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Studies on the Adsorption Behavior of Erbium(III) by D155 Resin

Huijun Wang

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Abstract

This article focuses on the research of the effect of resin adsorption,through the factors such as pH of medium,temperature,adsorption time and resin concentration etc.Experimental results show that the best medium pH of sorption of Er3+ by D155 resin is 5.7 in the HAc-NaAc medium.The static adsorption capacity of Er3+ by D155 resin is 280mg·g-1.The adsorption rate constant is 2.58×10-5s-1.The adsorption thermodynamic parameters are ΔH=13.05kJ·mol-1,ΔS=50.52J·mol-1·K-1,ΔG=-2.0kJ·mol1.And the apparent activity energy is 10.42kJ·mol-1.The adsorption behavior of Er3+ by D155 resin obeys the Freundlich isotherm.The desorption process of Er3+ form the pregnant resin is also researched.

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What this paper is about

This article focuses on the research of the effect of resin adsorption,through the factors such as pH of medium,temperature,adsorption time and resin concentration etc.Experimental results show that the best medium pH of sorption of Er3+ by D155 resin is 5.7 in the HAc-NaAc medium.The static adsorption capacity of Er3+ by D155 resin is 280mg·g-1.The adsorption rate constant is 2.58×10-5s-1.The adsorption thermodynamic parameters are ΔH=13.05kJ·mol-1,ΔS=50.52J·mol-1·K-1,ΔG=-2.0kJ·mol1.And the apparent activity energy is 10.42kJ·mol-1.The adsorption behavior of Er3+ by D155 resin obeys the Freundlich isotherm.The desorption process of Er3+ form the pregnant resin is also researched.

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Available abstract

This article focuses on the research of the effect of resin adsorption,through the factors such as pH of medium,temperature,adsorption time and resin concentration etc.Experimental results show that the best medium pH of sorption of Er3+ by D155 resin is 5.7 in the HAc-NaAc medium.The static adsorption capacity of Er3+ by D155 resin is 280mg·g-1.The adsorption rate constant is 2.58×10-5s-1.The adsorption thermodynamic parameters are ΔH=13.05kJ·mol-1,ΔS=50.52J·mol-1·K-1,ΔG=-2.0kJ·mol1.And the apparent activity energy is 10.42kJ·mol-1.The adsorption behavior of Er3+ by D155 resin obeys the Freundlich isotherm.The desorption process of Er3+ form the pregnant resin is also researched.

Key concepts: Adsorption, Desorption, Sorption, Freundlich equation, Chemistry, Nuclear chemistry, Chemical engineering, Chromatography

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