Development and validation of a dynamic model for regeneration of passivating baths using membrane contactors

Selective liquid membranes have been traditionally employed for liquid/liquid and gas/liquid mass transfer in a wide range of applications. In particular, the Emulsion Pertraction Technology (EPT) using hollow fiber membrane contactors is a promising alternative to carry out the selective separation of metals from complex mixtures. However, the application of a new technology requires of reliable mathematical models and parameters that serve for design and optimization purposes allowing to accurate scale-up processes. This work reports the methodology for the development of a dynamic model to describe the kinetics of the EPT separation-concentration process applied to the regeneration of spent trivalent chromium-based passivating baths. The regeneration stage aims at the selective removal of Zn2+ dragged from previous steps in the plating line, not affecting the level of Cr3+ concentration in the passivating bath. In the case study the mathematical model was initially developed in a r...

• Type: Journal
• Year: 2011
• Where: CCE
• Authors: Eugenio Bringas, Rosa Mediavilla, Ana María Urtiaga, Inmaculada Ortiz
• Keywords: CCE 2011, Mathematical Model, Passivating Bath, Selective, Software Engineering