Department of Chemistry, Bharathiar University, Coimbatore 641 046, Tamilnadu, India.
PG and Research Department of Chemistry, D.K.M College for Women, Vellore 632 001, Tamilnadu, India.
Int J Biol Macromol. 2017 Nov;104(Pt B):1578-1585. doi: 10.1016/j.ijbiomac.2017.01.142. Epub 2017 Feb 4.
The present work was designed to remove toxic metals chromium and copper using the double grafted copolymer Chitosan-g-Maleic anhydride-g-ethylene dimethacrylate. The graft copolymer was synthesized through chain polymerization reaction using ceric ammonium nitrate as the initiator. Prepared Chitosan-g-Maleic anhydride-g-ethylene dimethacrylate was used in order to remove the heavy metals chromium and copper from aqueous solutions of 200ppm/L concentration proceeding batch adsorption process by varying the parameters such as adsorbent dose, contact time, pH and initial concentration of the metal solution. The experimental data were equipped with isotherm models such as Langmuir and Freundlich and pseudo-first order and pseudo-second order kinetics. The calculated results revealed that the adsorption favours Freundlich isotherm and follows pseudo-second order kinetics.
本工作旨在使用双接枝共聚物壳聚糖-马来酸酐-二乙烯基苯来去除有毒金属铬和铜。接枝共聚物通过使用硝酸铈铵作为引发剂的链聚合反应合成。制备的壳聚糖-马来酸酐-二乙烯基苯用于通过改变吸附剂剂量、接触时间、pH 值和金属溶液的初始浓度等参数，从 200ppm/L 浓度的水溶液中去除重金属铬和铜，进行批量吸附过程。实验数据配备了等温模型，如朗缪尔和弗伦德利希以及伪一级和伪二级动力学。计算结果表明，吸附有利于弗伦德利希等温线并遵循伪二级动力学。
