Effect of the structure of commercial poly(ethylene oxide-b-propylene oxide) demulsifier bases on the demulsification of water-in-crude oil emulsions: elucidation of the demulsification mechanism
Water-in-crude oil emulsions are formed during petroleum production and asphaltenes play an important role in their stabilization. Demulsifiers are added to destabilize such emulsions,however the demulsification mechanism is not completely known. In this paper, the performances of commercial poly(et...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2010-01-01
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| Series: | Química Nova |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010000800009 |
| _version_ | 1818130388246069248 |
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| author | João Batista V. S. Ramalho Fernanda C. Lechuga Elizabete F. Lucas |
| author_facet | João Batista V. S. Ramalho Fernanda C. Lechuga Elizabete F. Lucas |
| author_sort | João Batista V. S. Ramalho |
| collection | DOAJ |
| description | Water-in-crude oil emulsions are formed during petroleum production and asphaltenes play an important role in their stabilization. Demulsifiers are added to destabilize such emulsions,however the demulsification mechanism is not completely known. In this paper, the performances of commercial poly(ethylene oxide-b-propylene oxide) demulsifiers were studied using synthetic water-in-oil emulsions and model-systems (asphaltenes in organic solvent). No change in the asphaltene aggregate size induced by the demulsifier was observed. The demulsification performance decreased as the asphaltene aggregate size increased, so it can be suggested that the demulsification mechanism is correlated to the voids between the aggregates adsorbed on the water droplets surface. |
| first_indexed | 2024-12-11T08:04:15Z |
| format | Article |
| id | doaj.art-6d383990e2c74e1199a76ef06f64f4a7 |
| institution | Directory Open Access Journal |
| issn | 0100-4042 1678-7064 |
| language | English |
| last_indexed | 2024-12-11T08:04:15Z |
| publishDate | 2010-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj.art-6d383990e2c74e1199a76ef06f64f4a72022-12-22T01:15:03ZengSociedade Brasileira de QuímicaQuímica Nova0100-40421678-70642010-01-013381664167010.1590/S0100-40422010000800009Effect of the structure of commercial poly(ethylene oxide-b-propylene oxide) demulsifier bases on the demulsification of water-in-crude oil emulsions: elucidation of the demulsification mechanismJoão Batista V. S. RamalhoFernanda C. LechugaElizabete F. LucasWater-in-crude oil emulsions are formed during petroleum production and asphaltenes play an important role in their stabilization. Demulsifiers are added to destabilize such emulsions,however the demulsification mechanism is not completely known. In this paper, the performances of commercial poly(ethylene oxide-b-propylene oxide) demulsifiers were studied using synthetic water-in-oil emulsions and model-systems (asphaltenes in organic solvent). No change in the asphaltene aggregate size induced by the demulsifier was observed. The demulsification performance decreased as the asphaltene aggregate size increased, so it can be suggested that the demulsification mechanism is correlated to the voids between the aggregates adsorbed on the water droplets surface.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010000800009poly(ethylene oxide-b-propylene oxide)demulsification mechanismwater-in-crude oil emulsion |
| spellingShingle | João Batista V. S. Ramalho Fernanda C. Lechuga Elizabete F. Lucas Effect of the structure of commercial poly(ethylene oxide-b-propylene oxide) demulsifier bases on the demulsification of water-in-crude oil emulsions: elucidation of the demulsification mechanism Química Nova poly(ethylene oxide-b-propylene oxide) demulsification mechanism water-in-crude oil emulsion |
| title | Effect of the structure of commercial poly(ethylene oxide-b-propylene oxide) demulsifier bases on the demulsification of water-in-crude oil emulsions: elucidation of the demulsification mechanism |
| title_full | Effect of the structure of commercial poly(ethylene oxide-b-propylene oxide) demulsifier bases on the demulsification of water-in-crude oil emulsions: elucidation of the demulsification mechanism |
| title_fullStr | Effect of the structure of commercial poly(ethylene oxide-b-propylene oxide) demulsifier bases on the demulsification of water-in-crude oil emulsions: elucidation of the demulsification mechanism |
| title_full_unstemmed | Effect of the structure of commercial poly(ethylene oxide-b-propylene oxide) demulsifier bases on the demulsification of water-in-crude oil emulsions: elucidation of the demulsification mechanism |
| title_short | Effect of the structure of commercial poly(ethylene oxide-b-propylene oxide) demulsifier bases on the demulsification of water-in-crude oil emulsions: elucidation of the demulsification mechanism |
| title_sort | effect of the structure of commercial poly ethylene oxide b propylene oxide demulsifier bases on the demulsification of water in crude oil emulsions elucidation of the demulsification mechanism |
| topic | poly(ethylene oxide-b-propylene oxide) demulsification mechanism water-in-crude oil emulsion |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010000800009 |
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