Selective sorption of perfluorooctane sulfonate on molecularly imprinted polymer adsorbents
Selective sorption of perfluorooctane sulfonate on molecularly imprinted polymer adsorbents
复制标题
分子印迹聚合物吸附剂选择性吸附全氟辛烷磺酸
DOI：
10.1007/s11783-009-0017-4
复制
发表时间：
2009-03
影响因子：
--
通讯作者：
Huang, Jun
中科院分区：
文献类型：
--
作者：
Deng, Shubo;Yu, Qiang;Yu, Gang;Shuai, Danmeng;Huang, Jun
全氟辛烷磺酸（PFOS）是一种潜在的持久性有机污染物，在水环境中被广泛检测到，近年来引起了人们的极大关注。全氟辛烷磺酸非常稳定，难以用常规技术分解。吸附可能是一种有吸引力的方法，以消除它从水中。以全氟辛烷磺酸（PFOS）为目标化合物，通过4-乙烯基吡啶的聚合反应，在不同的制备条件下制备了分子印迹聚合物（MIP）吸附剂。以全氟辛酸（PFOA）为模板的分子印迹吸附剂具有良好的印迹效果，能选择性地去除水溶液中的PFOS。研究了吸附动力学、吸附等温线以及pH、盐和竞争性阴离子对吸附的影响。实验结果表明，MIP吸附剂对PFOS的吸附速度非常快，且具有高度的选择性。在1 h内达到快速吸附平衡归因于精细吸附剂的表面吸附。吸附等温线表明，高浓度PFOS时，MIP吸附剂对PFOS的吸附选择性降低，这可能是由于PFOS在MIP表面形成了双电层吸附和胶束.全氟辛烷磺酸在MIP吸附剂上的吸附主要是由吸附剂表面质子化乙烯基吡啶与阴离子全氟辛烷磺酸之间的静电相互作用决定的。所制备的分子印迹吸附剂可用于水和废水处理中选择性去除全氟辛烷磺酸。
Perfluorooctane sulfonate (PFOS), as a potential persistent organic pollutant, has been widely detected in water environments, and has become a great concern in recent years. PFOS is very stable and difficult to decompose using conventional techniques. Sorption may be an attractive method to remove it from water. In this study, the molecularly imprinted polymer (MIP) adsorbents were prepared through the polymerization of 4-vinylpyridine under different preparation conditions in order to remove perfluorooctane sulfonate (PFOS) from water. The MIP adsorbents using perfluorooctanoic acid (PFOA) as the template had good imprinting effects and could selectively remove PFOS from aqueous solution. The sorption behaviors including sorption kinetics, isotherms, and effect of pH, salt, and competitive anions were investigated. Experimental results showed that the sorption of PFOS on the MIP adsorbents was very fast, pH-dependent, and highly selective. The achieved fast sorption equilibrium within 1 h was attributed to the surface sorption on the fine adsorbents. The sorption isotherms showed that the sorption selectivity of PFOS on the MIP adsorbents decreased at high PFOS concentrations, which may be due to the double-layer sorption and the formation of PFOS micelles on the sorbent surface. The sorption of PFOS on the MIP adsorbents was mainly dominated by the electrostatic interaction between the protonated vinylpyridine on the adsorbent surface and the anionic PFOS. The prepared MIP adsorbents can potentially be applied in water and wastewater treatment for selective removal of PFOS.
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影响因子：
11.4
作者：
C. Tang;Q. Fu;C. Criddle;J. Leckie
通讯作者：
C. Tang;Q. Fu;C. Criddle;J. Leckie
影响因子：
2.3
作者：
E. Kissa
通讯作者：
E. Kissa
影响因子：
11.4
作者：
Nakata, Haruhiko;Kannan, Kurunthachalam;Takemura, Akira
通讯作者：
Takemura, Akira
影响因子：
11.4
作者：
Kannan, K;Koistinen, J;Giesy, JP
通讯作者：
Giesy, JP
影响因子：
12.8
作者：
Qiang Yu;Ruiqi Zhang;S. Deng;Jun Huang;Gang Yu
通讯作者：
Qiang Yu;Ruiqi Zhang;S. Deng;Jun Huang;Gang Yu