Adsorption behavior and mechanism of D113 resin for lanthanum
来源期刊：Rare Metals2007年第6期
论文作者：SHU Zengnian), XIONG Chunhua), SHEN Qiuxian), YAO Caiping), and GU Zhenyu) ) Department of Chemistry, Lishui University, Lishui , China ) College of Food Science, Biotechnology and Environmental Engineering, Zhejiang Gongshang University, Hangzhou , China
文章页码：601 - 606
摘 要：The sorption properties of macroporous weak acid resin （D113） for La3+ ion were studied by chemical analysis and IR spectra. Experimental results indicate that the D113 resin has a good adsorption ability for La3+ at pH = 6.0 in the HAc-NaAc medium. The statically saturated adsorption capacity is 273.3 mg/g. Separation coefficients of βLa3+/ Ce3+, βLa3+/ Gd3+, βLa3+/ Er3+, and βLa3+/ Y3+ are 2.29, 3.64, 4.27, and 0.627, respectively. The apparent activation energy of adsorption, Ea is 18.4 kJ/mol, the thermodynamics parameters H, S, and G of sorption are 4.53 kJ/mol, 61.8 J/（molK）,-13.9 kJ/mol, respectively. The adsorption behavior of D113 for La3+ obeys the Freundlich isotherm. La3+adsorbed on resin can be eluted by 2.0 mol/L HCl quantitatively.
SHU Zengnian1), XIONG Chunhua2), SHEN Qiuxian1), YAO Caiping2), and GU Zhenyu2) 1) Department of Chemistry, Lishui University, Lishui 323000, China 2) College of Food Science, Biotechnology and Environmental Engineering, Zhejiang Gongshang University, Hangzhou 310035, China
摘 要：The sorption properties of macroporous weak acid resin （D113） for La3+ ion were studied by chemical analysis and IR spectra. Experimental results indicate that the D113 resin has a good adsorption ability for La3+ at pH = 6.0 in the HAc-NaAc medium. The statically saturated adsorption capacity is 273.3 mg/g. Separation coefficients of βLa3+/ Ce3+, βLa3+/ Gd3+, βLa3+/ Er3+, and βLa3+/ Y3+ are 2.29, 3.64, 4.27, and 0.627, respectively. The apparent activation energy of adsorption, Ea is 18.4 kJ/mol, the thermodynamics parameters H, S, and G of sorption are 4.53 kJ/mol, 61.8 J/（molK）,-13.9 kJ/mol, respectively. The adsorption behavior of D113 for La3+ obeys the Freundlich isotherm. La3+adsorbed on resin can be eluted by 2.0 mol/L HCl quantitatively.
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