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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 Dy~(3+) is pH=6.00 in the HAc-NaAc medium.The static adsorption capacity of D113 resin for Dy~(?) 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~(-6)s~(-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 areΔH=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 Dy~(3+) was confirmed by chemical analysis and IR spectra.
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 Dy ~ (3+) is pH = 6.00 in the HAc -NaAc medium.The static adsorption capacity of D113 resin for Dy ~ (?) 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 ~ (-6) s ~ (-1) .The adsorption activity of D113 resin for Dy (Ⅲ) 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 ~ (-1). The adsorption mechanism of D113 resin for Dy ~ (3+) was confirmed by chemical analysis and IR spectra.