Synthesis and Preliminary Demulsification Efficiency Evaluation of New Demulsifiers Based on Fatty Oils |
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| Authors: | Rasha A. El-Ghazawy Ahmed M. Al-Sabagh Nadia G. Kandile Mahmoud R. Noor El-Din |
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| Affiliation: | 1. Egyptian Petroleum Research Institute , Nasr City, Egypt basharosh_00@yahoo.com;3. Egyptian Petroleum Research Institute , Nasr City, Egypt;4. Chemistry Department, Faculty of Women , Ain Shams University , Heliopolis, Cairo, Egypt |
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| Abstract: | Three raw fatty oils were used as precursors for demulsifiers. The hydrolyzed form of each oil was adducted with maleic anhydride then modified by esterification with polyethylene glycols or ethyleneoxide-propyleneoxide block copolymers. The demulsfication efficiency, coalescence rate, some surface active, thermodynamic properties, and partition coefficient of a selected demulsifier were investigated. The best demulsifier shows 100% demulsification after 19 minutes at 300 ppm. A correlation between demulsification efficiency and rheological properties of the investigated demulsifier was investigated. Also, emulsification kinetics were followed by microscopic photography. A mechanism following coalescence and flocculation of water droplets is proposed. |
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| Keywords: | Demulsification mechanism photomicroscopy rheological properties |
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