Chromium (VI) removal from effluents using zeolite

被引：0
|
作者：
Govender-Ragubeer, Yageshni [1 ]
Gericke, Mariekie [1 ]
机构：
[1] MINTEK, Div Biotechnol, Private Bag X3015, Randburg, South Africa
来源：
RELIABLE MINE WATER TECHNOLOGY: PROCEEDINGS OF THE INTERNATIONAL MINE WATER ASSOCIATION ANNUAL CONFERENCE 2013, VOLS I & II | 2013年
关键词：
zeolite; adsorption; Cr(VI);
D O I：
暂无
中图分类号：
TD [矿业工程];
学科分类号：
0819 ;
摘要：
This study focused on evaluating the removal of Cr (VI) from effluents using natural zeolite. The results indicated that zeolite can adsorb Cr (III) cations, but not Cr (VI) anions (HCrO4-, CrO42- and Cr2O72-). To increase the adsorption of Cr (VI), different surface modification methods were evaluated. The best results were obtained using zeolite modified with 100 mmol Fe (III) for 24 hours. Treatment of solutions containing 20 mg/L Cr (VI) in columns packed with modified zeolite resulted in solutions containing <0.02 mg/L Cr (VI), which meets the WHO and South African effluent discharge limits of 0.05ppm.
引用
收藏
页码：569 / 574
页数：6
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