MODIFIKASI LEMPUNG MAREDAN MENGGUNAKAN NANOPARTIKEL PERAK SEBAGAI ADSORBEN METHYLENE BLUE

Abstract

Clay is composed of (AlO4)5- octahedral and (SiO4)4- tetrahedral with water molecules moving freely in their cavities. Metal ions, usually alkaline earth metals (Na, K, Mg, Ca, and Fe) fill the cavity. Due to its chemical composition and structure, clay minerals have the potential to be used as ion exchangers, adsorbents, and molecular filters in wastewater treatment. This study aims to determine the adsorption capacity of silver nanoparticle modified clay in adsorbing methylene blue. In this study, the silver nanoparticle modified clay synthesis process was carried out using a two-step adsorption - reduction method. The value of the adsorption capacity of methylene blue by silver nanoparticle modified clay was 31.10 mg/g with an adsorbent dose of 80 mg, methylene blue concentration of 50 ppm, contact time 20 minutes, pH 11, and at 40℃. The adsorption mechanism that occurs involves electrostatic interactions between methylene blue dye cations and the negative charge (-OH) on the clay surface.