Study on the activity coefficients and solubilities of amino acids in aqueous solutions with perturbed-chain statistical associating fluid theory

2010 ◽  
Vol 27 (1) ◽  
pp. 267-277 ◽  
Author(s):  
Bong-Seop Lee ◽  
Ki-Chang Kim
Keyword(s):  
Amino Acids ◽  
Aqueous Solutions ◽  
Activity Coefficients ◽  
Statistical Associating Fluid Theory ◽  
Fluid Theory

Phase Equilibria and Surface Tensions for MDEA, DEA and their Aqueous Solutions

2013 ◽  
Vol 781-784 ◽  
pp. 2554-2559
Author(s):  
Song Tao Liu ◽  
Li Guang Qin ◽  
Dong Fu
Keyword(s):  
Experimental Data ◽  
Aqueous Solutions ◽  
Phase Equilibria ◽  
Gradient Theory ◽  
Surface Tensions ◽  
Statistical Associating Fluid Theory ◽  
Molecular Parameters ◽  
Fluid Theory ◽  
Influence Parameter ◽  
Density Gradient Theory

The phase equilibira and surface tensions of N-methyldiethanolamine (MDEA), diethanolamine (DEA) and their aqueous solutions were investigated by using the perturbed-chain statistical associating fluid theory (PC-SAFT) and density-gradient theory (DGT). The molecular parameters and influence parameter were respectively regressed by fitting to the experimental data of phase equilibria and surface tensions of pure fluids. With the molecular parameters and influence parameter as input, the surface tensions of MDEA, DEA and their aqueous solutions were correlated satisfactorily.

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