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MG/AL LAYERED DOUBLE HYDROXIDE ANIONIC CLAY AS A POTENTIAL MATERIAL FOR THE REMEDIATION OF ACID MINE LEACHATE
Santosa, S.J, E.S. Kunarti, Karmanto, and N.A. Iksan.
Asian Journal of Environmental Technology 2(1):(2018)

Magnesium/aluminum hydrotalcite (Mg/Al HT) with interlayer anionic species of nitrate and carbonate has been synthesized and applied to neutralize acidity and remove sulfate, fulvic acid (FA) and humic acid (HA) commonly present in acid mine leachate. Sulfate and deprotonated FA and HA are removed by Mg/Al HT through anion exchange with interlayer nitrate and carbonate to decrease acidity. At optimum removal condition, the removal of sulfate, FA and HA followed the second order kinetic model and the maximum amount of those species removed by Mg/Al HT was 12.38, 7.83 and 1.18 x 10-4 mol/g or equivalent to 264, 183 and 70 mg/g, respectively. This article is Open Access at http://journal.bioremediation-forum.org/index.php/jeb/article/view/16/14.



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