Open AccessSTUDI DEGRADASI ZAT PEWARNA AZO, METIL ORANYE MENGGUNAKAN FERRAT (FeO42-)
Author(s) -
Dian Windy Dwiasi,
Mardiyah Kurniasih
Publication year - 2008
Publication title -
molekul
Language(s) - English
Resource type - Journals
eISSN - 2503-0310
pISSN - 1907-9761
DOI - 10.20884/1.jm.2008.3.1.42
Subject(s) - chemistry , absorbance , degradation (telecommunications) , oxidizing agent , kinetics , nuclear chemistry , molar ratio , benzene , inorganic chemistry , catalysis , organic chemistry , chromatography , telecommunications , physics , quantum mechanics , computer science
Synthesis of ferrate and its application to azo dyes degradation have been investigated. The synthesis was carried out by reacting Fe(NO3)3 solution with NaOCl in alkaline condition. Oxidation reaction of azo dyes was carried out by adjusting the molar ratio of ferrate to azo dyes. When ferrate reacted with azo dyes, its absorbance was monitored using UV-Vis spectrophotometer at pH condition that had been optimized. Kinetics study for azo dyes degradation was carried out at the absorbance maximum of azo dyes, as a function of time. Ferrate can oxidize azo dyes, methyl oranye effectively in optimum pH of 9.6. With the molar ratio of ferrate/azo dyes 5/1, it showed that the percentages of methyl oranye degradation reached 100%. The azo dyes degradation followed first order of kinetics. Analysis using UV-Vis spectrofotometry suggests that the products of azo dyes degradation are nitrate, ammonia, and benzene. This results showed that ferrate is an alternative and green oxidizing agent which can be used for azo dyes degradation.