Abstract
Different chemical demulsifiers were added to heavy Fula crude oil samples (Balila, Sudan) in screen test with and without the addition of silica nanoparticles (NPs). Two particle sizes of 25 nm and 95 nm were investigated using three different concentrations of 30 ppm, 60 ppm and 90 ppm. The addition of silica nanoparticles resulted in a clear improvement in demulsification in most cases. An increase of 150% in water separation was achieved with the addition of 25 nm silica NP suspension in a volume ratio of 1:0.5 (chemical demulsifier to silica nanoparticles) at a concentration of 60 ppm.
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