Comparing the performance of bioemulsifier produced from a strain of Bacillus licheniformis with Stabiram chemical emulsifier in formation of emulsion in order to reduce the viscosity of heavy oil

چکیده مقاله

In order to reduce the viscosity of the heavy crude, it is suggested to mix it with water and optimum emulsifiers to create a lower viscous fluid, oil-in-water (O/W) emulsions. In this study,O/W emulsion prepared by using the constant oil content of the emulsion at its optimum value 63.68 wt%, the other conditions were a temperature of 65 ◦C, pH of 2,a mixing speed of4200rpm and a mixing duration of 10min. The concentration of bioemulsifier in water was varied from 0.66 to1.1wt% and The concentration of chemical emulsifier was between 0,22 to 1.056 wt%. These emulsions were tested for relative rates of percent of bioemulsifier and emulsifier, viscosity of Brookfield viscometer. viscosity of heavy crud oil reduce 80% and use of biological emulsifier instead of chemical emulsifier is an environmentally-friendly approach which has the potential to increase emulsion stability to several days.

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