Adsorption of XSD-296 resin for Cr(Ⅵ)
来源期刊：中国有色金属学报(英文版)2007年第4期
论文作者：舒增年 杜荣军 王旭 熊春华 李涛
文章页码：869 - 869
Key words：XSD-296 resin; chromium(Ⅵ); adsorption
Abstract: The adsorption properties of XSD-296 for Cr(Ⅵ) were studied by using chemical analysis and infrared spectrometry. Experimental results show that XSD-296 resin has a good adsorption ability for Cr(Ⅵ) at pH=2.6 in the HAc-NaAc medium. The statically saturated adsorption capacity is 235 mg/g resin. The apparent activation energy of adsorption reaction, Ea, is 16.73 kJ/mol, and the thermodynamic parameters are ？H=11.62 kJ/mol, ？G298 K=-4.13 kJ/mol. The adsorption behavior of resin for Cr(Ⅵ) is in accordance with Freundlich adsorption isotherm. Cr(Ⅵ) adsorbed on resin can be eluted by 5%NaCl-5%NaOH or 5%NH4Cl-5%NH3？H2O quantitatively. Infrared spectra and adsorption mechanism show that the functional group of resin coordinates with Cr(Ⅵ) to form co-ordination compound. The coordination molar ratio of the functional group of resin to Cr(Ⅵ) is 1:1.
基金信息：the Department of Education of Zhejiang Province, China
the Bureau of Science and Technology of Lishui City, China
