【摘要】 二氯苯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邻,间,对-二氯苯的模拟废水。辐照剂量分别为35kGy、70kGy、105kGy、140kGy、210kGy。实验表明电子束能够降解氯苯类废水且效果很好,邻二氯苯、间二氯苯、对二氯苯的降解率为50%时所需剂量分别为:38kGy、35kGy、46kGy。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在2—3。根据实验结果,本文给出了二氯苯的辐照降解机理并初步探讨了辐解中间产物的类型。更多还原

【Abstract】 Dichlorobenzenes are a kind of organic contaminations which are usually difficult to be decomposed by normal methods. Decomposition of O-, M-, P-dichlorobenzenes by electron beam (1 mA, 1.5 MeV) irradiation was studied in this paper. The irradiation doses of electron beam are 35 kGy, 70 kGy, 105 kGy, 140 kGy, 210 kGy, respectively. The results show that dichlorobenzenes can be decomposed efficiently with electron beam, the needed doses are 38 kGy, 35 kGy, 46 kGy, respectively, for O-, M-, P-dichlorobenzene with a degrading rate of 50%. The mass concentration of chlorine ion increased during irradiation and pH of irradiated solution was at the range of 2—3. Mechanism of dichlorobenzene decomposition is discussed in the paper according to the results of experiment.更多还原