Adsorption of D113 resin for dysprosium(III) |
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Authors: | Wang Huijun and Gao Peng |
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Affiliation: | (1) College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan, 316004, China |
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Abstract: | The adsorption behavior and mechanism of D113 resin for Dy(III) was investigated by using the method of resin adsorption.
Experimental results show that the optimum medium pH of adsorption of D113 resin for Dy3+ is pH=6.00 in the HAc-NaAc medium. The static adsorption capacity of D113 resin for Dy3+ is 292.7 mg·g−1. The optimum eluant is 0.5 mol·L−1 HCl. The adsorption rate constant is k
298=6.8×10−6s−1. The apparent activation energy of D113 resin for Dy(III) is 14.79 kJ·mol−1. The adsorption behavior of D113 resin for Dy(III) obeys the Freundlich isotherm. The adsorption parameters of thermodynamic
are ΔH=14.48 kJ·mol−1, ΔS=54.69 J·mol−1·K−1, ΔG=−1.82 kJ·mol−1.The adsorption mechanism of D113 resin for Dy3+ was confirmed by chemical analysis and IR spectra.
Funded by the Natural Science Foundation of Zhejiang Province (No.201027), Foundation of Zhejiang Provincial Education Bureau
(No.20040551) and Zhoushan Science Technology Bureau (No.04114) |
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Keywords: | D113 resin adsorption behavior adsorption mechanism dysprosium(III) rare-earths |
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