Using Calcium Carbonate/Hydroxide and Barium Carbonate to Remove Sulphate from Mine Water

被引：0
作者：
Akinwekomi, Vhahangwele [1 ]
Maree, Johannes P. [2 ]
Wolkersdorfer, Christian [1 ,3 ,4 ]
机构：
[1] Tshwane Univ Technol, Private Bag X680, ZA-0001 Pretoria, South Africa
[2] Phillert Trust, POB 70075, ZA-0041 Pretoria, South Africa
[3] Tshwane Univ Technol, SARChI Chair Acid Mine Drainage Treatment, Pretoria, South Africa
[4] Lappeenranta Univ Technol LUT, Lab Green Chem, Mine Water Management, Mikkeli 50130, Finland
来源：
MINE WATER AND THE ENVIRONMENT | 2017年 / 36卷 / 02期
基金：
新加坡国家研究基金会;
关键词：
Acid mine drainage; Sulphate removal; Water treatment; Solubility; Precipitation; NEUTRALIZATION; HYDROXIDE; RECOVERY;
D O I：
10.1007/s10230-017-0451-7
中图分类号：
TV21 [水资源调查与水利规划];
学科分类号：
081501 ;
摘要：
This study evaluated the effectiveness of using barium bicarbonate to remove sulphate from neutralized AMD. The Ba(HCO3)(2) was produced by dosing a BaCO3 solution with CO2 to form Ba(HCO3)(2). This greatly increased the barium ion concentration, which rapidly removed sulphate linked to either calcium or magnesium. Following sulphate removal, the Ca(HCO3)(2) or Mg(HCO3)(2) containing water can be stabilised by CO2 stripping with air, which results in CaCO3 precipitation. The MgCO3 remains in solution.
引用
收藏
页码：264 / 272
页数：9
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