文献类型：期刊文献

中文题名：紫外活化过硫酸钠技术处理水溶液中的1,1,1-三氯乙烷

英文题名：UV Activated Persulfate Technique for 1,1,1-Trichloroethane Degradation in Aqueous Solution

作者：顾小钢[1];吕树光[1];徐旻辉[1];邱兆富[1];隋倩[1];林匡飞[1]

机构：[1]华东理工大学,国家环境保护化工过程环境风险评价与控制重点实验室,上海市功能性材料化学重点实验室,上海200237

年份：2012

卷号：25

期号：12

起止页码：1393

中文期刊名：环境科学研究

外文期刊名：Research of Environmental Sciences

收录：CSTPCD;;国家哲学社会科学学术期刊数据库;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2011_2012】；

基金：国家环境保护公益性行业科研专项(201109013);上海市自然科学基金面上项目(12ZR1408000)

语种：中文

中文关键词：1;1;1-三氯乙烷;过硫酸钠;紫外活化;受污染地下水

外文关键词：1,1,1-trichloroethane ; persulfate ; UV- or VUV activation ; contaminated groundwater

摘要：分别采用不同的紫外光源(UV、VUV)活化Na2S2O8处理水溶液中的TCA(1,1,1-三氯乙烷),考察溶液初始pH、阴离子及HA(腐殖酸)对TCA降解过程的影响.结果表明:UV/Na2S2O8体系和VUV/Na2S2O8体系中,TCA可分别在60和30 min内完全去除,氧化降解过程符合准一级反应动力学方程,反应动力学常数分别为0.06和0.14 min-1;溶液初始pH越高越不利于TCA的降解;Cl-和HCO3-的存在能够抑制TCA降解,HCO3-的抑制效果较Cl-更为显著;ρ(HA)大于10 mg/L时能明显降低TCA的去除率.2种体系均能使TCA基本脱氯,不产生二次污染.
Photodegradation of 1,1,1-trichloroethane （ TCA）, a kind of chlorinated pollutant, by means of UV/Na2S2O8 and VUV/ Na2S2O8 processes was investigated. The effects of various factors including solution pH, anions （Cl- and HCO3 - ） and humic acid were evaluated. The results showed that TCA could be completely removed by UV/Na2S2O8 and VUV/Na2S2O8 processes in 60 min and 30 min, respectively. TCA degradation in both processes fitted with the pseudo-first-order kinetic model, with rate constants of 0.06 and 0. 14 min-1, respectively. The oxidation rate decreased with solution pH increase. Both C;- and HCO3 - anions, as well as high concentration of HA （ 10 mg/L）, adversely affected TCA degradation performance. TCA could be almost completely dechlorinated in both processes without the production of other pollutants.