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KMID : 0380020040190010033
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Korean Journal of Biotechnology and Bioengineering
2004 Volume.19 No. 1 p.33 ~ p.37
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Reactive Extraction of Succinic Acid by Amine Extractants and Comparison of Extraction Characteristics of Maleic Acid
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Hong Won-Hee
Hong Yeon-Ki
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Abstract
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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.
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KEYWORD
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Succinic acid, reactive extraction, amine, dissociation of acid
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