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The instability of supported liquid membranes (SLMs) for use in copper (II) ion extraction was investigated in this paper. The degradation behavior of these SLMs was monitored in situ by electrochemical impedance spectroscopy (EIS). The electrical properties of a SLM cell can be described by an equivalent circuit, R s (C m R m )Q. The model parameters, membrane resistance (R...
The adsorption equilibria of single-component and binary mixtures of levulinic/formic acids in the aqueous solution on three different types of basic polymeric adsorbents were experimentally measured at 30°C. Adsorption isotherms such as Langmuir, Freundlich and Sips were applied to correlate the single-solute adsorption data. Results demonstrated that the adsorption isotherms of both acids on all...
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