电容去离子化去除地下水中镉的影响因素

doi:10.13278/j.cnki.jjuese.20170334

吉林大学学报(地球科学版) ›› 2019, Vol. 49 ›› Issue (4): 1129-1136.doi: 10.13278/j.cnki.jjuese.20170334

电容去离子化去除地下水中镉的影响因素

董军^1,2, 李文德^1,2, 陈建隆³, 吴玥^1,2, 鹿豪杰^1,2

1. 吉林大学新能源与环境学院, 长春 130021;
2. 地下水资源与环境教育部重点实验室(吉林大学), 长春 130021;
3. 逢甲大学理学院环境工程与环境科学学系, 台湾台中 407

收稿日期:2017-12-27 出版日期:2019-07-26 发布日期:2019-07-26
作者简介:董军(1976-),男,教授,博士生导师,主要从事污染场地的模拟、控制与修复等方面的研究,E-mail:dongjun@jlu.edu.cn
基金资助:
国家自然科学基金项目（41272253）；吉林大学研究生创新基金资助项目（2017074）

Influencing Factors of Cadmium Removal from Groundwater by Capacitive Deionization

Dong Jun^1,2, Li Wende^1,2, Chen Jianlong³, Wu Yue^1,2, Lu Haojie^1,2

1. College of New Energy and Environment, Jilin University, Changchun 130021, China;
2. Key Laboratory of Groundwater Resources and Environment(Jilin University), Ministry of Education, Changchun 130021, China;
3. Department of Environment Engineering and Science, Feng Chia University, Taizhong 407, Taiwan, China

Received:2017-12-27 Online:2019-07-26 Published:2019-07-26
Supported by:
Supported by National Natural Science Foundation of China (41272253) and Graduate Innovation Fund of Jilin University(2017074)

摘要/Abstract

摘要： 以高比表面积活性炭作为吸附剂制备电容电极，研究电容去离子化（CDI）对地下水中镉的吸附性能。分别探讨了镉初始质量浓度、体系供电电压、地下水中常见阳离子种类对CDI去除镉的影响。结果表明，CDI吸附镉符合准二级吸附动力学、满足Langmuir等温吸附方程，CDI对镉的吸附为单分子层吸附。吸附量随镉初始质量浓度的升高而增加；在低质量浓度时，较高的供电电压会提高初始阶段的吸附速率，但对电极的最终吸附量无显著影响；地下水中主要阳离子的存在增加了体系的电导率，从而促进了CDI对镉的吸附，提高了镉的吸附速率和去除率。

关键词: 活性炭, 电容去离子化, 吸附, 镉

Abstract: By using high-surface-area activated carbon as adsorbent manufacturing electrode, the authors studied the effects of capacitive deionization for cadmium removal from groundwater, and discussed the influences of initial concentration, supply voltage and common cation in groundwater on capacitive deionization for cadmium removal. The results show that the adsorption of cadmium by CDI is monolayer adsorption,which conforms to quasi-second order adsorption kinetics, and satisfies Langmuir isothermal adsorption equation. The adsorption capacity increases with the increase of the initial concentration; at lower concentration, higher voltage increases the adsorption rate at initial stage, but has no significant effect on the final adsorption capacity of the electrode; the main cations in underground water increase conductivity of solution and improve cadmium adsorption rate and removal rate.

Key words: activated carbon, capacitive deionization, adsorb, cadmium

中图分类号:

X523

董军, 李文德, 陈建隆, 吴玥, 鹿豪杰. 电容去离子化去除地下水中镉的影响因素[J]. 吉林大学学报(地球科学版), 2019, 49(4): 1129-1136.

Dong Jun, Li Wende, Chen Jianlong, Wu Yue, Lu Haojie. Influencing Factors of Cadmium Removal from Groundwater by Capacitive Deionization[J]. Journal of Jilin University(Earth Science Edition), 2019, 49(4): 1129-1136.

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电容去离子化去除地下水中镉的影响因素

Influencing Factors of Cadmium Removal from Groundwater by Capacitive Deionization

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