对氯苯胺水溶液的紫外光降解研究  

UV-induced degradation of 4-chloroaniline in aqueous solution

作　　者：蒲长永[1,2] 曹长青[1] 张敬[1,2] 马红娟[1,2] 王敏[1] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800 [2]中国科学院研究生院,北京100049

出　　处：《辐射研究与辐射工艺学报》2009年第4期207-211,共5页Journal of Radiation Research and Radiation Processing

基　　金：国家青年科学基金项目(20703056)资助

摘　　要：用185nm/254nm紫外光灯对4-氯苯胺水溶液进行光照降解,研究了该物质的辐照降解特性。通过对4-氯苯胺去除率、总有机碳(TOC)去除率、脱氯等过程的研究,探讨了4-氯苯胺初始浓度、pH值、不同通气条件、投加H2O2等因素对4-氯苯胺溶液降解和矿化效果的影响规律。结果表明,紫外光辐照能有效降解4-氯苯胺,在空气饱和、H2O2浓度为10mmol/L的条件下,辐照时间为2h时,4-氯苯胺的降解率可达99%,TOC去除率可达50%。Photo-degradation of 4-chloroaniline （4-CA） in aqueous solutions was studied by UV irradiation. The degradation efficiency of 4-CA and total organic carbon （TOC） removal were investigated by changing the irradiation UV wavelength, initial concentration of 4-CA, pH value, adding H202 and saturated with different gases in the photo-degradation experimental system. The results show that the photo-degradation of 4-CA is very effective, with removal rates at about 99% and 50% of 4-CA and TOC, respectively, after 1 hour irradiation time when 10mmol/L H2O2 was added to 1mmol/L 4-CA aqueous solution and saturated with air, which implies that the UV irradiation technique might be a promising process for the treatment of 4-CA waste effluents.

关 键 词：紫外光 4-氯苯胺 降解率 总有机碳 

分 类 号：X131.2[环境科学与工程—环境科学]