Correlation of the mean ionic activity coefficients of electrolytes in aqueous amino acid and peptide systems

Increase of vanillin partitioning using aqueous two phase system with promising nanoparticles

“…The binary interaction parameters of the NRTL model between (A-water), (B-water) and (A-B) pairs were obtained from the literature 26 . In this model, it is assumed that the salt cannot be dissociated into ionic species 26,27 .…”

“…MWCNTs are insoluble in aqueous systems and have weak chemical compatibility with polymer compounds. The previous research studies have suggested that the superficial modification of MWCNTs causes their compatibility to improve as well as their solubility to increase 27 . Therefore, surface modification of MWCNT by a functional group compatible with the biomolecule can be a significant factor in enhancing the partition coefficient.…”

Nonelectrolyte NRTL-NRF model to study thermodynamics of strong and weak electrolyte solutions

“…In this work, an excess Gibbs free energy function is proposed for electrolyte solution that is composed of the Nonelectrolyte NRTL-NRF model [10][11][12] as short-range contribution of excess Gibbs equation and the Pitzer-Debye-Hückel model [13] as long-range contribution. In the first step, the present model is adopted for representation of mean activity coefficient of 156 0021-9614/$ -see front matter Ó 2010 Elsevier Ltd. All rights reserved.…”

Modeling and prediction of activity coefficient ratio of electrolytes in aqueous electrolyte solution containing amino acids using artificial neural network

“…Pazuki et al [6] presented a model which is combination of long-range interactions and short-range interactions. For longrange interactions they used Khoshkbarchi-Vera [5] model and for short-range interactions they used one of the models, Wilson [7], the NRTL [8] and the NRTL-NRF [9,10].…”

“…In all previous works about modeling [3,5,6] of mean ionic activity coefficient ratio of electrolytes, experimental data are essential and in fact they are some correlations with much or less adjustable parameters. Therefore, if the experiment data are not available they fail to predict the activity coefficient ratio.…”