复合吸附剂 PMAA/SiO2 对苯胺的吸附性能及机理。
Adsorption property and mechanism of composite adsorbent PMAA/SiO2 for aniline.
机构信息
Department of Chemical Engineering, North University of China, Taiyuan 030051, People's Republic of China.
出版信息
J Hazard Mater. 2010 Jun 15;178(1-3):499-504. doi: 10.1016/j.jhazmat.2010.01.109. Epub 2010 Jan 25.
In this paper, functional monomer methacrylic acid (MAA) was grafted onto the surface of silica gel particles using 3-methacryloxypropyl trimethoxysilane (MPS) as intermedia, and grafting particles PMAA/SiO(2) were prepared. The adsorption properties and mechanism of PMAA/SiO(2) towards aniline were researched through batch and column adsorption methods. The experimental results showed that PMAA/SiO(2) possesses strong adsorption ability for aniline with interaction of hydrogen bond. The saturated adsorption amount could reach up to 140 mg g(-1). The empirical Langmuir isotherm was found to agree well with the equilibrium adsorption data. pH and temperature were found to have great influence on the adsorption amount. Finally, PMAA/SiO(2) was observed to possess excellent reusability properties as well.
本文通过 3-甲基丙烯酰氧基丙基三甲氧基硅烷（MPS）作为中间体，将功能单体甲基丙烯酸（MAA）接枝到硅胶颗粒表面，制备了接枝颗粒 PMAA/SiO(2)。通过批量和柱吸附方法研究了 PMAA/SiO(2)对苯胺的吸附性能和机理。实验结果表明，PMAA/SiO(2)对苯胺具有很强的吸附能力，存在氢键相互作用。其饱和吸附量可达 140mg/g。经验 Langmuir 等温线与平衡吸附数据吻合较好。pH 和温度对吸附量有很大影响。最后，观察到 PMAA/SiO(2)具有良好的可重复使用性能。
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