ADSORPTION STUDY OF Fe(III) IONS BY MASC-2-AMINO-4-NITROPHENOL

Adsorption of ferric(III) ions by a chelating synthetic sorbent based on the copolymer of styrene with maleic anhydride (MASC) and 2-amino-4-nitrophenolwas studied. Adsorption characteristics of the sorbent with respect to Fe(III) ions have been investigated. Various parameters influencing adsorption – optimal pH, the ionic strength, the time necessary for establishing complete sorption equilibrium, the initial concentration of metal ions were studied. It was shown that the maximum adsorption capacity of the sorbent with respect to ferric ions is 373.33 mg/g at pH=5. Several adsorption isotherm and kinetic models have been explored and the most relevant to our experimental data has been revealed