Electromagnetically modified wettability and interfacial tension of hybrid ZnO/SiO2 nanofluids

Hassan, Yarima Mudassir and Guan, Beh Hoe and Chuan, Lee Kean and Khandaker, Mayeen Uddin and Sikiru, Surajudeen and Halilu, Ahmed and Adam, Abdullahi Abbas and Abdulkadir, Bashir Abubakar and Usman, Fahad (2022) Electromagnetically modified wettability and interfacial tension of hybrid ZnO/SiO2 nanofluids. Crystals, 12 (2). ISSN 2073-4352, DOI https://doi.org/10.3390/cryst12020169.

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Worldwide, reservoirs are having serious challenges on crude oil removal due to various factors affecting its mobility; hence, the approach of oil production needs to be rectified. Recently, various nanoparticles (NPs) were discovered to have aided in oil displacement to improve oil production by modifying some reservoir conditions thereby reducing interfacial tension (IFT) and rock surface wettability. However, the injected NPs in the reservoir are trapped within the rock pores and become worthless due to high temperature and pressure. Hence, introducing energy to the nanofluids via electromagnetic (EM) waves can improve nanoparticle (NPs) mobility in the reservoir for the attainment of oil displacements. In this work, hybrid ZnO/SiO2 NPs were selected by considering that the combination of two dielectric NPs may produce a single nanofluid that is expected to make the fluids more electrified under EM waves. The result showed that ZnO/SiO2 NPs reduced the IFT (mN/m) from 17.39 to 2.91, and wettability (degrees) from 141 to 61. Moreover, by introducing the EM waves to the fluids, the IFT was further reduced to 0.02 mN/m from 16.70 mN/m, and solid surface wettability was also reduced from 132 degrees to 58 degrees. The advancement observed during exposure to EM waves was attributed to the energy propagated to the fluids that polarize the free charges of the NPs and consequently activate the fluids by creating disturbances at the fluid/oil interface, which resulted in reduced IFT and wettability.

Item Type: Article
Funders: Universiti Teknologi PETRONAS, (Y-UTP-FRG) research grant (cost center) [015LC0-302]
Uncontrolled Keywords: Electromagnetic waves; Interfacial tension; Wettability alteration; ZnO; SiO2
Subjects: Q Science > QD Chemistry
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering > Department of Chemical Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 17 Aug 2022 05:36
Last Modified: 17 Aug 2022 05:36
URI: http://eprints.um.edu.my/id/eprint/33410

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