ArticleEnergy & fuels : an American Chemical Society journal2026
Viscoelastic Properties of Produced Water Emulsions.
Article in Energy & fuels : an American Chemical Society journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Understanding viscoelastic properties of fluid interfaces leads to improved oil-water separation strategies. This study provides interfacial tension and dilatational viscoelasticity data for cyclohexane in contact with synthetic produced water (PW) or DI water containing the anionic surfactant sodium dodecyl sulfate (SDS). Pendant drop tensiometry with oscillatory dilatational rheology was applied over SDS concentrations of 0.001-1 g/L and frequencies of 0.1-0.5 Hz. The PW-cyclohexane system exhibited interfacial tension (44.4 ± 0.32 mN/m) lower than that of the corresponding DI water-cyclohexane interface (47.9 ± 1.26). The apparent critical micelle concentration (CMC) at the PW-cyclohexane interface (∼0.1 g/L) was more than an order of magnitude lower than in DI water-cyclohexane (∼1.94 g/L), reflecting the strong influence of dissolved ions on surfactant adsorption. Interfacial dilatational measurements showed a clear maximum in the complex modulus |
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