功能化聚(羟乙基甲基丙烯酸酯)接枝椰壳纤维对镉(II)的吸附特性。
Adsorption characteristics of cadmium(II) onto functionalized poly(hydroxyethylmethacrylate)-grafted coconut coir pith.
机构信息
Department of Chemistry, University of Kerala, Kariavattom, Trivandrum, Kerala 695 581, India.
出版信息
Bull Environ Contam Toxicol. 2010 Jul;85(1):42-7. doi: 10.1007/s00128-010-0013-1. Epub 2010 May 7.
This study explored the feasibility of utilizing a novel adsorbent, poly(hydroxyethylmethacrylate)-grafted coconut coir pith with carboxyl functionality (PGCP-COOH) for the removal of cadmium(II) from water and wastewater. Maximum removal of 99.9% was observed for an initial concentration of 25 mg/L at pH 6.0 and adsorbent dose of 2.0 g/L. The first-order reversible kinetic model and Langmuir isotherm model were resulted in high correlation coefficients and described well the adsorption of Cd(II) onto PGCP-COOH. The complete removal of 22.4 mg/L Cd(II) from fertilizer industry wastewater was achieved by 2.0 g/L PGCP-COOH. The reusability of the PGCP-COOH for several cycles was demonstrated using 0.1 M HCl solution.
本研究探索了利用新型吸附剂——具有羧基官能团的聚(羟乙基甲基丙烯酸酯)接枝椰子椰壳纤维（PGCP-COOH）从水中和废水中去除镉（II）的可行性。在初始浓度为 25mg/L、pH 值为 6.0 和吸附剂用量为 2.0g/L 的条件下，观察到最大去除率为 99.9%。一级可逆动力学模型和 Langmuir 等温线模型得出的相关系数较高，很好地描述了 Cd(II)在 PGCP-COOH 上的吸附。通过 2.0g/LPGCP-COOH，可从肥料工业废水中完全去除 22.4mg/L 的 Cd(II)。使用 0.1M HCl 溶液证明了 PGCP-COOH 在几个循环中的可重复使用性。
Zotero 插件