Investigation of chemical demulsification process by stability analyzer

Chemical demulsification process was studied by using Turbiscan Lab? Expert stability analyzer,which revealed the phenomena of flocculation,coagulation,sedimentation,creaming and phase separation during the demulsification process.Simultaneously the rate of the above-mentioned phenomena and the droplet size changes were quantitatively analyzed.Results showed that flocculation and coagulation of water droplets occured in the middle of the W/O model emulsion,while kept stable in the middle of the O/W model emulsion.Moreover,creaming and sedimentation were observed in the top of the W/O model emulsion and in the bottom of the O/W model emulsion while other parts kept stable.As the demulsification process proceeds,the mean water droplet diameter in the middle of W/O emulsion increased from 29.07 μm(0 h)to 73.17 μm(1.8 h),while the mean oil droplet diameter in the middle of O/W emulsion increased from 12.95 μm(0 h)to 14.03μm(1.6 h).