Kinetics of Zinc Recovery from Spent Pickling Effluents
This work has focused on the study of the kinetics of zinc removal from spent pickling effluents by means of membrane-assisted solvent extraction (NDSX), as the main step in the valorization process of the metal. Tributyl phosphate (TBP) and service water were used as extraction (EX) and back-extrac...
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Published in | Industrial & engineering chemistry research Vol. 46; no. 3; pp. 907 - 912 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Washington, DC
American Chemical Society
31.01.2007
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Subjects | |
Online Access | Get full text |
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Summary: | This work has focused on the study of the kinetics of zinc removal from spent pickling effluents by means of membrane-assisted solvent extraction (NDSX), as the main step in the valorization process of the metal. Tributyl phosphate (TBP) and service water were used as extraction (EX) and back-extraction (BEX) agents, respectively. Working with hollow fiber membrane contactors, kinetic experiments were performed in order to analyze the influence of operation variables on the rate of zinc separation. A mathematical model that considers diffusion through the organic membrane as the main kinetic resistance was developed, and the membrane mass transport coefficient was estimated by means of the parameter estimation tool gEST (from gPROMS) to obtain a value of K m = 3.89 × 10-4 m/h. Simulated results agreed satisfactorily with experimental data, thus confirming the validity of the kinetic model and parameters. |
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Bibliography: | ark:/67375/TPS-4NGCXFMF-2 istex:FA2B0A2D2A4C7A6E3B81F96973E2357CB72E1CAF ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0888-5885 1520-5045 |
DOI: | 10.1021/ie060836w |