Demulsification of Crude Oil Emulsions Using Some New Water-Soluble Schiff Base Surfactant Blends
Abstract
Six new surfactant blends were prepared by mixing one Schiff base non ionic surfactant prepared by etherification of Schiff base monomer with β′,β-dichlorodiethylether and PEG 400 in presence of NaOH with six water soluble Schiff base non-ionic surfactants prepared in the same way but etherified with PEG 2000. The mixing process was based on the high dehydration rates given by the PEG 400 Schiff base surfactant compared to the other PEG 2000 surfactants. The experimental results of this study indicate that the demulsification rates of these blends are higher than those of the PEG 400 surfactant. Demulsification process was carried out on an emulsion of w/o ratio 50:50 and studied at 60°C at two different concentrations of the demulsifiers (200 and 240 ppm). The dehydration rates of the six prepared blends reached 100%. The total dehydration time varied from 50 minutes up to 2 hours.
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As a result of enhanced migration toward the interface, the surfactant forms a continuous hydrophilic pathway between the dispersed water droplets, leading to rupture of the interfacial film surrounding the water droplets.
“As a result of such enhanced migration toward the interface, the surfactant forms a continuous hydrophilic pathway between the dispersed water droplets.Th is leads to a rapture of the interfacial fi lm surrounding the water droplets (Atta et al., 2009).”
From Demulsifier Selection Guideline for Destabilizing Water-in-Oil Emulsion for both non-EOR and EOR Application (2023) · cites this paper as Atta et al., 2009
Surfactants possessing high RSN migrate faster to the interface than those having low RSN.
“Accordingly, the surfactants possessing high RSN migrate faster to the interface than those having low RSN.”
From Demulsifier Selection Guideline for Destabilizing Water-in-Oil Emulsion for both non-EOR and EOR Application (2023) · cites this paper as Atta et al., 2009
Increase in HLB/RSN value increases the solubility of the demulsifier in the aqueous phase (water).
“Increase in HLB/ RSN value increases the solubility of the demulsifi er in the aqueous phase which is water.”
From Demulsifier Selection Guideline for Destabilizing Water-in-Oil Emulsion for both non-EOR and EOR Application (2023) · cites this paper as Atta et al., 2009
When the demulsifier is initially introduced to the water in oil emulsion, it will be thermodynamically stable at the interface of water droplets.
“When the demulsifier is initially introduced to the water in oil emulsion, it will be thermodynamically stable at the interface of water droplets.”
From Demulsifier Selection Guideline for Destabilizing Water-in-Oil Emulsion for both non-EOR and EOR Application (2023) · cites this paper as Atta et al., 2009
Cites
Wu, J., Xu, Y., Dabros, T., & Hamza, H. (2005) · Colloids and Surfaces A: Physicochemical and Engineering Aspects · doi:10.1016/j.colsurfa.2004.09.034 · Cited by 155 · see citing works
Dewatering of crude oil emulsions 3. Emulsion resolution by chemical means
Mohammed, R. A., Bailey, A. I., Luckham, P. F., & Taylor, S. E. (1994) · Colloids and Surfaces A: Physicochemical and Engineering Aspects · doi:10.1016/0927-7757(93)02706-k · Cited by 133 · see citing works
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Halim, N. H., Saaid, I. M., & Panuganti, S. R. (2023) · Substantia · doi:10.36253/substantia-2135 · Cited by 1 · see citing works
- Authors
- Atta, A. M., Abdel-Rahman, A. A.-H., Elsaeed, S. M., AbouElfotouh, S., & Hamad, N. A.
- Affiliations
- Egyptian Petroleum Research Institute (EG)
- b Faculty of Science, Department of Chemistry , Menoufia University , Shebin El-koum, Egypt
- a Egyptian Petroleum Research Institute , Nasr City, Cairo, Egypt
- New Cairo Academy (EG)
- Menoufia University (EG)
- Corresponding author
- Atta, Ayman M.
- Venue
- Journal of Dispersion Science and Technology
- Publisher
- Informa UK Limited
- Published
- 2009-04-13
- Volume
- 30
- Issue
- 5
- Pages
- 725-736
- ISSN
- 0193-2691 (ISSN-L)
- 1532-2351
- OpenAlex
- W2152104131
- Cited by
- 6
- References
- 2
- Citations by year
- 2025: 1 · 2016: 1 · 2015: 1 · 2014: 1 · 2012: 1
- FWCI
- 0.64
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Dispersion Science and Technology (publishedVersion)
- Topics
- Physical Sciences › Chemistry › Analytical Chemistry › Petroleum Processing and Analysis
- Physical Sciences › Chemistry › Organic Chemistry › Surfactants and Colloidal Systems
- Physical Sciences › Environmental Science › Pollution › Microbial bioremediation and biosurfactants
- Keywords
- crude oil emulsions, demulsification, water-in-oil emulsions, nonionic surfactants, surfactant mixtures, dehydration rate
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