Removal of Hg(II) from aquatic environments using activated carbon impregnated with humic acid

被引：16

作者：

Jin, Gang ^{[1
]}

Eom, Yujin ^{[1
]}

Lee, Tai Gyu ^{[1
]}

机构：

[1] Yonsei Univ, Dept Chem & Biomol Engn, 50 Yonsei Ro, Seoul 03722, South Korea

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2016年 / 42卷

关键词：

Minamata; Mercury; Activated carbon; Impregnation; Humic acid; Isotherm; AQUEOUS-SOLUTIONS; MERCURY; ADSORPTION;

D O I：

10.1016/j.jiec.2016.07.029

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The removal of Hg from aquatic environments using activated carbon (AC) impregnated with humic acid was investigated. The Hg adsorption capacity of the AC was controlled by the specific surface area and by surface functional groups, and the Hg adsorption process was exothermic and more effective at low pH. The Hg adsorption process in this study corresponds to a Lagergren pseudo-2nd-order model, indicating that it is controlled by the chemical rather than the physical properties of the AC. In addition, the equilibrium isotherm data fit the Langmuir isotherm better than the Freundlich model, indicating that the AC surfaces were uniform and that a Hg adsorbate monolayer formed at equilibrium. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：46 / 52

页数：7

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