KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Reactive Extraction of Succinic Acid by Amino Extractants and Comparison of Extraction Characteristics of Maleic Acid

아민계 추출제를 이용한 숙신산의 반응추출 및 말산과의 추출특성 비교

  • 홍원희 (한국과학기술원 생명화학공학과) ;
  • 홍연기 (충주대학교 화학공학과)
  • Published : 2004.02.01
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Abstract

Succinic acid is of interested as the raw material of biodegradable polymer. In this study, succinic acid was separated by reactive extraction using amine extractants such as TOA (trioctylamine) and Aliquat 336. The extractability of TOA for succinic acid was higher than that of Aliquat 336. The distribution of succinic acid into organic phase was decreased with increasing pH in aqueous phase. However, the effect of pH on the extractability of Aliquat 336 was little. In the case of maleic acid which has similar structure to succinic acid, the extractability for maleic acid was higher than that for succinic acid. It was mainly due to the difficulty of deprotonation of second carboxylic group by intramolecular hydrogen bonding.

최근 들어 succinic acid는 기존의 용도 이외에도 생분해성 고분자의 원료물질로서 주목받고 있다. 본 연구에서는 3차 amine인 TOA와 4차 amine 염인 Aliquat 336을 이용하여 succinic acid에 대한 반응추출을 실시하였다. 그 결과 Aliquat 336에 비해 TOA의 추출능이 더 높은 것으로 확인되었다. 또한 pH에 따른 추출능의 변화는 TOA, Aliquat 336 모두 pH 증가에 따라 추출능이 감소하는 것으로 나타났으며 Aliquat 336의 경우 pH의 영향은 TOA에 비해 적음을 알 수 있었다. succinic acid와 기하학적으로 다른 구조를 가지는 maleic acid의 경우 분자 내 수소 결합으로 인한 두 번째 카르복실기의 deprotonation이 어렵게 되므로 succinic acid에 비해 추출능이 좋은 것으로 나타났다.

Keywords

References

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