Zinc and nickel removal from aqueous solution by activated carbon in batch and permeable reactive barrier (PRB) systems

被引：3

作者：

Ebrahim, M. A. Ale ^{[1
]}

Ebadi, T. ^{[1
]}

机构：

[1] Amirkabir Univ, Civil Engn Dept, Tehran 158754413, Iran

来源：

DESALINATION AND WATER TREATMENT | 2018年 / 118卷

关键词：

Zinc removal; Activated carbon; Response surface methodology; Co-adsorption of Zn and Ni ions; Permeable reactive barrier; HEAVY-METAL IONS; NI(II) REMOVAL; MINE DRAINAGE; WALNUT SHELL; ADSORPTION; GROUNDWATER; WATER; SORPTION; SINGLE; WASTE;

D O I：

10.5004/dwt.2018.22393

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this work, factors that affect removal of zinc ion from aqueous solution by activated carbon were evaluated using the response surface methodology. The effects of concentration, pH, and activated carbon/solution ratio on removal efficiency were considered, and optimum conditions were determined. Then, the kinetics and equilibrium equations were expressed. Maximum removal efficiency for zinc in batch tests reached 96.7%. Moreover, co-adsorption of zinc and nickel ions was studied. Zn removal efficiency when Ni ions were present was enhanced surprisingly. Also, single Zn, as well as a system containing Zn and Ni ions, removal in a permeable reactive barrier was investigated. Single zinc breakthrough time reached 60 h, while similar breakthrough in a system containing Zn and Ni ions reached 65 h. Finally, various regeneration tests were conducted with over 90% desorption efficiency.

引用

页码：181 / 194

页数：14

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