摘要
饮用水中高致癌物风险物三氯乙酸,普遍存在且难以去除。采用紫外光光降解可在较短时间内去除饮用水中高浓度的三氯乙酸,150 min内去除率达到72%。结果表明,这是一种高效、环保、简便的去除方法。其光降解反应符合一级反应动力学模型。实验还考察了水样品pH及常见离子Mn2+、NO2-、NO3-和Fe3+对降解率的影响。
High carcinogens risk of trichloroacetic acid in drinking water removed. Trichloroacetic acid with high concentration can be removed from by using ultraviolet light. The removing rate reaches 72% efficient, environment-friendly and convenient method. The exists everywhere, and is difficult to be drinking water in a relatively short time within 150 min. The results show photodegradation reaction conforms that it is a highly to the pseudo-first order reaction kinetics. The effects of initial concentration, pH of water samples, and common ions, Mn2+, NO2-, NO3- and Fe3+, on degradation rate are investigated.
出处
《工业水处理》
CAS
CSCD
北大核心
2013年第2期67-69,共3页
Industrial Water Treatment
关键词
饮用水
三氯乙酸
紫外光降解
drinking water
trichloroacetic acid
UV-light degradation