Evaluation of chelate and cation exchange resins to remove copper ions
Evaluation of chelate and cation exchange resins to remove copper ions
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DOI：
10.1016/j.powtec.2016.06.011
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发表时间：
2016-11-01
影响因子：
5.2
通讯作者：
Pehlivan, Erol
中科院分区：
文献类型：
--
作者：
Edebali, Serpil;Pehlivan, Erol
用两种不同的螯合树脂(双甲基甲胺、亚氨基二乙酸酯)对水溶液中的Cu2+进行了去除实验。为了比较用强酸性阳离子交换剂和磺酸功能化处理的结果，对两种螯合树脂进行了比较。考察了树脂用量、时间、pH值、浓度等参数对离子交换的影响。采用Langmuir、Freundlich、D-R和Scatchard等温线模型对数据进行评价。Langmuir等温线模型为最佳模型。保留了部分官能团的螯合树脂对水溶液中的Cu2+具有良好的去除性能。随着水介质中Cu2+浓度的增加，树脂对Cu2+的吸附容量增大。FT-IR分析结果表明，离子交换和络合是Cu2+从水相中吸附的主要机理。(C)2016爱思唯尔B.V.保留所有权利。
Copper ion (Cu2+) removal from aqueous solutions was performed with two different chelating resins (bis-picolylamine, iminodiacetate). In order to compare the results obtained from the chelating resins, strong acid cation exchangers were used with sulfonic acid functionally. The effects of the following parameters such as the amount of resin, the duration, pH levels and concentration were noted for the ion-exchange. The Langmuir, Freundlich, D-R and Scatchard isotherm models were used to evaluate the data. The Langmuir isotherm model was found to be the best model. The chelating resins which retained some of their functional groups showed good properties for the removal of Cu2+ from aqueous solutions. The sorption capacity of the resins increased with the rising Cu2+ concentration in the aqueous medium. FT-IR analysis results show clearly that the ion-exchange and chelating took place as mechanisms which rule during the sorption of Cu2+ from aqueous phase. (C) 2016 Elsevier B.V. All rights reserved.