COAL MINING WASTE AS ADSORBENT FOR REMOVAL OF ACIDITY, Fe (III), Al (III) and Mn (II) IN ACID DRAINAGE

摘要

COAL MINING WASTE AS ADSORBENT FOR REMOVAL OF ACIDITY, Fe (III), Al (III) and Mn (II) IN ACID DRAINAGE. This study aimed the use of coal mining waste as a new adsorbent for H3O+ and removal of Al (III), Fe (III) and Mn (II) from acid mine drainage. Data from kinetic and equilibrium of the adsorption of H3O+ followed the pseudo second-order and Langmuir isotherm models. The maximum adsorption capacity of H3O+ was 316 mmol kg(-1). The adsorbent removed 100% of Al (III), 100% of Fe (III) and 89% of Mn (II), suggesting its use as an alternative for the treatment of acid mine drainage.