Sulfate removal by ettringite precipitation

被引：0
|
作者：
Pehlivanoglu, E [1 ]
Kabdasli, I [1 ]
Tünay, O [1 ]
机构：
[1] Istanbul Tech Univ, Dept Environm Engn, TR-80626 Istanbul, Turkey
来源：
FRESENIUS ENVIRONMENTAL BULLETIN | 1998年 / 7卷 / 12A期
关键词：
sulfate removal; chemical precipitation; ettringite;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this study, the principles of chemical precipitation of sulfate which is based on the formation of ettringite, a double salt with the formula Ca3Al2O6.3CaSO(4).32H(2)O are evaluated. The Al-2(SO4)(3)-Ca(OH)(2)-H2O system is chosen to study the equilibrium equations for ettringite precipitation. The residual sulfate concentrations are below 200 mg/l in pH values above 10,5 indicating that ettringite precipitation can be employed as an alternative treatment process for the removal of sulfate ions.
引用
收藏
页码：826 / 832
页数：7
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