PENGARUH SILIKA SEKAM PADI PADA SINTESIS KOMPOSIT Fe3O4/KITOSAN/SiO2 DAN UJI ADSORPSI LOGAM Cu(II)

Abstract

Synthesis of Fe₃O₄/chitosan/SiO₂ composites has been carried out. This study observed the effect of rice husk silica on the synthesis of Fe₃O₄/Chitosan/SiO₂ composites and the Cu (II) Metal Adsorption Test. The synthesis was carried out by synthesizing Fe₃O₄, preparing chitosan from rajungan shells, extracting silica from rice husks and synthesizing Fe₃O₄/chitosan/SiO₂ Composite composites. Rice husk silica which was varied with a mass of 0.5; 0.75; and 1 gram. The results of XRD analysis showed the presence of Fe₃O₄ phase and SiO₂ phase and crystalline structure. Composite adsorption test on Cu (II) metal showed the greatest adsorption efficiency with the addition of 1 gram of SiO₂, which was 77.60 %.