Adsorption of cadmium ions from simulated battery waste water by polyethylene polyamine modified activated carbon

被引：6
|
作者：
Wang, Baoying [1 ]
Lan, Jingming [1 ]
Pu, Junli [1 ]
Liu, Xiu [1 ]
Gong, Bonglin [1 ]
机构：
[1] North Minzu Univ, Sch Chem & Chem Engn, Key Lab Chem Engn & Technol, State Ethn Affairs Commiss, Yinchuan 750021, Ningxia, Peoples R China
来源：
WATER SCIENCE AND TECHNOLOGY | 2021年 / 84卷 / 12期
基金：
中国国家自然科学基金;
关键词：
activated carbon; adsorption; cadmium ion; heavy metal; modification; polyethylene polyamine; CAPACITY; REMOVAL;
D O I：
10.2166/wst.2021.488
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The objective of this work was to study the treatment of waste water containing cadmium ions (Cd2+). Activated carbon (AC) was modified with potassium hydroxide (KOH) and polyethylene polyamine (PEPA). The structure and morphology of the modified AC was characterized. The effect of pH on adsorption was investigated, and the binary competitive adsorption and the reusability of the modified AC were studied. Subsequently the modified AC was used as an adsorbent for the removal of Cd2+ from wastewater. The adsorption capacity of optimized modified AC was 9.7 times that of unmodified AC. Kinetic adsorption curves were in accordance with pseudo-second-order kinetics, and the isothermal curves were in accordance with the Langmuir equation. The results indicate that the AC has a potential in the treatment of the waste water containing Cd2+ discharged from chemical plants during battery manufacturing.
引用
收藏
页码：3916 / 3927
页数：12
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