摘要
为控制水中消毒副产物溴酸盐,对添加溴酸盐的水进行静态吸附实验,研究活性炭（GAC）对溴酸盐的吸附性能。结果表明,2种GAC对溴酸盐的吸附规律符合Freundlich吸附等温线。25℃条件下,对于GAC1,当水中初始BrO3-的质量浓度〉50μg/L时,0.25 h达到吸附平衡,溴酸盐去除率在88.72%-97.87%;当初始BrO3-的质量浓度〈50μg/L时,24 h达到吸附平衡,溴酸盐去除率在22.54%-97.97%。对于GAC2,1 h左右基本达到吸附平衡,溴酸盐去除率在48.41%-71.78%。
To control the bromate, static adsorption testing was employed by the water added with various concentrations bromate to estimate the bromate adsorption by granular activated carbon. It was found that the bromate adsorption of both GACs conformed to the Freundlich model of adsorption isotherms.The time for adsorption equilibrium for GAC1 at 25 ℃ was 0.25 h when the initial mass concentration of BrO3-were 50 μg/L, and the bromate reduction rates were between 88.72%~97.87%. When the initial mass concentration of BrO3-were 50 μg/L, the time and the reduction rates were respectively24 h and 22.54%~97.97% for GAC1. The adsorption equilibrium for GAC2 at 25 ℃ was basically attained in 1h and the removal rates of bromate were between 48.41%-71.78%.
出处
《水处理技术》
CAS
CSCD
北大核心
2014年第6期36-38,42,共4页
Technology of Water Treatment
基金
国家科技型中小企业技术创新基金(11C26244405503)
关键词
溴酸盐
饮用水
活性炭
吸附等温线
去除率
bromate
drinking water
granular activated carbon （GAC）
adsorption isotherms
reduction rate
