摘要
为研究水溶液中五氯酚的γ辐照降解效果,该文测定了辐照前后的五氯酚、氯离子浓度以及生物毒性的变化情况,考察了五氯酚初始浓度对其辐解效果的影响。结果表明:γ辐照可有效降解水溶液中的五氯酚,降解过程符合准一级动力学方程,五氯酚初始浓度为25、50mg.L-1,辐照剂量在4、6kGy时,其去除率可达100%。辐照可明显降低五氯酚溶液的生物毒性。
The objective of this work is to investigate the γ-irradiation treatment of pentachlorophenol （PCP） in aqueous solution. The variation of the PCP and chloride concentration and the bio-toxicity was measured before and after irradiation. The effect of the initial PCP concentration on the degradation was also investigated, The experimental results show that γ-irradiation is able to successfully degrade PCP in aqueous solution and the radiolysis of PCP is in accordance with the pseudo-first order kinetic model. For initial PCP concentration of 25 mg·L-1 with a radiation dosage of 4 kGy, the degradation efficiency was 100%. The same result was obtained with an initial concentration of 50 mg·L-1 and a dosage of 6 kGy. The bio-toxicity of PCP was also reduced after irradiation.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第9期1483-1486,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金资助项目(50325824
50678089)
教育部优秀青年教师计划项目
关键词
辐照分解
五氯酚
脱氯
动力学
radiolysisl pentachlorophenol（PCP）
dechlorination kinetics
