Measurement of Partition Coefficient of L-Lysine HCl Amino Acid in  Polymer-Salt Aqueous Two-Phase Systems

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Mirsiaghi, Mona | 2009

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 39843 (06)
University: Sharif University of Technology
Department: Chemical and Petroleum Engineering
Advisor(s): Vossoughi, Manouchehr; Alamzadeh, Eiran
Abstract:
The partition coefficients of L-Lysine HCL were measured in polymer-salt aqueous two-phase systems. These systems contain polyethylene glycol with nominal molecular weight of 4000 or 10000 and two different salts (di-potassium hydrogen phosphate or tri-sodium citrate 5,5-hydrate). The experimental data were obtained at temperatures 293.15, 298.15 and 303.15 K. The effects of temperature, pH, polymer and salt concentrations, polymer molecular weight and salt type on the partitioning of L-Lysine HCL were also studied. The results showed that salt concentration has a significant effect on the partition coefficient while temperature has a low effect. The experimental partition coefficients of L-Lysine HCL were used in correlating the model proposed by Diamond and Hsu
Keywords:
Aqueous Two-Phase System ; Polymers ; Salts ; Partitioning ; Lysine

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