Abstract
Abstract The separation of palladium (Pd (II)) from wastewater containing copper (Cu (II)) and nickel (Ni (II)) is investigated via hollow fiber supported liquid membrane (HFSLM). The viability to separate Pd (II) is established by controlling the influence of operating conditions. Under optimized conditions viz. 6%(v/v) of Aliquat 336, pH 2 of feed solution, 0.5 M of thiourea mixed with 0.1 M HCl as a strippant and 100 mL/min of flow rate for both aqueous solutions, extraction and stripping of Pd (II) reach >99 % and 87.09 %, respectively. In order to determine stoichiometric coefficients, slope analysis is employed. To study the transport phenomena of Pd (II) across HFSLM, an analysis of mass is presented. Axial convection, axial diffusion, radial diffusion and chemical reactions are investigated via mathematical modeling. Results indicate that the model proves to be an effective approach for predicting the transportation of Pd (II) across the system.
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