CD Skripsi
Selektivitas Penjerapan Ion Logam Berat Kadmium(Ii) Dan Besi(Iii) Dalam Campuran Menggunakan Arang Aktif Tandan Kosong Kelapa Sawit (Elaeis Gueneensis Jacq.)
Oil palm empty fruit bunches (Elaeis guineensis Jacq.) are one of the oil palm wastes that can be used as activated carbon for heavy metal adsorption. The cellulose contained in oil palm empty fruit bunches plays an important role in carbon source the adsorption process of heavy metals. This research aims to determine the selectivity adsorption of Cadmium(II) and Iron(III) metals in mixed solution used oil palm empty fruit bunches as activated carbon. The method that used in this research was batch adsorption method with variation adsorbent doses (0.25 ; 0.5; 1.0; 1.5 and 2.0 g) and variation contact time (60, 90, 120 and 150 minutes). Activation on this research used a base activator, namely NaOH 0.1 M. The surface morphology of the oil palm empty fruit bunches before and after activation was analyzed used SEM, surface area was analyzed used BET and functional groups in the biosorbent were analyzed using an FTIR instrument. The characterization of SNI No. 06-3730-1995 carried out was the iodine adsorption capacity test and the Methylene Blue adsorption capacity test. The absorbance of Cadmium(II) and Iron(III) metals before and after adsorption was analyzed used an AAS instrument. The kinetic model is determined based on pseudo first-order and pseudo second-order kinetic models.The research results showed that the optimum adsorbent dose was 1.0 g and the optimum contact time was 120 minutes with adsorption efficiency and adsorption capacity on Cd2+ of 93.51% and 4.5651 mg/g, while on Fe3+ it was 95.38% and 4.6487 mg/g. The adsorption kinetic model follows pseudo second-order kinetics with a value of R2 = 0.9978 for cadmium metal with a reaction rate constant of 0.1556 g/mg min, while for iron metal the value of R2 = 0.9989 with a reaction rate constant of 0.3248 g/mg min. Based on the research, the concluded that oil palm empty fruit bunches activated charcoal has higher adsorption selectivity for Fe3+ metal ions than Cd2+.
Tidak tersedia versi lain