Chromium(VI) separation from tannery wastes utilizing hydrotalcites

被引：8
|
作者：
Martínez-Gallegos, S
Martínez, V
Bulbulian, S
机构：
[1] Inst Nacl Invest Nucl, Dept Quim, Mexico City 11801, DF, Mexico
[2] Univ Autonoma Estado Mexico, Fac Ingn, Ctr Interamer Recursos Agua, Toluca, Mexico
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2004年 / 39卷 / 03期
关键词：
hydrotalcites; thermal treatment; Cr(VI) sorption; tannery wastewater;
D O I：
10.1081/SS-120028000
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Laboratory scale tests were developed to study the high consumption of water in a tannery in Toluca City, Mexico, needed to decrease the biological oxygen demand (BOD) in the wastewater. Biological oxygen demand is generally reduced by reducing the organic material with sodium hypochlorite. However, Cr(VI) is formed in this last process. Hydrotalcite (HT) and its calcination product were applied to separate the Cr(VI) formed. The best material found was calcined hydrotalcite, which removed not only Cr(VI) from the wastewater but also other anions, such as Cl-, SO42-, and HCO3-.
引用
收藏
页码：667 / 681
页数：15
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