Jayanudin, Indar Kustiningsih

ABSTRACT

Fe catalyst immobilization for Fenton process can use natural zeolite by impregnation method. Natural zeolite used comes from Bayah-Indonesia. The purpose of this research was the characterization of natural zeolite as a catalyst support Fe for degradation of phenol using the process of photo Fenton. Preparation of Fe-natural zeolite (Fe-NZ) catalyst has been made by activating natural zeolite using a solution of 5M NaOH at 70 °C for 60 minutes, after that washed with aquadest until neutral and dried at 100 °C for 1 hour. Natural zeolite has been activated and then analyzed using Brauner Emment Teller (BET) to determine the size of the pores.Catalyst of Fe-NZ made from 5 g of the activated natural zeolite impregnated in 30 mL of 0.075M Fe(NO3)3.9H2O and stirred using a magnetic stirrer for 180 minutes, then filtered and calcinated at a temperature of 500oC for 4 hours. Characterization of Fe-NZ catalyst was performed using scanning electron microscope (SEM) and X-ray fluorescence (XRF).The effectiveness of Fe-NZ catalyst for the process of photo Fenton can be done to degrade phenol.Fe-NZ of 5 g, 10 g and 15 gwas included in the reactor which was equipped with a UV lamp, the reactor containing H2O2and 50 ppm phenol with a ratio of 4: 1, 5:1 and 6:1 pH in the reactor was 5 by adding HCl or NaOH. Phenol degradation process carried out for 120 minutes with samples for analysis every 30 minute using UV-vis spectrophotometer with a wavelength of 300 nm.The results obtained characteristics of the largest surface area is 23.46 m2/g and pore size 9Å. The amount of Fe as the greatest impregnation is 7.73%. Based on the result of SEM obtained that morphology of zeolite after activation more neatly than before activation. Increase the amount of Fe-NZ catalyst and the ratio of H2O2 to phenol can increase the degradation of phenol. Keywords: Impregnation, natural zeolite, photo Fenton, phenol