离子交换树脂对水中高氯酸根的吸附及其机理研究

曲宏斌; 万东锦; 肖书虎; 章丽萍; 刘瑞霞

doi:10.3969/j.issn.1674-991X.2016.04.051

离子交换树脂对水中高氯酸根的吸附及其机理研究

doi: 10.3969/j.issn.1674-991X.2016.04.051

1.
中国矿业大学(北京)化学与环境工程学院
2.
中国环境科学研究院城市水环境科技创新基地
3.
河南工业大学化学化工学院

详细信息

通讯作者:
肖书虎 E-mail: xiaoshuhu@126.com

中图分类号: X703
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出版历程
- 收稿日期: 2016-01-11
- 修回日期: 2016-03-27
- 刊出日期: 2016-07-20

Study on Adsorption of Perchlorate by Anion Exchange Resins and Its Mechanisms

1.
School of Chemical and Environmental Engineering, China University of Mining and Technology
2.
Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences
3.
School of Chemistry and Chemical Engineering, Henan University of Technology

More Information

Corresponding author: XIAO Shuhu E-mail: xiaoshuhu@126.com

摘要

摘要: 通过对比几种常用的离子交换树脂，筛选出处理ClO₄^-的最佳树脂。研究表明：氯型717阴离子交换树脂(Cl717)表现出较好的吸附效果，其吸附动力学符合伪二级动力学模型，吸附等温线符合Langmuir吸附等温式，属于单层吸附；升高温度和增加投加量有利于Cl717对ClO₄^-的吸附；共存阴离子对Cl717吸附ClO₄^-产生抑制作用，干扰能力依次为Cl^-3^-4^2-4^3-。对树脂进行了再生，再生液浓度为2.16 mol/L，当用量为树脂体积5倍时可获得较好的再生效果。红外光谱分析结果表明：Cl717吸附ClO₄^-的主要机理可能是树脂骨架对ClO₄^-的静电引力作用以及ClO₄^-与树脂的季胺基团形成了氢键。
- 离子交换树脂 /
- ClO₄⁻ /
- 水处理 /
- 吸附动力学 /
- 吸附机理
Abstract: Several commonly used ion exchange resins were compared and the optimal resins to absorb perchlorate were screened out. It showed that Cl717 anion exchange resin acquired the best adsorption efficiency. The adsorption process attributed to the pseudo second order kinetics model, and the equilibrium isotherm for perchlorate uptake corresponded closely to the Langmuir model, belonging to the adsorption type of single layer. The increase of temperature and dosage was beneficial to the adsorption. Co-existed anions could affect the adsorption process with the interference order of Cl^-3^-4^2-4^3-. The best regeneration efficiency was obtained when the concentration of regenerated solution was 2.16 mol/L and the amount of regenerated solution was 5 times of the resin volume. The FTIR analysis revealed that the mechanism of resin absorbing perchlorate was probably the attraction of resin skeleton electrostatic and the formation of hydrogen bond between perchlorate and resin quaternary amine groups.
- exchange resin /
- perchlorate /
- water treatment /
- adsorption kinetics /
- adsorption mechanism