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Modeling of Liquid-Membrane Extraction Processes

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Hydrometallurgical Process Fundamentals

Part of the book series: NATO Conference Series ((MASC,volume 10))

Abstract

A general mathematical model containing overall mass transfer coefficients for extraction and leakage has been developed for extractions by liquid surfactant membranes (LM). In this model, two extraction cases are considered—one has chemical reagent in the external feed phase to convert the leaking species into an extractable form for re-extraction into the LM emulsion, the other does not have reagent in the external phase. Most LM extraction systems can be classified into these two cases. Mass transfer equations to calculate solute recovery, contact time, extractor size, and chemical reagent consumption in relation to overall mass transfer coefficients have been derived and can be used to predict the extraction performance of a continuous LM process from a simple batch extraction experiment. It is shown from the model that the reagent for chemical conversion in the external phase can enhance extraction greatly and can minimize the effect of leakage on extraction significantly. This model has been applied successfully to experimental data in LM extractions, such as separations of chromium and phenol from their aqueous solutions.

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Author information

Authors and Affiliations

  1. Exxon Research and Engineering Company, Clinton Township, New Jersey, 08801, USA

    W. S. Ho

  2. UOP Inc., Des Plaines, Illinois, 60016, USA

    Norman N. Li

Authors
  1. W. S. Ho
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  2. Norman N. Li
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Editor information

Editors and Affiliations

  1. Mackay School of Mines, University of Nevada Reno, Reno, Nevada, USA

    Renato G. Bautista

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© 1984 Springer Science+Business Media New York

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Ho, W.S., Li, N.N. (1984). Modeling of Liquid-Membrane Extraction Processes. In: Bautista, R.G. (eds) Hydrometallurgical Process Fundamentals. NATO Conference Series, vol 10. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-2274-8_22

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  • DOI: https://doi.org/10.1007/978-1-4899-2274-8_22

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4899-2276-2

  • Online ISBN: 978-1-4899-2274-8

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