黄原胶-丙烯酰胺接枝共聚物对Cr3+的吸附性能研究

he graft copolymers of Xanthan Gum and Acrylamide (XG-g-AM) were synthesized from Xanthan Gum by microwave irradiation with acrylamide as grafted monomer. XG-g-AM were characterized by Fourier t0ransform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). Adsorption behavior of XG-g-AM for Cr3+ was investigated, moreover, thermodynamics property was studied according to adsorption isotherm. The results show that the adsorption behavior of XG-g-AM for Cr3+ is adapted to Freundlich adsorption isotherm equation when temperature were in the range of 298 to 318K. The adsorption is a spontaneous and endothermic process of increased entropy, and the increase of temperature would benefit the adsorption.