SINTESIS DAN KARAKTERISASI KOMPOSIT ZnO/KARBON AKTIF DARI LIMBAH KAYU MANIS SEBAGAI ADSORBEN LOGAM Pb2+

Abstract

Research on isothermal adsorption studies on the absorption of Pb2+ using ZnO/activated carbon from cinnamon waste has been carried out. The research was conducted on a laboratory scale. This study aims to synthesize activated carbon from cinnamon waste which is treated with ZnO and determine the maximum adsorption results of metal ion Pb2+. And it was characterized by using Fourier Transform Infrared (FTIR), Scanning Electron Microscopy-Energy Dispersive X Ray (SEM-EDX) and X-Ray Diffraction (XRD) and carried out determination of pH, carbon mass, contact time and optimum concentration.he results of FTIR characterization of ZnO/KA composite analysis are characterized by the presence of functional groups C = C, CO, OH, SEM EDX analysis produced plates and chunks and pore shapes with the amount of C elements amounting to 86.09% on activated carbon and 74.61% on composites, XRD analysis resulting diffraction angle 2θ between 2,960°; 2,863°; 2,815°; 2,736°; and 2,700° indicates the presence of ZnO compounds which give the dominant intensity at the diffraction angle of 2θ between 32.244°; 34.895o ; 36.72°; 57.021°; dan 63.272°. Maximum adsorption power of Pb2+ ions at pH 10, maximum concentration at 30 ppm, optimum weight of 1 gram and optimum contact time for 30 minutes. Adsorption kinetics from pseudo-second order with R2 of 0.9985.