Hydrothermal Transformation of Natural Zeolite from Ende-NTT and Its Application as Adsorbent of Cationic Dye
ABSTRACT: A synthetic zeolite
was produced from natural zeolite from Ende-Nusa Tenggara Timur (NTT) by
hydrothermal method. This study aims to produce synthetic zeolite from Ende
natural zeolite to remove cation dye through the adsorption process.
Temperature of crystal formation (ageing) was performed at 60 °C for 6 h and
hydrothermal process was at 100 °C for 24 h. The natural zeolite produced
synthetic NaP1 and synthetic Faujasite. Based on the research results, the
synthesis of zeolite by the hydrothermal method can enhance the adsorption
capacity and Cation Exchange Capacity (CEC). The adsorption capacity in the
natural zeolites of type ZG, ZL and ZC before the hydrothermal process were
17.289, 17.276, and 16.483 mg/g, respectively, and after hydrothermal they increased
to 37.398, 37.369 and 37.362 mg/g, respectively. In addition, the CEC increased
from 84.154, 81.042, and 77.474 cmol/kg, respectively, to 244.063, 216.354, and
211.432 cmol/kg, respectively. The Langmuir model most closely matched the
isothermal adsorption equilibrium process.
Author: Yulius Dala Ngapa, Sri
Sugiarti, and Zaenal Abidin
Journal Code: jpkimiagg160084
