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Investigations of crude-oil emulsions at the micro-to-nano scales
•The determination of the presence of naturally occurring surfactants in the crude-oil.•Droplet size determination if emulsified water at nanoscale in the crude-oil.•Imaging of naturally surfactant made bilayer around the emulsified water in the crude-oil.•Determination of fraction of emulsified wat...
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Published in: | Fuel (Guildford) 2022-04, Vol.313, p.122692, Article 122692 |
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creator | Ravaux, Florent Medina, Sandra Behzad, Ali R. Zafar, Humaira George, Abraham Morin, Stephane Ghaffour, Noreddine Anjum, Dalaver H. |
description | •The determination of the presence of naturally occurring surfactants in the crude-oil.•Droplet size determination if emulsified water at nanoscale in the crude-oil.•Imaging of naturally surfactant made bilayer around the emulsified water in the crude-oil.•Determination of fraction of emulsified water at nanoscale in the crude-oil.
The removal of the micro droplets of emulsified water from crude oil causes high cost and energy. In this paper we show that cryo electron microscopy (cryo-EM) imaging of micro and nano emulsions prepared from United Arab Emirate based crude oil provides critical information on their stability. Specifically, the cryoSEM imaging analysis applied to emulsion of murban-2019, and upper zakum-2019 crude-oils allowed determining naturally occurring surfactants in these crude-oils. Moreover, the applied method also turned out to be an efficient way to qualitatively investigate the effect of synthetic surfactant on the stability of the emulsions. The high resolution cryoTEM imaging analysis of emulsions from upper zakum-2019 sample enabled visualizing “bilayer” of naturally occurring surfactants, presumably the asphaltene. The cryoTEM analysis further allowed estimating the volume-fraction of emulsified water in the crude-oil at nanoscales and turned out to be about 1% for the upper zakum-2019 samples. |
doi_str_mv | 10.1016/j.fuel.2021.122692 |
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The removal of the micro droplets of emulsified water from crude oil causes high cost and energy. In this paper we show that cryo electron microscopy (cryo-EM) imaging of micro and nano emulsions prepared from United Arab Emirate based crude oil provides critical information on their stability. Specifically, the cryoSEM imaging analysis applied to emulsion of murban-2019, and upper zakum-2019 crude-oils allowed determining naturally occurring surfactants in these crude-oils. Moreover, the applied method also turned out to be an efficient way to qualitatively investigate the effect of synthetic surfactant on the stability of the emulsions. The high resolution cryoTEM imaging analysis of emulsions from upper zakum-2019 sample enabled visualizing “bilayer” of naturally occurring surfactants, presumably the asphaltene. The cryoTEM analysis further allowed estimating the volume-fraction of emulsified water in the crude-oil at nanoscales and turned out to be about 1% for the upper zakum-2019 samples.</description><identifier>ISSN: 0016-2361</identifier><identifier>EISSN: 1873-7153</identifier><identifier>DOI: 10.1016/j.fuel.2021.122692</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Asphaltenes ; Bilayers ; Crude oil ; Crude oil emulsions ; cryoSEM ; cryoTEM ; Electron microscopy ; Emulsions ; Image resolution ; Oil refining technologies ; Stability analysis ; Surfactants</subject><ispartof>Fuel (Guildford), 2022-04, Vol.313, p.122692, Article 122692</ispartof><rights>2021 Elsevier Ltd</rights><rights>Copyright Elsevier BV Apr 1, 2022</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c372t-c2f944c066b045670dd86bd4199a46c8f42d6979734b72cafd48cb92ab30b03</citedby><cites>FETCH-LOGICAL-c372t-c2f944c066b045670dd86bd4199a46c8f42d6979734b72cafd48cb92ab30b03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27903,27904</link.rule.ids></links><search><creatorcontrib>Ravaux, Florent</creatorcontrib><creatorcontrib>Medina, Sandra</creatorcontrib><creatorcontrib>Behzad, Ali R.</creatorcontrib><creatorcontrib>Zafar, Humaira</creatorcontrib><creatorcontrib>George, Abraham</creatorcontrib><creatorcontrib>Morin, Stephane</creatorcontrib><creatorcontrib>Ghaffour, Noreddine</creatorcontrib><creatorcontrib>Anjum, Dalaver H.</creatorcontrib><title>Investigations of crude-oil emulsions at the micro-to-nano scales</title><title>Fuel (Guildford)</title><description>•The determination of the presence of naturally occurring surfactants in the crude-oil.•Droplet size determination if emulsified water at nanoscale in the crude-oil.•Imaging of naturally surfactant made bilayer around the emulsified water in the crude-oil.•Determination of fraction of emulsified water at nanoscale in the crude-oil.
