Integrated acid mine drainage treatment using Mg(OH)2 or Mg(HCO3)2 and Ca(OH)2: Implications for separate removal of metals and sulphate

• Published in: International journal of mineral processing Vol. 155; pp. 83 - 90
• Main Authors: Akinwekomi, Vhahangwele, Kefeni, Kebede K., Maree, Jannie P., Msagati, Titus A.M.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 10.10.2016
• Subjects: Acid mine drainage; Calcium hydroxide; Carbon dioxide; Gypsum; Iron (II); Magnesium hydroxide; Metal hydroxides; Moles; Precipitates; Reuse; Sludge; Sulfates; Sulphate; Iron (II); Sulphate; Magnesium hydroxide; Acid mine drainage; Calcium hydroxide; Carbon dioxide

In this study, the influence of mole ratio dosage of Mg(OH)2 and Mg(HCO3)2 to that of Fe2+ and factors influencing the rate of Fe2+ oxidation were studied using simulated AMD. In addition, the consequence of AMD treatment first with Mg(OH)2/Mg(HCO3)2 and then Ca(OH)2 were evaluated. The optimised me...