Study on adsorption properties of crosslinked xanthated chitosan for Pb~(2+)

In this work,crosslinked xanthated chitosan was prepared from crosslinking and xanthate reaction using chitosan as materials and its structure were characterized by XRD,FT-IR.Its adsorption properties toward Pb2+were studied and various adsorption factors were further studied,including initial pH value,adsorption temperature and adsorption time.The results showed that the adsorption capability of chitosan and crosslinked xanthated chitosan to Pb2+ are 126.8mg/g,238.9mg/g respectively,when it was initiated at0.01M,pH 5 and kept at 25℃ for 2 h.The adsorption capability of crosslinked xanthated chitosan is 1.89 times of chitosan.