STUDI PERBANDINGAN ADSORPSI ION LOGAM Cd2+ PADA AF, Fe3O4 DAN Fe3O4-AF

Abstract

Research on comparative study of  metal ion adsorption on AF,  and -AF has been carried out. The initial stage is the extraction of AF from the peat soil of the Samboja area of ​​East Kalimantan. Extraction was carried out with 1 M NaOH and 12 M HCl solution. The second stage was the preparation of  dan -AF by coprecipitation method. The next step is the comparison test of AF adsorption,  and -AF against  metal ions. The results showed that -AF had 4 times greater adsorption ability than  and AF in adsorption of  metal ions that is equal to 8.4563 mg/g. This is because AF has a high affinity for  particles and is able to increase the stability of Nano dispersion of  by preventing their aggregation so that -AF is more dispersed and more stable. -AF also has a smaller size compared to AF and Fe₃O₄.

Keywords: Adsorption, AF, Fe₃O₄, Fe₃O₄-AF, Cd²⁺