Determination of Surfactant Parameter for Demulsifying the Water-Gasoline Emulsion Based on HLD Concept
Volume Title: 1
1Process Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University
2Chemical Engineering Faculty, Tarbiat Modares University
Emulsion treatments are one of the important processes from the environmental point of view. The process of separating the emulsion systems is very complicated. It was recognized that if the combination of surfactant-oil-water systems reaches the microemulsion type of Winsor III, it will be at the optimum formulation for separation. HLD—which stands for the hydrophilic-lipophilic deviation—plays an important role in interpreting the phase behavior of microemulsion systems. In order to use the HLD concept correctly, each term in its formula should be found accurately. In this work, based on a simple and accurate method the hydrophobicity of gasoline (EACN) is found and at the end, the surfactant parameter which is appropriate for demulsification of a water-gasoline emulsion is obtained.