Journal of South China University of Technology(Natural Science Edition) ›› 2019, Vol. 47 ›› Issue (5): 25-31.doi: 10.12141/j.issn.1000-565X.180580

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Application of Scaled Particle Theory to Extraction of 2，3-Butanediol Model Solutions

YI Conghua SONG Wenli   

  1. School of Chemistry and Chemical Engineering，South China University of Technology，Guangzhou 510640，Guangdong，China
  • Received:2018-11-22 Revised:2018-12-21 Online:2019-05-25 Published:2019-04-01
  • Contact: 易聪华( 1979-) ，女，博士，副教授，主要从事发酵液下游分离和理论研究 E-mail:chyi@scut.edu.cn
  • About author:易聪华( 1979-) ，女，博士，副教授，主要从事发酵液下游分离和理论研究
  • Supported by:
     Supported by the National Natural Science Foundation of China( 21576106

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Abstract: In order to provide a theoretical guidance for the selection of salting-out agents and extraction agents， the ionic salvation free energies of eleven kinds of salts and three kinds of solvents in 10% 2，3-butanediol model fermentation solutions were calculated based on the scaled particle theory，with the corresponding extraction effects being ranked according to the experimental extraction results obtained at 37 ℃ ． It is found that，in the several parts consisting of the standard molar solvation free energy，the electrostatic free energy between the salt and the solvent，whose larger absolute value means better salt extraction effect，is the key factor affecting the extraction; and that，with the increase of absolute value of the standard molar solvation free energy，the mass fraction of 2，3- butanediol increases linearly，while that of water decreases linearly

Key words: ionic solvation free energy, scaled particle theory, salt effect, salting-out extraction

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