KARBON AKTIF DARI LIMBAH KULIT SALAK DIMODIFIKASI DENGAN KULIT JERUK SEBAGAI ADSORBEN

Abstract

This study aimed to synthesize activated carbon from salak peel waste modified with the addition of orange peel, with the primary objective of developing an effective activated carbon composite as an adsorbent for Methyl violet. The preparation of Salak/Orange Peel Activated Carbon (KAS/J) involved several stages, including carbonization, activation using a 20% KOH solution, and blending the activated carbon from salak peel with orange peel powder in 7:3 and 5:5 compositions. The adsorption mechanism is characterized by the attachment of molecules from a substance onto the surface of the adsorbent, often through weak interactions such as Van der Waals forces or hydrogen bonds. The results showed that the KAS/J composite with 7:3 and 5:5 ratios had optimal adsorption capacity at a mass of 0.03 g, with adsorption percentages of 81.60% and 68.9%, respectively. At a Methyl violet concentration of 150 ppm, the KAS/J composite with a 7:3 and 5:5 ratio achieved adsorption percentages of 90.8% and 89.9%, respectively. The KAS/J material demonstrated significant potential as an adsorbent material that can be applied in environmental waste treatment.