Enhancing oil–solid and oil–water separation in heavy oil recovery by CO2‐responsive surfactants
Interfacial properties are of critical importance to various separation applications. In heavy oil recovery, for example, a low oil–water interfacial tension (IFT) benefits the separation of heavy oil from their host rocks, which becomes problematic in the later stage of oil–water separation. CO2‐re...
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| Veröffentlicht in: | AIChE journal 2021-01, Vol.67 (1), p.n/a |
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| creator | Lu, Yi Li, Rui Manica, Rogerio Liu, Qingxia Xu, Zhenghe |
| description | Interfacial properties are of critical importance to various separation applications. In heavy oil recovery, for example, a low oil–water interfacial tension (IFT) benefits the separation of heavy oil from their host rocks, which becomes problematic in the later stage of oil–water separation. CO2‐responsive surfactants were investigated to enhance the overall heavy oil recovery by switching their interfacial activity to the desired state in each stage. The surfactants at interfacially active state greatly enhanced the separation of heavy oil from hosting solids, as demonstrated by measuring contact angle and oil liberation using a custom‐designed on‐line visualization system. Meanwhile, the resulting heavy oil‐in‐water emulsions could also be easily demulsified by the bubbling of CO2 gas, which switched off the interfacial activity of the surfactants. Furthermore, CO2‐responsive surfactants could be partially recycled in process water to improve sustainability, making CO2‐responsive surfactants to be promising chemical aids in heavy oil production and many other vital industries. |
| doi_str_mv | 10.1002/aic.17033 |
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In heavy oil recovery, for example, a low oil–water interfacial tension (IFT) benefits the separation of heavy oil from their host rocks, which becomes problematic in the later stage of oil–water separation. CO2‐responsive surfactants were investigated to enhance the overall heavy oil recovery by switching their interfacial activity to the desired state in each stage. The surfactants at interfacially active state greatly enhanced the separation of heavy oil from hosting solids, as demonstrated by measuring contact angle and oil liberation using a custom‐designed on‐line visualization system. Meanwhile, the resulting heavy oil‐in‐water emulsions could also be easily demulsified by the bubbling of CO2 gas, which switched off the interfacial activity of the surfactants. 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In heavy oil recovery, for example, a low oil–water interfacial tension (IFT) benefits the separation of heavy oil from their host rocks, which becomes problematic in the later stage of oil–water separation. CO2‐responsive surfactants were investigated to enhance the overall heavy oil recovery by switching their interfacial activity to the desired state in each stage. The surfactants at interfacially active state greatly enhanced the separation of heavy oil from hosting solids, as demonstrated by measuring contact angle and oil liberation using a custom‐designed on‐line visualization system. Meanwhile, the resulting heavy oil‐in‐water emulsions could also be easily demulsified by the bubbling of CO2 gas, which switched off the interfacial activity of the surfactants. Furthermore, CO2‐responsive surfactants could be partially recycled in process water to improve sustainability, making CO2‐responsive surfactants to be promising chemical aids in heavy oil production and many other vital industries.