Recovery of Lactic Acid by Batch Distillation with Chemical Reactions Using Ion Exchange Resin

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Batch distillation of lactic acid with the simultaneous reactions was studied. Lactic acid was reacted with methanol, and methyl lactate was produced by the esterification reaction. The volatile methyl lactate was distilled simultaneously with the hydrolysis reaction into lactic acid. To recover pure lactic acid through two reactions and distillation, batch distillation system consisted of two condensers, feed vessel, and reboiler was studied. For both reactions of esterification and hydrolysis, the acidic cation exchange resin was used as a solid catalyst. As the concentration of catalyst increased, the yield of recovered lactic acid was increased. As the feed concentration of lactic acid and the reactant molar ratio in the esterification reaction decreased, the recovery yield of lactic acid was increased. The yield of recovered lactic acid was as high as 95%. When impure lactic acid solution obtained from bacterial fermentation was used as feed, highly pure lactic acid solution was obtained with yield of 92% in reboiler.

収録刊行物

  • Journal of chemical engineering of Japan  

    Journal of chemical engineering of Japan 32(2), 184-189, 1999-04 

    The Society of Chemical Engineers, Japan

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各種コード

  • NII論文ID(NAID)
    10002067378
  • NII書誌ID(NCID)
    AA00709658
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00219592
  • NDL 記事登録ID
    4702167
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z53-R395
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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