ABSTRACT
Objective To find new methods to control the pollution of dye,the law of adsorption and adsorption kinetics of vat blue RSN by amidoxime fiber were studied. Methods The amidoxime-Fe(Ⅲ) adsorption fiber was made from PAN fiber containing amidoxime groups reaction with Fe3+. The adsorption of vat blue in the aqueous solution on the amidoxime-Fe(Ⅲ) adsorption fiber was studied. The reaction order was determined by infinitesimal calculus,based on the relationship between the adsorption time and the concentration of vat blue. The activation energy was obtained by the rate constant of different temperature and the Arrhenius equation. Results The results of adsorption showed the optimal condition:pH was 10.5,the temperature was 45 ℃ and adsorption time was 80 min. The absorption was accorded with the Freundlich isotherm and the character of the first-order reaction. Conclusion The process of vat blue RSN adsorption by amidoxime fiber is simple and the raw materials of amidoxime fiber is very cheap,so it may be expected to apply to the industrial wastewater treatment