Separation Characteristics of Lactic Acid by Using Mixed Tertiary Amine Extractants

혼합아민 추출제를 이용한 젖산의 분리특성

  • Published : 1999.10.01

Abstract

Lactic acid is of interested as the raw material of biodegradable polymer. In this study lactic acid was separated by reactive extraction with mixed tertiary amine extractant dissolved in 1-octanol/n-heptane. Mixed tertiary amine extractant was composed of tripropylamine(TPA) and trioctylamine(TOA). The concentration range of lactic acid is ca. 5wt% which is the concentration of lactic acid obtained from fermentation.Maximum distribution coeficient was obtained at 8:2 weight ratio of TPA/TOA and their extraction efficiencies were above 90%.

최근 들어 카르복실산 중에서 lactic acid는 생분해성 고분자의 원료물질로서 주목받고 있다. 본 연구에서는 혼합 3차 amine 추출제를 이용한 반응추출을 통해 lactic acid를 정제하였다. 다양한 TPA/TOA 혼합비에 따라 lactic acid의 분배계수를 얻었으며 그 결과 8:2의 혼합비에서 최대의 분배계수를 얻을 수 있었다. 또한 발효조에서 생산되는 lactic acid를 대상으로 하였을 때 혼합 3차 amine을 사용할 경우 추출효율이 90% 이상이 되는 것을 볼 때 본 연구에서 사용된 혼합 3차 amine이 발효 lactic acid의 정제에 적합한 추출제임을 알 수 있었다.

Keywords

References

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