Electron Beam Grafted Polymer Adsorbent for Removal of Heavy Metal Ion from Aqueous Solution
Electron Beam Grafted Polymer Adsorbent for Removal of Heavy Metal Ion from Aqueous Solution
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DOI：
10.1080/01496390600851673
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发表时间：
2006-10
影响因子：
2.8
通讯作者：
Virendra Kumar;Y. K. Bhardwaj;K. A. Dubey;C. V. Chaudhari;N. K. Goel;J. Biswal;S. Sabharwal;K. Tirumalesh
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文献类型：
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作者：
Virendra Kumar;Y. K. Bhardwaj;K. A. Dubey;C. V. Chaudhari;N. K. Goel;J. Biswal;S. Sabharwal;K. Tirumalesh
摘要采用2 MeV电子束加速器将丙烯腈（AN）辐照后接枝到非织造热粘合聚丙烯（PP）片材上，合成了一种电子束接枝吸附剂。接枝的聚（丙烯腈）链进行化学改性，以将腈基转化为偕胺肟（AMO）基团，这是一种负责从水溶液中吸收金属离子的螯合基团。各种实验变量，即剂量，剂量率，温度和溶剂组合物上的接枝程度的影响进行了研究。测试了用偕胺肟基团接枝的PP（AMO-g-PP）作为吸附剂从水溶液中去除重金属离子如Co2+、Ni 2+、Mn 2+和Cd 2+的适用性。Langmuir和Freundlich吸附模型被用来调查这些离子的吸附类型。吸附剂对重金属离子的吸附能力顺序为Cd ~（2+）> Co ~（2+）> Ni ~（2+）> Mn ~（2+）。这些离子的吸附动力学表明，Cd 2+的吸附速率比其他离子的研究。
Abstract An electron beam grafted adsorbent was synthesized by post irradiation grafting of acrylonitrile (AN) on to a non‐woven thermally bonded polypropylene (PP) sheet using 2 MeV electron beam accelerator. The grafted poly(acrylonitrile) chains were chemically modified to convert a nitrile group to an amidoxime (AMO) group, a chelating group responsible for metal ion uptake from an aqueous solution. The effect of various experimental variables viz. dose, dose rate, temperature, and solvent composition on the grafting extent was investigated. PP grafted with the amidoxime group (AMO‐g‐PP) was tested for its suitability as an adsorbent for removal of heavy metal ions such as Co2+, Ni2+, Mn2+, and Cd2+ from aqueous solution. Langmuir and Freundlich adsorption models were used to investigate the type of adsorption of these ions. The adsorption capacities of the adsorbent for the metal ions were found to follow the order Cd2+>Co2+>Ni2+>Mn2+. The kinetics of adsorption of these ions indicated that the rate of adsorption of Cd2+ was faster than that of other ions studied.