Interfacial activity of dinonylnaphthalene sulphonic acid in the presence of modifiers possessing an hydroxyl group

Szymanowski, J.; Blondet, I.; Cote, Gérard; Bauer, D.; Sabot, J.L.

doi:10.1016/0304-386x(92)90034-w

Cited by 19 publications

(2 citation statements)

References 23 publications

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“…It is not clear whether this effect is to be attributed primarily to a decrease in the interfacial tension or to a fluidification of the extractant film; maybe both effects act simultaneously. In addition one can find alternative explanations in relation to specific effects of modifiers, which have been well documented (55,(60)(61)(62), such as their ability to give coassociation with extractant molecules or to coadsorb at the interface. If the addition of long-chain alcohols more or less inhibits the interfacial adsorption of extractant molecules, this will be expected to decrease the rate of metal extraction if the extractant is rejected in the organic phase, but the reverse may be true if it is rejected in the aqueous phase.…”

Section: Factors Influencing Distribution Coefficients and Favoring Imentioning

confidence: 97%

Rate of Interfacial Reactions Compared to Bulk Reactions in Liquid–Liquid and Micellar Processes: An Attempt to Clarify a Confusing Situation

Tondre¹,

Hébrant²,

Watarai

2001

Journal of Colloid and Interface Science

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Section: Factors Influencing Distribution Coefficients and Favoring Imentioning

confidence: 97%

Rate of Interfacial Reactions Compared to Bulk Reactions in Liquid–Liquid and Micellar Processes: An Attempt to Clarify a Confusing Situation

Tondre¹,

Hébrant²,

Watarai

2001

Journal of Colloid and Interface Science

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“…105 Szymanowski and coworkers found that the interfacial activity of dinonylnaphthalene sulfonic acid (HDNNS) decreased with the addition of isodecanol or p-nonylphenol. 106 The addition of wetting agents to pregnant leach liquors was found to aid in reducing the 'problem of crud formation and control in solvent extraction plants. 107 Bart and coworkers developed a model to describe osmosis in the liquid membrane technique.…”

Section: Solvent Extraction and Liquid Membranesmentioning

confidence: 99%

Aqueous processing of minerals, metals, and materials

Doyle

Duyvesteyn

1993

JOM

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Authors' Note: This article reviews research published or presented in 1991 and 1992 that we feel is likely to be of interest to those involved in hydrometallurgy and the aqueous processing of materials and industrial minerals. It is beyond the scope of such a review to discuss any of the contributions comprehensively or critically. Instead, we hope that the reader will use this compilation of recent research as an information sourceiand learn more about work that heor she is interested in from the references given here. GENERAL SYMPOSIATwo international symposia held in 1992 covered a comprehensive range of hydrometallurgical research. The Ernest Peters International Symposium on Hydrometallurgy, Theory and Practice, had sessions on leaching of ores and concentrates, hydrometallurgical deSign, simulation and process control, hydrometallurgical process innovation, hydrometallurgy and the environment, hydrometallurgy and precious metals recovery, and solution purification. 1 The Second International Conference on Hydrometallurgy, held in Changsha, China, included ten plenary lectures with an emphasis on Chinese hydrometallurgy, but speakers also addressed aspects of heap leaching, integrated waste management, solvent extraction, and the use of liquid membranes for effluent treatment. The plenary lectures were followed by sessions on general hydrometallurgy (27 papers), leaching (37 papers), precious metals (29 papers), purification and separation (59 papers), and environmental problems (26 papers).2 PHYSICAL CHEMISTRY OF AQUEOUS SYSTEMSThe power of thermodynamic analysis for understanding the behavior of aqueous systems has long been recognized. Over the last few years, however, computational techniques have greatly facilitated such analyses. A recent example is the construction of multicomponent Eh-pH diagrams, using generalized species. 3 However, the computations are only as good as the data that are used as inputto models. Duffield and coworkers discussed the critical appraisal of thermodynamic data for use with computer-based chemical speciation models, the problems associated with selecting formation/ dissolution constants for solids, and the interpretation of c0l!lputed results.+-;;For many systems there is still an urgent need for good thermodynamic data, 46 and recent contributions in this area are particularlywekome. Indu and coworkers developed a scale characterizing the acidity of solutions containing H 2 SO 4 and Na 2 SO/ The activities and osmotic coefficients of various alkali and alkalineearth halide solutions were calculated from vapor pressure measurements,8 freezing pOint data (using a two-parameter equation of the Huckel type),9

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Influence of isooctanol on the interfacial activity and mass transfer of ytterbium(III) using 2‐ethylhexylphosphonic acid mono‐2‐ethylhexyl ester as an acidic extractant

Wang

et al. 2008

J of Chemical Tech & Biotech

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BACKGROUND: Introducing an adduct into an extractant system is an effective method of improving extraction performance. The effect of additives upon extraction is very important, especially in the case of interfacial behaviour. In most work published in the literature, there is little data on the interfacial behaviour of extractants and modifiers. As the mass transfer must pass through an interface, the influence of isooctanol on the interfacial activity and mass transfer of ytterbium(III) using 2-ethylhexylphosphonic acid mono-2-ethlhexyl ester has been investigated.

show abstract

Interfacial activity of dinonylnaphthalene sulphonic acid in the presence of modifiers possessing an hydroxyl group

Cited by 19 publications

References 23 publications

Rate of Interfacial Reactions Compared to Bulk Reactions in Liquid–Liquid and Micellar Processes: An Attempt to Clarify a Confusing Situation

Rate of Interfacial Reactions Compared to Bulk Reactions in Liquid–Liquid and Micellar Processes: An Attempt to Clarify a Confusing Situation

Aqueous processing of minerals, metals, and materials

Influence of isooctanol on the interfacial activity and mass transfer of ytterbium(III) using 2‐ethylhexylphosphonic acid mono‐2‐ethylhexyl ester as an acidic extractant

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