Adsorption behavior of molybdenum onto D314 ion exchange resin
来源期刊：中南大学学报(英文版)2014年第12期
论文作者：WANG Ming-yu(王明玉) JIANG Chang-jun(蒋长俊) WANG Xue-wen(王学文)
文章页码：4445 - 4449
Key words：molybdenum; ion exchange; adsorption; thermodynamics; kinetics
Abstract: The adsorption behavior of molybdenum onto D314 was studied with the static adsorption method. The adsorption process was analyzed from thermodynamic and kinetic aspects. The experimental results show that the equilibrium adsorption data conform satisfactorily to the Langmuir equation. In the adsorption process of D314 for molybdenum, the enthalpy change ΔH is positive when temperature is in the range of 298-338 K, which indicates that the adsorption is an endothermic process, and the elevated temperature benefits to the adsorption. Kinetic analysis shows that the adsorption rate is controlled by intraparticle diffusion and chemical diffusion at the same time. The adsorption mechanism of molybdenum onto D314 was discussed based on IR spectra.
WANG Ming-yu(王明玉), JIANG Chang-jun(蒋长俊), WANG Xue-wen(王学文)
(School of Metallurgy and Environment, Central South University, Changsha 410083, China)
Abstract:The adsorption behavior of molybdenum onto D314 was studied with the static adsorption method. The adsorption process was analyzed from thermodynamic and kinetic aspects. The experimental results show that the equilibrium adsorption data conform satisfactorily to the Langmuir equation. In the adsorption process of D314 for molybdenum, the enthalpy change ΔH is positive when temperature is in the range of 298-338 K, which indicates that the adsorption is an endothermic process, and the elevated temperature benefits to the adsorption. Kinetic analysis shows that the adsorption rate is controlled by intraparticle diffusion and chemical diffusion at the same time. The adsorption mechanism of molybdenum onto D314 was discussed based on IR spectra.
Key words:molybdenum; ion exchange; adsorption; thermodynamics; kinetics
