Abstract
A new acetyl-meglumine resin which contains α-acetyl-amine and orth-dihydroxy was directly synthesized by the reaction of chloroacetylated polystyrene resin(PS-Acyl-Cl) with meglumine.The boron adsorption behavior of the acetyl-meglumine resin was studied by varying different parameters,such as the pH value,temperature,the initial concentration of boron and the adsorption time.The experimental results showed that the adsorption behavior of the resin obeyed the Langmuir model equation within the range of experimental condition.And the maximum adsorption capacity could be up to 28.1 mg/g.The adsorption capacity of the acetyl-meglumine resin for boron was superior to the Boron Specific Resin that was synthesized by chloromethyl polystyrene resin.The high adsorption capacity showed that α-acetyl-amine and orth-dihydroxy had synergic adsorption of boron.It was found that the resin maintained the high capacity at pH=6.0 and the effect of temperature on resin adsorption was little.The resin desorption rate was more than 96%.After repeating 5 times,adsorption capacity for boron basically unchanged.The kinetics studies show that the dominant procedure of the adsorption is liquid film diffusion-controlled mechanism.
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