Extraction Equilibria of Succinic Acid from Aqueous Solutions by Amberlite LA-2 in Various Diluents


Asci Y. S. , Inci I.

JOURNAL OF CHEMICAL AND ENGINEERING DATA, vol.55, no.2, pp.847-851, 2010 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 55 Issue: 2
  • Publication Date: 2010
  • Doi Number: 10.1021/je9004917
  • Journal Name: JOURNAL OF CHEMICAL AND ENGINEERING DATA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.847-851
  • Istanbul University Affiliated: Yes

Abstract

The aim of this study is to investigate the extraction of succinic acid from aqueous solutions by different organic solutions containing Amberlite LA-2, a secondary amine mixture. Extraction equilibria of succinic acid in the solution of Amberlite LA-2 in seven individual diluents at a temperature of 298.15 K have been measured. Using Bizek’s approach, two acid−amine complexes, (HO)·(R2N) and (HO)·(R2N)2, are assumed to exist in the organic phase in the case of proton-donating diluents, while the complexes (HO)·(R2N) and (HO)2·(R2N)3 are suggested in the case of nonproton-donating diluents. Important data for the design of separation units have been obtained as a result of batch experiments. These data are distribution coefficients (D), loading factors (Z), extraction efficiencies (E), and overall extraction constants (K11, K12, and K23).

The aim of this study is to investigate the extraction of succinic acid from aqueous solutions by different organic solutions containing Amberlite LA-2, a secondary amine mixture. Extraction equilibria of succinic acid in the solution of Amberlite LA-2 in seven individual diluents at a temperature of 298.15 K have been measured. Using Bizek's approach, two acid-amine complexes, (HO)center dot(R2N) and (HO)center dot(R2N)(2), are assumed to exist in the organic phase in the case of proton-donating diluents, while the complexes (HO)center dot(R2N) and (HO)(2)center dot(R2N)(3) are suggested in the case of nonproton-donating diluents. Important data for the design of separation units have been obtained as a result of batch experiments. These data are distribution coefficients (D), loading factors (Z), extraction efficiencies (E), and overall extraction constants (K-11, K-12, and K-23).