A new approach for the simultaneous generation of electric energy and the treatment ofwaters contaminated by recalcitrant pollutants using salinity gradients was proposed. Reverseelectrodialysis allows for the generation of electric energy from salinity gradients. Indeed, theutilization of different salt concentrations gives a potential difference between the electrodes whichallows the generation of electric energy by using suitable electrolytes and an external circuit. Thesimultaneous generation of electric energy and the treatment of waters contaminated by Cr(VI) wassuccessfully achieved for the first time by reverse electrodialysis processes using salinity gradients andproper redox processes. The effect on the process of many operative parameters, such as the extent ofthe salinity gradient, the number of membrane pairs in the stack, the initial concentration of Cr(VI), theconcentration of the supporting electrolyte and the flow rates of the solutions fed in the stack, was alsoinvestigated.
|Numero di pagine||8|
|Stato di pubblicazione||Published - 2014|
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