Abstract
In this work the effect of molasses, as a bacterial nutrient, on the pH and surface tension of the aqueous phase, IFT, and phase behavior after one-week contact time was studied at 60degreesC. The results have shown that the pH value and surface tension of molasses solution as well as IFT have the same trends versus salinity. These properties as well as the phase behavior are function of NaCl concentration, contact time, pressure and initial pH value of the molasses solutions.