Abstract:

The amidoxime-Fe (III) adsorption fiber was made from PAN fiber containing amidoxime groups reaction with Fe3+. The adsorption of brown dye in the aqueous solution on the amidoxime-Fe (III) adsorption fiber is studied. The law of adsorption and adsorption kinetics has been studied. The results showed: pH = 11.5-12.5, the temperature (T) = 600C and adsorption time(t)=60min. The absorption was accorded with the Langmiure equation and the Freundlich isotherm. The reaction order was determined by infinitesimal calculus,based on the relationship between the adsorption time and the concentration of brown dye. The activation energy was obtained by the rate constant of different temperature and the Arrhenius equation, the absorption kinetics accorded with the character of the first-order reaction; with the reaction rate equation being ,the equation of reaction rate constant and the activation energy Ea=11.55kJ/mol.

Key words: ａｍｉｄｏｘｉｍｅｃｈｅｌａｔｉｎｇｆｉｂｅｒｃｏｎｔａｉｎｉｎｇＦｅ（Ⅲ），ｖａｔｂｒｏｗｎｄｙｅ，ａｄｓｏｒｐｔｉｏｎ，ｋｉｎｅｔｉｃ