Adsorption Isotherm of Phenol by Synthesis SUZ-4 Zeolite from Rice Husk Ash

Abstract

From the analysis of SUZ-4 zeolite, synthesized from the Rice Husk Ash (RHA) as raw material, it was found that the synthesized SUZ-4 contained 99.7 % SiO2 while having a micro-structure of needle-shaped crystals of approximately 0.2 m in diameter and 2.0 m in length. Specific surface area of this synthesized SUZ-4 was 247.4 m2/g. The adsorption of phenol onto this SUZ-4 zeolite was investigated in a batch adsorption system at 35 OC for the duration of 300 minutes where the initial concentration of phenol was 100 mg/L. Maximum phenol adsorption capacity of the synthesized SUZ-4 was found to be 90.75 mg/g. occurring at pH 4.0 with SUZ-4 zeolite of 0.05 g. The Langmuir and Freundlich adsorption models were applied to describe the isotherms where Langmuir isotherm was successfully used to predict the experimental results.