Adsorption of ytterbium (III) from aqueous solution by SQD-85 resin

作者：Xiong Chun-hua^*; Wang Guo-tao; Yao Cai-ping

来源：Transactions of Nonferrous Metals Society of China, 2011, 21(12): 2764-2771.

DOI：10.1016/S1003-6326(11)61121-7

• SQD-85 resin
• adsorption
• Yb(III)
• kinetics
• thermodynamics
• mechanism

Adsorption and desorption behavior of Yb (III) by SQD-85 resin was investigated by various chemical methods and IR spectrometry. The adsorption capacity of SQD-85 resin for Yb (III) was studied as a function of solution pH, initial concentration of Yb(III), temperature and contact time. The optimal pH for the adsorption was 5.50 in the HAc-NaAc system, and the maximum adsorption capacity was estimated to be 347.6 mg/g at 308 K. The isotherms adsorption data fit well with Langmuir model. The adsorption kinetics data are in agreement with pseudo-second-order model. Thermodynamic parameters indicate that Yb (III) adsorption by SQD-85 resin is endothermic and spontaneous in nature. Thomas model is reasonably accurate in predicting experimental column results. The dynamic desorption rate of Yb(III) can increase to 97.3% when the elution agent is 1.0 mol/L HCl. These results suggest that Yb(III) in aqueous solution can be removed and recovered by SQD-85 resin efficiently.

• 出版日期2011-12
• 单位浙江工商大学