</description><subject>Bubbling</subject><subject>Carbon dioxide</subject><subject>CO2‐responsive surfactant</subject><subject>Contact angle</subject><subject>Emulsions</subject><subject>heavy oil recovery</subject><subject>Interfacial properties</subject><subject>Oil</subject><subject>Oil recovery</subject><subject>oil‐solid separation</subject><subject>oil–water separation</subject><subject>Pollutants</subject><subject>Process water</subject><subject>Separation</subject><subject>Surface tension</subject><subject>Surfactants</subject><subject>Sustainability</subject><subject>switchable emulsion</subject><subject>Water reuse</subject><issn>0001-1541</issn><issn>1547-5905</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNotkE1qwzAQhUVpoWnaRW8g6NqJfqzIXgaTtoFANu1ayLKUKLiSKzkJ3uUIhdwwJ6nzs5r3Zh7z4APgFaMRRoiMpVUjzBGld2CAWcoTliN2DwYIIZz0C_wInmLc9I7wjAyAmbm1dMq6FfS2Ph2O0de2gtJVN7-XrQ4w6kYG2VrvoHVwreWuO99h0MrvdOhg2cFiSU6Hv6Bj4120Ow3jNhipWuna-AwejKyjfrnNIfh-n30Vn8li-TEvpotkhTmjianwBJVpyaoMZQxxLjHPMcs1V5wyjilGJMulqlLKtU55nlKjCK0MMaXkKqdD8Hb92wT_u9WxFRu_Da6vFCTlKM0JndA-Nb6m9rbWnWiC_ZGhExiJM0PRMxQXhmI6Ly6C_gMxF2kj</recordid><startdate>202101</startdate><enddate>202101</enddate><creator>Lu, Yi</creator><creator>Li, Rui</creator><creator>Manica, Rogerio</creator><creator>Liu, Qingxia</creator><creator>Xu, Zhenghe</creator><general>John Wiley & Sons, Inc</general><general>American Institute of Chemical Engineers</general><scope>7ST</scope><scope>7U5</scope><scope>8FD</scope><scope>C1K</scope><scope>L7M</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0001-8118-1920</orcidid><orcidid>https://orcid.org/0000-0002-3890-9223</orcidid><orcidid>https://orcid.org/0000-0002-2371-7368</orcidid></search><sort><creationdate>202101</creationdate><title>Enhancing oil–solid and oil–water separation in heavy oil recovery by CO2‐responsive surfactants</title><author>Lu, Yi ; Li, Rui ; Manica, Rogerio ; Liu, Qingxia ; Xu, Zhenghe</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-g1753-fd160b4b5d8085077a179159e7c73571310289acd437ee47943fc23df2fba7c93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Bubbling</topic><topic>Carbon dioxide</topic><topic>CO2‐responsive surfactant</topic><topic>Contact angle</topic><topic>Emulsions</topic><topic>heavy oil recovery</topic><topic>Interfacial properties</topic><topic>Oil</topic><topic>Oil recovery</topic><topic>oil‐solid separation</topic><topic>oil–water separation</topic><topic>Pollutants</topic><topic>Process water</topic><topic>Separation</topic><topic>Surface tension</topic><topic>Surfactants</topic><topic>Sustainability</topic><topic>switchable emulsion</topic><topic>Water reuse</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lu, Yi</creatorcontrib><creatorcontrib>Li, Rui</creatorcontrib><creatorcontrib>Manica, Rogerio</creatorcontrib><creatorcontrib>Liu, Qingxia</creatorcontrib><creatorcontrib>Xu, Zhenghe</creatorcontrib><collection>Environment Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>AIChE journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lu, Yi</au><au>Li, Rui</au><au>Manica, Rogerio</au><au>Liu, Qingxia</au><au>Xu, Zhenghe</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Enhancing oil–solid and oil–water separation in heavy oil recovery by CO2‐responsive surfactants</atitle><jtitle>AIChE journal</jtitle><date>2021-01</date><risdate>2021</risdate><volume>67</volume><issue>1</issue><epage>n/a</epage><issn>0001-1541</issn><eissn>1547-5905</eissn><abstract>Interfacial properties are of critical importance to various separation applications. In heavy oil recovery, for example, a low oil–water interfacial tension (IFT) benefits the separation of heavy oil from their host rocks, which becomes problematic in the later stage of oil–water separation. CO2‐responsive surfactants were investigated to enhance the overall heavy oil recovery by switching their interfacial activity to the desired state in each stage. The surfactants at interfacially active state greatly enhanced the separation of heavy oil from hosting solids, as demonstrated by measuring contact angle and oil liberation using a custom‐designed on‐line visualization system. Meanwhile, the resulting heavy oil‐in‐water emulsions could also be easily demulsified by the bubbling of CO2 gas, which switched off the interfacial activity of the surfactants. 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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Bubbling Carbon dioxide CO2‐responsive surfactant Contact angle Emulsions heavy oil recovery Interfacial properties Oil Oil recovery oil‐solid separation oil–water separation Pollutants Process water Separation Surface tension Surfactants Sustainability switchable emulsion Water reuse |
| title | Enhancing oil–solid and oil–water separation in heavy oil recovery by CO2‐responsive surfactants |
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