Solubility of fructose in water-ethanol and water-methanol mixtures by using H-bonding models

TL;DR

This study measures fructose solubility in water-ethanol and water-methanol mixtures at various temperatures, proposing a new H-bonding modified Wilson model that best fits the experimental data and improves solubility predictions.

Contribution

A new thermodynamic H-bonding modified Wilson model is introduced, enhancing the accuracy of fructose solubility and density predictions in mixed solvents.

Findings

H-bonding modified Wilson model has lowest AAD% for data correlation.

H-bonding modified UNIQUAC provides the most accurate solubility predictions.

Experimental data confirms successful density correlation.

Abstract

Solubility of fructose in water-ethanol and water-methanol mixtures and density of each solution at 20, 30 and 40{\deg}C over a range of water mass percentage have been measured. A new thermodynamic model called H-bonding modified Wilson was proposed to describe solubility data satisfactorily. H-bonding modified UNIQUAC and H-bonding NRTL were studied and a comparison between these three models was performed. Literature data on solubility of fructose in these systems at 25, 40 and 60{\deg}C were used to calculate adjustable parameters of these three models. Also the density of solutions reported in this study was correlated successfully. The comparison results showed that H-bonding modified Wilson model has the lowest AAD% between these three models in correlation of literature solubility data and density data. Then prediction capability of each model was evaluated with the new experimental data which was reported in this study. The prediction results showed that H-bonding modified UNIQUAC is the most accurate model between these three models in prediction of solubility data.