Nondispersive solvent extraction modeling

Modeling of Nondispersive Solvent Extraction of Multicomponent Metallic Solutions. 1024... 

MODELING OF NONDISPERSIVE SOLVENT EXTRACTION OF MULTICOMPONENT METALLIC SOLUTIONS... 

As a representative example, the model will be applied to the separation of Ni and Cd by nondispersive solvent extraction with the mentioned assumptions to avoid duplicate equations, the subscript i has been used, where i = 1 represents cadmium and i = 2 represents nickel. 

In what follows the methodology for the selection of the operating conditions of a nondispersive solvent extraction process will be developed. As an example the removal and recovery of Cr(VI) from an indnstrial effluent of a surface treatment plant will be considered. The kinetic modeling including the extraction reactions. Equation (6.17) and Equation (6.22), and the mass balances of chromium compounds to the three fluid phases and considering the hollow fiber modules and the homoge-neization stirred tanks. Equation (6.30) through Equation (6.50) were described in Sections 6.3 and 6.4. 

Mass Ti ansfer The rate of mass transfer in a liquid-liquid extraction system implemented in a nondispersive membrane contactor is analyzed in the manner followed in conventional contactor analysis. The overall organic phase-based mass transfer coefficient Kio of a species i being extracted (or back extracted) from an aqueous solution into a solvent wetting the pores of a hydrophobic membrane is described via the resistances-in-series model ... 

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