Extraction Equilibria of Glycolic Acid Using Tertiary Amines: Experimental Data and Theoretical Predictions

DATTA D., Asci Y. S., Tuyun A. F.

Journal of Chemical and Engineering Data, cilt.60, sa.11, ss.3262-3267, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 60 Sayı: 11
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1021/acs.jced.5b00497
  • Dergi Adı: Journal of Chemical and Engineering Data
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.3262-3267
  • İstanbul Üniversitesi Adresli: Evet

Özet

Extraction equilibrium of glycolic acid (1.5 mol.kg(-1)) from aqueous solutions has been carried out using a solvent/extractant consisting of 50 vol % trioctylamine (TOA) and 50 vol % tridodecylamine (TDA) in the concentration range of 0.194 mol.kg(-1) to 1.163 mol.kg(-1). The extract phase is diluted with dimethyl phthalate (DMP), methyl isobutyl ketone (MIBK), 2-octanone, 1-decanol, and cydohexylacetate (CHA). The data are represented by calculating distribution coefficients (D), loading factors (Z), and extraction efficiencies (% E) using experimental values. The highest value of D for the glycolic acid extraction is found to be 4.44 for DMP, 4.09 for MIRK, 3.78 for 2-octanone, 3.51 for 1-decanol, and 2.71 for CHA. A substantial amount (73.05 % to 81.61 %) of glycolic acid is recovered by all the amine-diluent systems and at 1.163 mol.kg(-1) initial concentration of (TOA + TDA) mixture.