The removal of the micro droplets of emulsified water from crude oil causes high cost and energy. In this paper we show that cryo electron microscopy (cryo-EM) imaging of micro and nano emulsions prepared from United Arab Emirate based crude oil provides critical information on their stability. Specifically, the cryoSEM imaging analysis applied to emulsion of murban-2019, and upper zakum-2019 crude-oils allowed determining naturally occurring surfactants in these crude-oils. Moreover, the applied method also turned out to be an efficient way to qualitatively investigate the effect of synthetic surfactant on the stability of the emulsions. The high resolution cryoTEM imaging analysis of emulsions from upper zakum-2019 sample enabled visualizing “bilayer” of naturally occurring surfactants, presumably the asphaltene. The cryoTEM analysis further allowed estimating the volume-fraction of emulsified water in the crude-oil at nanoscales and turned out to be about 1% for the upper zakum-2019 samples.</description><subject>Asphaltenes</subject><subject>Bilayers</subject><subject>Crude oil</subject><subject>Crude oil emulsions</subject><subject>cryoSEM</subject><subject>cryoTEM</subject><subject>Electron microscopy</subject><subject>Emulsions</subject><subject>Image resolution</subject><subject>Oil refining technologies</subject><subject>Stability analysis</subject><subject>Surfactants</subject><issn>0016-2361</issn><issn>1873-7153</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LxDAQhoMouK7-AU8Fz6mTj00a8LIsfiwseNB7SJNUU7rNmrQL_nu71rOngeF9Zl4ehG4JlASIuG_LZvRdSYGSklAqFD1DC1JJhiVZsXO0gCmFKRPkEl3l3AKArFZ8gdbb_ujzED7MEGKfi9gUNo3O4xi6wu_HLv-uzVAMn77YB5siHiLuTR-LbE3n8zW6aEyX_c3fXKK3p8f3zQvevT5vN-sdtkzSAVvaKM4tCFEDXwkJzlWidpwoZbiwVcOpE0oqyXgtqTWN45WtFTU1gxrYEt3NVw8pfo1TY93GMfXTQ00FB1CVEGxK0Tk11cw5-UYfUtib9K0J6JMo3eqTKH0SpWdRE_QwQ35qfww-6WyD7613IXk7aBfDf_gP4AdwlQ</recordid><startdate>20220401</startdate><enddate>20220401</enddate><creator>Ravaux, Florent</creator><creator>Medina, Sandra</creator><creator>Behzad, Ali R.</creator><creator>Zafar, Humaira</creator><creator>George, Abraham</creator><creator>Morin, Stephane</creator><creator>Ghaffour, Noreddine</creator><creator>Anjum, Dalaver H.</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7T7</scope><scope>7TA</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>JG9</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>P64</scope></search><sort><creationdate>20220401</creationdate><title>Investigations of crude-oil emulsions at the micro-to-nano scales</title><author>Ravaux, Florent ; 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The removal of the micro droplets of emulsified water from crude oil causes high cost and energy. In this paper we show that cryo electron microscopy (cryo-EM) imaging of micro and nano emulsions prepared from United Arab Emirate based crude oil provides critical information on their stability. Specifically, the cryoSEM imaging analysis applied to emulsion of murban-2019, and upper zakum-2019 crude-oils allowed determining naturally occurring surfactants in these crude-oils. Moreover, the applied method also turned out to be an efficient way to qualitatively investigate the effect of synthetic surfactant on the stability of the emulsions. The high resolution cryoTEM imaging analysis of emulsions from upper zakum-2019 sample enabled visualizing “bilayer” of naturally occurring surfactants, presumably the asphaltene. The cryoTEM analysis further allowed estimating the volume-fraction of emulsified water in the crude-oil at nanoscales and turned out to be about 1% for the upper zakum-2019 samples.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.fuel.2021.122692</doi><oa>free_for_read</oa></addata></record> |
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subjects | Asphaltenes Bilayers Crude oil Crude oil emulsions cryoSEM cryoTEM Electron microscopy Emulsions Image resolution Oil refining technologies Stability analysis Surfactants |
title | Investigations of crude-oil emulsions at the micro-to-nano scales |
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