The mechanism of ion exchange and adsorption coexist on medium-low concentration ammonium-nitrogen removal by ion-exchange resin

被引：16

作者：

Yunnen, Chen ^{[1
]}

Xiaoyan, Luo ^{[1
]}

Changshi, Xiong ^{[1
]}

Liming, Liang ^{[1
]}

机构：

[1] School of Resource and Environmental Engineering, Jiangxi University of Science and Technology, 156 Kejia Ave., Ganzhou Jiangxi

来源：

Environmental Technology (United Kingdom) | 2015年 / 36卷 / 18期

关键词：

adsorption; ammonium-nitrogen (NH[!sup]+[!/sup][!sub]4[!/sub]-N); D113; resin; ion exchange; mechanism;

D O I：

10.1080/21622515.2015.1027285

中图分类号：

学科分类号：

摘要：

In this study, the removal of medium-low concentration ammonium-nitrogen () from waters and wastewaters on D113 resin was investigated with respect to pH, initial concentration, temperature and contact time. The equilibrium of on D113 resin reached in 20-30min. The process of removal by D113 resin fitted Langmuir isotherm well. The pseudo second-order kinetic and intra-particle diffusion models were used to investigate the kinetic data of on D113 resin. The desorption solution can be returned to production after pretreatment. The mechanism of removal of by D113 resin was coexistence of adsorption and cation exchange. When the dosage of D113 resin was 5gL-1, pH 6, contact 30min at room temperature, initial concentration being 116mgL-1 in rare earth metallurgical wastewater was reduced to 13mgL-1 after adsorption treatment. © 2015 Taylor and Francis.

引用

页码：2349 / 2356

页数：7

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