Abstract

Activated carbon from oil palm empty bunches (OPEB-AC) was modified by using paramagnetic Fe and Cu metals to produce magnetically activated oil palm empty fruit bunches (OPEB-MAC). The modified activated carbon was characterized by XRD, and magnetic peaks were appeared around 2 theta 30o to 40o which indicated of increasing the crystallinity properties of modified activated carbon. XRD result, then was analysed using EXPO 2014 software to observe the crystal parameters and showed different crystal orientations with the presence of Fe and Cu metals even though the crystal system formed was both triclinic. The adsorption Mn(II) increased by using OPEB-MAC by 0.63 mg/g, almost two times higher than that of Modified Activated Carbon (OPEB-AC) by 0.45 mg/g. The optimum condition for the absorption of OPEB-MAC occurs when the adsorbent is used 1g, with a concentration of Mn(II) of 15 ppm and a contact time of 60 minutes. While the OPEB-AC was optimum at the concentration of Mn(II) is 10 ppm for 45 minutes and 0.5 g of adsorbent. The magnetic properties of this activated carbon increase the active site of the activated carbon to enlarges the interaction of the activated carbon with Mn(II) metal which is also paramagnetic.

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