影响。反应体系pH越高,越有利于氧化反应。用自制的载有Fe、Co、Mn氧化物的活性炭纤维(ACF)催化剂进行催化臭氧氧化对氯苯酚的实验。结果表明,Fe/ACF显示了较好的催化性能和活性。通过在反应体系中加入一定量的羟基自由基猝灭剂,初步探讨了其催化机理,即催化剂和臭氧反应生成了氧化性极强的羟基自由基。
Removal of p-chlorophenol （PCP） by ozone oxidation in the presence of metal coated activated carbon fiber （M/ACF） was studied to determine the effects of M/ACF catalyst, pH, temperature, initial concentration, and ozone-oxygen feed rate. The PCP removal rate increased with increasing pH, temperature, and gaseous feed rates the removal rate declined at a higher initial PCP concentration when the availability of ozone might have become the limiting factor. The presence of M/ACF significantly enhanced the PCP removal, Fe was the most effective metal catalyst, followed by Mn, Co. The enhancement was likely due to the highly reactive hydroxyl radicals produced by catalytic oxidation.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2007年第6期443-445,共3页
Environmental Pollution & Control
