Pengaruh perlakuan kimia terhadap karakteristik zeolit alam aktif

Abstract

Natural zeolite is an inorganic mineral which is abundant in Indonesia. Its use is quite broad as an ion exchanger, adsorbent, dryer, air softener, filtering, catalyst and catalyst developer in the reaction. The zeolite process by removing air and impurity oxides that cover the surface of the zeolite. This study aims to re-study the activation and concentration of acid to the nature of active zeolites. HCl concentrations were 2, 4 and 6 N, while activation time was 4, 6 and 8 hours. Characteristics of active zeolites studied include pH, ash content, air content, ability to adsorb methyle blue and FT-IR. After the process of soaking natural zeolites with each combination of concentration and activation time, it was found that the pH value was between 4 - 6, ash content between 10% - 30%, air content between 12.5% - 25%, and the concentration of blue methyle adsorbed between 219.83 mg / gr - 249.59 mg / gr. From the results it appears that the active natural zeolite is obtained from 6 N HCl concentration and 6 hours activation time has the performance according to the adsorbent requirements, where the ash content value is 10%, 12.5% moisture content, adsorbed blue metallic 249.59 mg / gr. Cluster functions that can be analyzed in FT-IR are O-H (Carboxylic Acid Monomer), C = C (Alkene), C-O (Carboxylic Acid) and C-H (Aromatic Ring).