Modelling of mass transfer of Zn through supported liquid membranes (SLM)
نویسندگان
چکیده
Research on mass transfer in liquid membrane permeation has still left some challenging aspects to be solved. Although discussed very intensively the published models are rarely comparable and suffer from a lack of accuracy. The program was started with research on the widely investigated and very common test system Znaqu / Bis(2-ethylhexyl) phosphoric acid/ sulphuric acid. Based on the experimental investigation and the modelling of mass transfer in liquid/liquid extraction the target of this project has been detailed analysis of mass transfer through rigid membranes. Besides variation of the chemical potential the influence of the composition of the mobile solvent phase on mass transfer has been determined. Several transport properties such as composition dependence of the dynamic viscosity of the solvent phase have been recorded. For modelling of the experiments an analytical model with consideration of transport and thermodynamic properties has proven advantageous over several mass transfer models.
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