Header menu link for other important links
X
Enhanced partitioning of tryptophan in aqueous biphasic systems formed by benzyltrialkylammonium based ionic liquids: Evaluation of thermophysical and phase behavior
V. P. Priyanka, Anusha Basaiahgari,
Published in Elsevier B.V.
2017
Volume: 247
   
Pages: 207 - 214
Abstract
Ionic liquids (ILs) based aqueous biphasic systems (ABS) are envisioned to be promising separation and environmentally benign extraction media. In this context, novel ternary phase diagrams were determined for two ILs namely, Benzyltrimethylammonium chloride and Benzyltributylammonium chloride in presence of various potassium salts, K3PO4, K2HPO4, K2CO3 and KOH at 298.15 K. The influence of benzyl group substitution on the cation of IL and nature of various potassium salts on the phase behavior were analyzed. Experimental binodal data were fitted to Merchuk's equation and tie line compositions and tie line length were also determined. Further, these IL based ABS in presence of various potassium salts have been systematically scrutinized for their efficiency to extract Tryptophan. For the better understanding of the role of thermophysical properties on phase behavior and extraction capability, density and viscosity of coexisting phases were measured at various compositions in the temperature range from 293.15 to 328.15 K. Enhanced extraction coefficients achieved for the studied combinations of ILs and inorganic salts indicate the possible use of these ABS as efficient extraction systems. Further, the study of thermophysical properties suggested that selected ternary systems present more desirable features in terms of density and viscosity as compared to traditional polymer based ABS. © 2017 Elsevier B.V.
About the journal
JournalData powered by TypesetJournal of Molecular Liquids
PublisherData powered by TypesetElsevier B.V.
ISSN01677322
Open AccessNo
Concepts (23)
  •  related image
    Abs resins
  •  related image
    Amino acids
  •  related image
    Chlorine compounds
  •  related image
    Ionic liquids
  •  related image
    Liquids
  •  related image
    Metal recovery
  •  related image
    PHASE BEHAVIOR
  •  related image
    POTASH
  •  related image
    Potassium compounds
  •  related image
    Salts
  •  related image
    Solvent extraction
  •  related image
    Ternary systems
  •  related image
    Thermodynamic properties
  •  related image
    Viscosity
  •  related image
    AQUEOUS BIPHASIC SYSTEM
  •  related image
    BENZYLTRIBUTYLAMMONIUM CHLORIDE
  •  related image
    BENZYLTRIMETHYLAMMONIUM
  •  related image
    EXTRACTION COEFFICIENTS
  •  related image
    Hofmeister series
  •  related image
    Liquid-liquid extraction
  •  related image
    Partition coefficient
  •  related image
    Ternary phase diagrams
  •  related image
    Extraction