Recyclable amine-functionalized magnetic nanoparticles for efficient demulsification of crude oil-in-water emulsions

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dc.citation.firstpage1553en_US
dc.citation.journalTitleEnvironmental Science: Water Research & Technologyen_US
dc.citation.lastpage1563en_US
dc.citation.volumeNumber4en_US
dc.contributor.authorWang, Qingen_US
dc.contributor.authorPuerto, Maura C.en_US
dc.contributor.authorWarudkar, Sumedhen_US
dc.contributor.authorBuehler, Jacken_US
dc.contributor.authorBiswal, Sibani L.en_US
dc.date.accessioned2018-10-31T18:20:48Zen_US
dc.date.available2018-10-31T18:20:48Zen_US
dc.date.issued2018en_US
dc.description.abstractProduced water from the oil and gas industry often contains stable crude oil-in-water emulsions that are typically difficult to treat with conventional separation methods. Amine-functionalized nanoparticles have demonstrated effective destabilization of crude oil-in-water emulsions by associating with natural surfactants present at the oilﾖwater interface leading to separation of oil from water under an external magnetic field. Effects of magnetic demulsifier concentration, reaction time and initial oil content of emulsion on the demulsification efficiency were investigated. The demulsification efficiency of emulsions can reach as high as 99.7% by the magnetic demulsifier. Our findings characterize the demulsification process as a function of nanoparticle concentration and elucidate the governing interactions between NH2-MNPs and emulsion droplets. Another important feature of this magnetic demulsifier is its capability to be recovered by solvent-washing and reused for subsequent demulsification cycles. The recovered magnetic demulsifier was proven to be effective in demulsifying O/W emulsion for at least 6 cycles, revealing its recyclability. Demulsification of O/W emulsions with NH2-MNPs has great potential as an efficient strategy for oil removal from produced water.en_US
dc.identifier.citationWang, Qing, Puerto, Maura C., Warudkar, Sumedh, et al.. "Recyclable amine-functionalized magnetic nanoparticles for efficient demulsification of crude oil-in-water emulsions." <i>Environmental Science: Water Research & Technology,</i> 4, (2018) Royal Society of Chemistry: 1553-1563. https://doi.org/10.1039/C8EW00188J.en_US
dc.identifier.doihttps://doi.org/10.1039/C8EW00188Jen_US
dc.identifier.urihttps://hdl.handle.net/1911/103253en_US
dc.language.isoengen_US
dc.publisherRoyal Society of Chemistryen_US
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by The Royal Society of Chemistry.en_US
dc.titleRecyclable amine-functionalized magnetic nanoparticles for efficient demulsification of crude oil-in-water emulsionsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
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