MATEC Web Conf.
Volume 101, 2017Sriwijaya International Conference on Engineering, Science and Technology (SICEST 2016)
|Number of page(s)||5|
|Section||Emerging Concepts in Chemical Process & Energy Engineering|
|Published online||09 March 2017|
Combination of CaCO3 and Ca(OH)2 as agents for treatment acid mine drainage
1 Department of Chemistry Faculty of Mathematics and Natural Sciences Sriwijaya University, 30139 Palembang, Indonesia
2 Department of Biology Faculty of Mathematics and Natural Sciences Sriwijaya University, 30139 Palembang, Indonesia
* Corresponding author: firstname.lastname@example.org
Acid mine drainage (AMD) has characteristic very low pH solution and containing metal ions in high concentration. This paper presents the use of CaCO3, Ca(OH)2 and the combination of both to increase the pH and decreased the concentration of Fe and Mn ions for acid mine drainage. The research variables are the effect of reactant dosage, contact time and temperature by batch studies. The AMD before treatment has pH solution of 3.38, Fe and Mn ions concentration of 44.6 and 7.19 mg/L, respectively. The dosage of CaCO3 to increased pH solution about 7.0 was found 2400 mg/L at contact time 60 minutes and temperature 40 °C. The amount of Ca(OH)2 for the neutralization of AMD solution smaller than CaCO3 is 210 mg/L at contact time 45 minutes and temperature 40 °C. The combination dosage of CaCO3 1000 mg/L and Ca(OH)2 90 mg/L can increased the pH of AMD solution to 7.10 and reduction concentration of Fe to 3.53 and Mn to 4.51 mg/L. Therefore, the integrated of CaCO3 and Ca(OH)2 has the potential to be applied to treatment acid mine drainage.
© The Authors, published by EDP Sciences, 2017
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