摘要
采用紫外光(UV)对二氯乙腈(DCAN)和二溴乙腈(DBAN)的去除效果进行研究,考察不同初始浓度、pH值、UV强度等因素对降解效果的影响。结果表明:DCAN和DBAN的去除率随其初始浓度的增加而上升。当DCAN和DBAN的初始浓度均为250μg/L时,其去除率达到最高分别为23. 26%和98. 12%。随着pH值的升高,DCAN的去除率逐渐上升,在pH值为9. 5时达到最高值25. 20%;DBAN的去除率呈先上升后下降的趋势,当pH值=7. 5时,去除率达到最大值96. 88%。UV强度的变化并没有对DCAN和DBAN产生明显影响,其中DCAN只有微量的提升。UV在以上实验条件下对DCAN和DBAN均有去除效果,其中对DBAN的去除效果较好。
The removal efficiency of DCAN and DBAN by UV was studied, and the influence of different initial concentration values, pH values, and UV intensity values on degradation performance was investigated. The results showed that: The removal rates of DCAN and DBAN were increased with the increase of the initial concentration: when the initial concentration was 250 μg/L, DCAN and DBAN removal rates reached the maximum values, respectively 23.26% and 98.12%;with the increase of pH value, the removal rate of DCAN increased gradually, up to the highest value 25.20% when pH value=9.5, while the removal rate of DBAN showed a trend of rising before declining, up to the highest value 96.88% when pH value=7.5. The change of UV intensity didn’t have a significant influence on DCAN and DBAN, and DCAN only had a slight increase. Both DCAN and DBAN could be removed by UV under the above experimental conditions, and UV had a better removal effect of DBAN.
作者
员建
徐彬
王浡谕
苑宏英
YUAN Jian;XU Bin;WANG Bo-yu;YU Hong-ying(School of Environmental and Municipal Engineering, Tianjin Chengjian University,Tianjing 300380,China;Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin 300380,China)
出处
《环境工程》
CAS
CSCD
北大核心
2019年第6期68-72,共5页
Environmental Engineering
基金
国家自然科学基金(51308374)
大学生创新创业项目(201810792032)
关键词
紫外光
二氯乙腈
二溴乙腈
影响因素
UV
dichloroacetonitrile(DCAN)
dibromoacetonitrile(DBAN)
influence factor
