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Liquid-liquid equilibrium of poly(ethylene glycol) 4000+diammonium hydrogen phosphate plus water at different temperatures

Samuthira Pandian, Amaresh and Shreela, Murugesan and Iyyaswami, Regupathi and Thanapalan, Murugesan (2008) Liquid-liquid equilibrium of poly(ethylene glycol) 4000+diammonium hydrogen phosphate plus water at different temperatures. JOURNAL OF CHEMICAL AND ENGINEERING DATA , 53 (7 ). 1574-1578 . ISSN 0021-9568

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Abstract

Abstract: Liquid-liquid equilibrium for an aqueous two-phase system containing poly(ethylene glycol) 4000 + diammonium hydrogen phosphate + water was studied at four different temperatures of (25, 30, 35, and 45) degrees C. The binodal curve was fitted to three different empirical equations relating the concentrations of PEG 4000 and diammonium hydrogen phosphate, and the coefficients were estimated for the respective temperatures for all three equations. The effective excluded volume values were obtained from the binodal model for the present system, and salting-out ability of the salt was discussed. Tie line compositions were correlated using the Othmer-Tobias and Bancroft equations, and the parameters are also reported. Further, the experimental binodal data of the poly(ethylene glycol) 4000 + diammonium hydrogen phosphate + water system were compared to poly(ethylene glycol) 6000 + diammonium hydrogen phosphate + water for (25, 35, and 45) degrees C.

Item Type:Article
Impact Factor:Cites in 2009 to articles published in: 2008 = 757 Number of articles published in: 2008 = 547 2007 = 941 2007 = 455 Sum: 1698 Sum: 1002 Calculation: Cites to recent articles 1698 = 1.695 Number of recent articles 1002
Uncontrolled Keywords:Chemistry, Multidisciplinary; Engineering, Chemical
Subjects:T Technology > TP Chemical technology
Departments / MOR / COE:Departments > Chemical Engineering
ID Code:2825
Deposited By: Mr Helmi Iskandar Suito
Deposited On:21 Sep 2010 03:57
Last Modified:19 Jan 2017 08:26

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