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dc.contributor.authorJha, N.
dc.contributor.authorIglauer, Stefan
dc.contributor.authorSangwai, J.
dc.date.accessioned2018-12-13T09:11:43Z
dc.date.available2018-12-13T09:11:43Z
dc.date.created2018-12-12T02:46:50Z
dc.date.issued2018
dc.identifier.citationJha, N. and Iglauer, S. and Sangwai, J. 2018. Effect of Monovalent and Divalent Salts on the Interfacial Tension of n-Heptane against Aqueous Anionic Surfactant Solutions. Journal of Chemical & Engineering Data. 63 (7): pp. 2341-2350.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/71903
dc.identifier.doi10.1021/acs.jced.7b00640
dc.description.abstract

© 2017 American Chemical Society. A very low interfacial tension, γ, can be achieved between an oil phase and an aqueous solution containing anionic surfactant and salt at a very low concentration. This phenomenon can have potential applications in recovering residual oil from the reservoir through low salinity-low surfactant enhanced oil recovery flooding. Measurements of γ between n-heptane and aqueous solution of anionic surfactants in the concentration range of 0.141-2.167 mM and salts in the concentration range of 9.010-119.780 mM at 313.15 ± 0.1 K have been carried out. The experimental results show that the value of γ falls to a lowest value at a temperature above the Krafft point when the concentration of anionic surfactants [sodium dodecyl sulfate (SDS) and dioctyl sulfosuccinate sodium salt (AOT)] is increased up to a maximum surface excess concentration in an aqueous solution in the presence of monovalent [sodium chloride, (NaCl)] and divalent [calcium chloride, (CaCl2)] salts in the low concentration range. To understand and adequately capture the reduction of γ in such systems with n-heptane as an oil phase, a simplistic model is being proposed here. This model is an extension of the Petersen and Saykally model which was earlier developed to capture the Jones-Ray effect.

dc.publisherAmerican Chemical Society
dc.titleEffect of Monovalent and Divalent Salts on the Interfacial Tension of n-Heptane against Aqueous Anionic Surfactant Solutions
dc.typeJournal Article
dcterms.source.volume63
dcterms.source.number7
dcterms.source.startPage2341
dcterms.source.endPage2350
dcterms.source.issn0021-9568
dcterms.source.titleJournal of Chemical & Engineering Data
curtin.departmentWASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
curtin.accessStatusFulltext not available


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