Simple test of dispersant effectiveness based on interfacial tension measurements

Rewick, Robert T.; Gates, J.; Smith, James H.

doi:10.1016/0016-2361(80)90146-5

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…The weight of the oil drop at detachment is determined largely by the interfacial tension between the water and the oil (Rewick et al, 1982). We have shown that the drop weight measured as a function of dispersant concentration changes abruptly around the cmc and that dispersants with low erne's exhibit good dispersant properties (Rewick et al, 1980).…”

Section: Introductionmentioning

confidence: 91%

“…We previously reported two simple tests of dispersant effectiveness based on interfacial tension measurements (Rewick et al, 1980(Rewick et al, , 1981(Rewick et al, , 1982: the du Nouy ring and the drop-weight methods. We used the du Nouy ring method to correlate the critical micelle concentration (cmc) of several commercial oil dispersant products with their effectiveness in dispersing no.…”

Section: Introductionmentioning

confidence: 99%

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The drop-weight interfacial tension method for predicting dispersant performance

Rewick

Sabo

Smith

1983

Ind. Eng. Chem. Prod. Res. Dev.

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The drop-weight test is an improved interfacial tension method for predicting the relative effectiveness of oil-spill dispersant products. The test is based on the relationship between the weight of a drop of oil detached from a capillary beneath a dispersant-in-seawater solution and the lowering of the interfacial tension between oil and water. A modified test procedure, based on measuring the time for a drop detachment rather than the weight, significantly reduces the test time and simplifies the apparatus. Another modification permits the determination of relative diffusion rates of dispersants through an oil column. Seventeen water-based dispersant products were evaluated with light Arabian crude oil and, in some cases, with no. 6 fuel oil using the modified procedures. The results were interpreted in terms of data reliability and compared with information obtained by the Standard EPA Dispersant Effectiveness Test (the EPA test) (McCarthy et al., 1973).

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Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

The drop-weight interfacial tension method for predicting dispersant performance

Rewick

Sabo

Smith

1983

Ind. Eng. Chem. Prod. Res. Dev.

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“…First is measurement of oil-water interfacial tension in the presence of the surfactant under steady or unsteady state conditions. This test, which has been developed by Rewick et al (1980Rewick et al ( , 1981 and is referred to as the "SRI test" provides fundamental physical chemical data on the interfacial tension reducing capability of the surfactant per unit volume of dispersant. It may identify performance differences bctwccn oils and tests can be done easily with varying tempcrature and water salinity.…”

mentioning

confidence: 99%

Interfacial tensions of oil, water, chemical dispersant systems

Mackay

Hossain

1982

Can J Chem Eng

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Oil‐water interfacial tension measurements are reported for systems of crude oils, distilled and salt water, and chemical dispersants, using the spinning drop technique. By varying the amount of dispersant and the volumetric ratio of water to oil it is possible to deduce an effective oil‐water partition coefficient for the interfacial tension reducing species and to suggest a relationship between the extent of interfacial tension reduction and dispersant concentration. The implications of the results in assessing the mechanism and effectiveness of the chemical dispersion process are discussed.

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Development, formulation and optimization of a novel biocompatible ionic liquids dispersant for the effective oil spill remediation

et al. 2020

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Simple test of dispersant effectiveness based on interfacial tension measurements

Cited by 6 publications

References 3 publications

The drop-weight interfacial tension method for predicting dispersant performance

The drop-weight interfacial tension method for predicting dispersant performance

Interfacial tensions of oil, water, chemical dispersant systems

Development, formulation and optimization of a novel biocompatible ionic liquids dispersant for the effective oil spill remediation

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