Characterizing adsorption of associating surfactants on carbonates surfaces

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dc.citation.firstpage684
dc.citation.journalTitleJournal of Colloid and Interface Science
dc.citation.lastpage692
dc.citation.volumeNumber513
dc.contributor.authorJian, Guoqing
dc.contributor.authorPuerto, Maura
dc.contributor.authorWehowsky, Anna
dc.contributor.authorMiller, Clarence
dc.contributor.authorHirasaki, George J.
dc.contributor.authorBiswal, Sibani L.
dc.date.accessioned2018-06-27T15:44:48Z
dc.date.available2018-06-27T15:44:48Z
dc.date.issued2018
dc.description.abstractHYPOTHESIS: The adsorption of anionic surfactants onto positively charged carbonate minerals is typically high due to electrostatic interactions. By blending anionic surfactants with cationic or zwitterionic surfactants, which naturally form surfactant complexes, surfactant adsorption is expected to be influenced by a competition between surfactant complexes and surfactant-surface interactions. EXPERIMENTS: The adsorption behavior of surfactant blends known to form complexes was investigated. The surfactants probed include an anionic C15-18 internal olefin sulfonate (IOS), a zwitterionic lauryl betaine (LB), and an anionic C13-alcohol polyethylene glycol ether carboxylic acid (L38). An analytical method based on high-performance liquid chromatography evaporative light scattering detector (HPLC-ELSD) was developed to measure three individual surfactant concentrations from a blended surfactant solution. The adsorption of the individual surfactants and surfactant blends were systematically investigated on different mineral surfaces using varying brine solutions. FINDINGS: LB adsorption on calcite surfaces was found to be significantly increased when blended with IOS or L38 since it forms surfactant complexes that partition to the surface. However, the total adsorption of the LB-IOS-L38 solution on dolomite decreased from 3.09 mg/m2 to 1.97 mg/m2 when blended together compared to summing the adsorption values of individual surfactants, which highlights the importance of mixed surfactant association.
dc.identifier.citationJian, Guoqing, Puerto, Maura, Wehowsky, Anna, et al.. "Characterizing adsorption of associating surfactants on carbonates surfaces." <i>Journal of Colloid and Interface Science,</i> 513, (2018) Elsevier: 684-692. https://doi.org/10.1016/j.jcis.2017.11.041.
dc.identifier.doihttps://doi.org/10.1016/j.jcis.2017.11.041
dc.identifier.urihttps://hdl.handle.net/1911/102309
dc.language.isoeng
dc.publisherElsevier
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by Elsevier.
dc.subject.keywordAdsorption
dc.subject.keywordCarbonate
dc.subject.keywordHPLC_ELSD
dc.subject.keywordSurfactant
dc.subject.keywordSurfactant complexes
dc.titleCharacterizing adsorption of associating surfactants on carbonates surfaces
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpost-print
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