Magnetic fixed-bed column for Cr(VI) removal from aqueous solution using schwertmannite

被引：14
|
作者：
Eskandarpour, Akbar [1 ]
Onyang, Maurice S. [2 ]
Tanahashi, Mitsuru [1 ]
Ochieng, Aoyi [3 ]
Bando, Yoshiyuki [1 ]
Iwai, Kazuhiko [1 ]
Okido, Masazumi [1 ]
Asai, Shigeo [1 ]
机构：
[1] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi 4648603, Japan
[2] Tshwane Univ Technol, Dept Chem & Met Engn, ZA-0001 Pretoria, South Africa
[3] Univ Witwatersrand, ZA-2050 Johannesburg, South Africa
来源：
ISIJ INTERNATIONAL | 2008年 / 48卷 / 02期
关键词：
magnetic fixed bed column; Cr removal; high magnetic field; schwertmannite; wastewater treatment; electromagnetic processing of materials;
D O I：
10.2355/isijinternational.48.240
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The fine particles of schwertmannite as an iron oxyhydroxide adsorbent has been suggested as a novel and strong Cr(VI) sorbent for treatment of Cr-contaminated industrial wastewater. The removal process was conducted in both batch and continuous trials. As a result of the batch experiments, the maximal adsorption capacity of the schwertmannite was obtained as 178 mg/g which was quite high amount in comparison with the usual applied Cr(VI) sorbents in the literatures. The continuous removal process involved a combination of a fixed bed column with a high gradient magnetic field which was firstly introduced as a novel designation of a fixed bed column to overcome the difficulties accompanied with the application of some especial fine particle adsorbents through the fixed-beds. The experimental results revealed that the magnetization force had a great function in this process to control the shape and the fitness of the bed during the sorption test as well as to simplify the experimental set-up.
引用
收藏
页码：240 / 244
页数：5
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