Kinetic Study of Erbium Ion Adsorption on Activated Charcoal from Aqueous Solutions |
| |
Authors: | Riaz Qadeer |
| |
Institution: | (1) Pakistan Atomic Energy Commission, P.O. Box 1611, Islamabad, Pakistan |
| |
Abstract: | The kinetics of the adsorption of erbium ions on activated charcoal from aqueous solutions has been studied in the temperature range of 10 to 40∘C. It was observed that the diffusion of erbium ions in to the pores of activated charcoal controls the kinetics of the adsorption process, and the values of intra-particle diffusion rate constant, kd (g/g ⋅ min1/2) were evaluated as 0.7 × 10−3 to 1.6 × 10−3 in the temperature range studied. Various thermodynamic parameters Δ H, Δ G and Δ S were also computed from values of the equilibrium constant KC. The results showed that the adsorption of erbium ions on activated charcoal is an endothermic process. |
| |
Keywords: | activated charcoal erbium ions adsorption kinetics aqueous solutions |
本文献已被 SpringerLink 等数据库收录! |
|