کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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643910 | 884396 | 2007 | 5 صفحه PDF | دانلود رایگان |
The adsorption of papain on the dye affinity membranes, the Cibacron Blue F3GA as a ligand, and the chitosan-coated nylon membrane as a base, under batch equilibrium experimental conditions at 277, 298, and 310 K was investigated. The experimental data were analyzed using two adsorption kinetic models: the pseudo-first-order and the pseudo-second-order. The pseudo-second-order kinetic model provided the better correlation to the experimental results. Studies showed that the adsorption of papain on dye affinity membranes could be described by the Freundlich isotherm. The thermodynamic constants of adsorption phenomena: ΔG°, ΔH°, and ΔS° were found as −12.58 kJ/mol (at 298 K), 17.81 kJ/mol, and 0.101 kJ/(mol K), respectively. The result shows that the adsorption of papain on the dye affinity membranes was endothermic and spontaneous.
Journal: Separation and Purification Technology - Volume 57, Issue 1, 1 October 2007, Pages 121–125