USE OF CLAYSTONE, ZEOLITE, AND ACTIVATED CARBON AS A COMPOSITE TO REMOVE HEAVY METALS FROM ACID MINE DRAINAGE IN COAL MINING

Acid mine drainage is an environmental issue impairing water sources globally. Efficient and continuous treatment in mining regions urgently required. Therefore, this research aimed to evaluate the use of claystone from coal overburden, zeolite, activated carbon coconut shell as a composite remove Fe Mn acid drainage. XRD, BET, SEM characterized adsorbent. The X-Ray Diffraction analysis showed types mineral were kaolinite, zeolite: mordenite, carbon: cristobalite. Composite made with three ratios (Claystone:Zeolite:Activated carbon) = 50:25:25; 25:25:50; 25:50:25. According surface area analyzer, 25:25:50 ratio had largest (62,44 m2/g). SEM-EDX that porous morphology active sites such Al Si. Adsorption was carried out using hot plate stirrer various contact time: 30,60,90,120 150 minutes. results succeeded increasing pH 2.6 7.0 reducing concentration 13.006 0.1484 ppm (98,86%) 30.59 20.283 (33,69%). adsorption capacities 1,286 mg/g for 1,031 Mn. It can be concluded good adsorbent removing iron