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Reactive extraction of lactic acid with mixed tertiary amine extractants

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Biotechnology Techniques

Abstract

The mixture of tripropylamine (TPA) and trioctylamine (TOA) dissolved in 1-octanol/n-heptane was used in the reactive extraction of (L+)lactic acid in aqueous solution. Maximum distribution coefficients were obtained in the range from 6:4 to 8:2 weight ratio of TPA/TOA at 5% (w/w) lactic acid in aqueous phase and their extraction efficiencies were above 90%. By introducing TPA into TOA, the third phase formation could be overcome, thereby, the settling time is shorter than in the case of TOA only.

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Authors and Affiliations

  1. Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, Taejon, 305-701, Korea

    Yeon Ki Hong & Won Hi Hong

Authors
  1. Yeon Ki Hong
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  2. Won Hi Hong
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Correspondence to Won Hi Hong.

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Hong, Y.K., Hong, W.H. Reactive extraction of lactic acid with mixed tertiary amine extractants. Biotechnology Techniques 13, 915–918 (1999). https://doi.org/10.1023/A:1008903032300

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