电子束辐照降解氯苯类废水  

Decomposition of Chlorobenzenes with Electron Beam

作　　者：王艳丽[1] 吴明红[1] 焦正[1] 顾建忠[1] 施文彦[1] 包伯荣[2] 

机构地区：[1]上海大学射线应用研究所,上海201800 [2]上海大学理学院化学系,上海200436

出　　处：《精细化工》2005年第1期53-55,共3页Fine Chemicals

基　　金：上海市青年科技启明星项目资助(03QB14017)~~

摘　　要：氯苯类是重要的有机污染物,采用常规处理方法难以降解。利用束流为1mA、电子束能量为1 5MeV的高能电子束辐照处理氯苯、邻,间,对 二氯苯、1,2,4 三氯苯5种氯苯类化合物的模拟废水。辐照剂量分别为35、70、105、140、210kGy。实验表明,电子束能够降解氯苯类废水,邻二氯苯、间二氯苯、对二氯苯、氯苯降解率为50%时所需剂量分别为:38、35、46、206kGy。相同剂量下各化合物的降解率顺序为:氯苯<二氯苯<1,2,4 三氯苯,辐照降解过程中氯离子的质量浓度增加,辐照后溶液呈强酸性,pH=2～3。Chlorobenzenes are a kind of organic contaminants which are difficult to be decomposed by normal methods.Decomposition of five organic compounds including chlorobenzene ,o-,m-,p-dichlorobenzene and trichlorobenzene with electron beam(current:1 mA,energy:1.5 MeV) were studied.Radiation doses of the electron beam were 35,70,105,140,210 kGy respectively.The results show that chlorobenzenes can be decomposed efficiently with electron beam.At the same dose,the decomposition rates of the chlorobenezenes are as follows:chlorobenzene<dichlorobenzene<1,2,4-trichlorobenzene.Doses needed for 50% degradation of o-,m-,p-dichlorobenzene and chlorobenzene are 38,35,46 and 206 kGy respectively.The mass concentration of chlorine ion increases during irradiation and pH of the irradiated solution is at the range of 2～3.

关 键 词：电子束 降解 废水 氯苯类 

分 类 号：TQ085.4[化学工程]