D301树脂对水中氟虫腈的吸附去除研究  

Adsorption of Fipronil in Aqueous Solution by Resin D301

作　　者：徐萌[1] 仇雁翎[1] 朱志良[1] 程炳宏[1] 赵建夫[1] 

机构地区：[1]同济大学环境科学与工程学院长江水环境教育部重点实验室,上海200092

出　　处：《环境科学与技术》2013年第1期1-4,共4页Environmental Science & Technology

基　　金：国家科技支撑计划课题(2006BAJ04A07);国际科技合作计划项目(2010DFA91800)

摘　　要：文章研究D301树脂对水溶液中氟虫腈的吸附行为,考察了吸附剂投加量和溶液pH值对吸附效果的影响,对吸附等温线和吸附动力学进行了探讨,并选择不同模型对吸附曲线进行拟合。结果表明,当氟虫腈溶液初始浓度为2 mg/L,吸附剂投加量为0.5 g/L时,氟虫腈的去除率达到100%;溶液pH值在3~9范围内变化时,对吸附的影响较小,相对而言pH=7的吸附效果最好;D301树脂对氟虫腈的吸附等温线满足Langmuir吸附等温式和Freundlich吸附等温式,相关系数R2分别为0.994和0.991;吸附动力学符合Lagergren一级反应方程。总体来说,D301树脂对氟虫腈的吸附效果较好。Removal of fipronil in aqueous solution by resin D301 under different conditions was studied,including the effect of different adsorbent dosages and pH on the removal efficiency.The adsorption isotherm and kinetics were investigated as well.Results showed that pH of fipronil solution had a little influence to adsorption efficiency,although a relative good removal rate of fipronil was observed at pH 7 among the studied pH range of 3 to 9.When initial concentration of fipronil solution was 2 mg/L and dosage of resin D301 was 0.5 g/L,the removal efficiency of fipronil reached 100%.Adsorption isotherm followed both Langmuir equation and Freundlich equation,with the correlation coefficients of 0.994 and 0.991 respectively.Adsorption kinetics also followed the Lagergren pseudo-first-order reaction.

关 键 词：氟虫腈 D301树脂 吸附 

分 类 号：X703.1[环境科学与工程—环境工程]