Demulsification of Water-In-Oil Emulsion at Various Types of Base Oil using the Formulated Surfactant

The demulsification of the emulsion is influenced by the physical characteristic of the base oil and the operating variables. In the oil and gas industry, the presence of emulsions forming during the transportation and processing of the oils is undeniable. As emulsions forms, it creates a lot of issues to the industry such as restricted flow pressure, corrosion in pipeline, the failure of pumps and so on. Most of the researchers were focused on the demulsification for the crude oil emulsions, but there is no study done to demulsify base oil emulsions. Therefore, this research aims to become a benchmark for the identification of the optimum parameters for treating base oil emulsions in industries. In this research, the physical properties of different types of base oil are investigated and correlate them with the efficiency of the demulsification process from the various ranges of the mixing speed, water content, and volume of the formulated surfactant. Lastly, the optimum separation rate (demulsification) will be obtained from the correlation of the respective variables. The physical properties of base oils such as viscosity and density are analysed. The emulsion samples are prepared from various base oil and then demulsified with the formulated surfactant. The percentage of water separated will be measured. The results and correlation of the variables will be analysed using analysis of variance Analysis of Variance (ANOVA) in Design of Expert software. The optimization of the demulsification will be determined by Central composite design (CCD) for Response surface methodology (RSM). It is utilized to identify the influence of the variables on the response. The expected outcome would be that the optimum parameters for the most efficient demulsification of water-in-oil emulsion would be at 1500 rpm, 5 mL of formulated surfactant and 80% water content in emulsion. The efficiency of demulsification process will also be expected to be highest with the highest mixing speed, volume of surfactant and water content. Other than that, it is expected that the highest viscosity and density of base oil will have the lowest separation of water-in-oil emulsion.