用185nm UV降解水中二苯甲酮和孔雀石绿  

A Study on the degradation path of diphenyl ketone and malachite green in water by 185nm UV irradiation

作　　者：闻瑞梅[1] 葛伟伟 

机构地区：[1]同济大学电子信息学院,上海200092 [2]山东临沂市环境检测站,临沂276000

出　　处：《环境科学学报》2007年第4期587-594,共8页Acta Scientiae Circumstantiae

摘　　要：研究了185nm紫外光降解水中二苯甲酮和孔雀石绿和总有机碳(TOC)的规律.研究了浓度、体积、流速、pH等因素对二苯甲酮的降解效果的影响.通过改变污染物初始浓度、体积、流量、pH值以及添加无机离子来讨论185nm紫外光对孔雀石绿的降解效果,探讨了降解的最佳条件.降解达到了治理水中二苯甲酮和孔雀石绿污染的目的.用这种方法降解水中二苯甲酮和孔雀石绿,去除率能够达到99.9%以上,是一种非常有效的治理污染方法.实验同时验证了185nmUV降解水中的二苯甲酮和孔雀石绿符合准一级动力学规律.In this paper the reduction process of diphenyl ketone, malachite green, and total organic carbon （TOC） in water by using 185nm UV irradiation was studied. The effect of initial pollutant concentration, volume, flow rate and initial pH values on diphenyl ketone degradation was discussed. The effectiveness of degradation of malachite green was studied by changing initial malachite green concentration, volume, flow rate, initial pH values and concentration of added inorganic ions. The optimum condition for removal of diphenyl ketone and malachite green in water was discussed. The 185nm UV irradiation has been proved to be effective for removal of diphenyl ketone and malachite green in water with efficiency of above 99.9%. The kinetics rule for degradation of diphenyl ketone and malaclite green is discussed. The degradation reaction is found to lot for pseudo-first order reaction.

关 键 词：185nm紫外线 降解 二苯甲酮 孔雀石绿 

分 类 号：X703[环境科学与工程—环境工程]