Contact angles and adsorption in the system quartz-water-dodecane modified by dodecyl ammonium chloride

Gaudin, A. M.; Decker, Timo

doi:10.1016/0021-9797(67)90212-3

Cited by 21 publications

(9 citation statements)

References 12 publications

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“…Interfacial tension of naphthenic acids has been studied by multiple authors [14,46]. As with organic acids, the interfacial tension of organic bases depend on pH [61]. Lord, Demond and Hayes [41] studied the interfacial tension of dodecylamine over various pH values and found that the interfacial tension first started to decrease well below the pK a of the compound.…”

Section: Interfacial Tensions Of Naphthenic Acids and Basesmentioning

confidence: 99%

Equilibrium partitioning of naphthenic acids and bases and their consequences on interfacial properties

Bertheussen

Simon

Sjöblom

2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Section: Interfacial Tensions Of Naphthenic Acids and Basesmentioning

confidence: 99%

Equilibrium partitioning of naphthenic acids and bases and their consequences on interfacial properties

Bertheussen

Simon

Sjöblom

2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…Dynamic hysteresis was determined based on the Wilhelmy plate method [18][19][20][21][22][23]. During the measurement, a membrane sample was held by the automated microbalance, then pushed into or pulled from a test liquid.…”

Section: Dynamic Hysteresismentioning

confidence: 99%

A new approach to the characterization of reverse osmosis membrane by dynamic hysteresis

Lee

Hong

2010

Desalination and Water Treatment

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A B S T R AC TPhysical aspects of dynamic hysteresis for characterizing reverse osmosis (RO) membranes have been investigated. Dynamic hysteresis was used as a parameter of showing physical surface characteristics of RO membranes. Automated microbalance was utilized to determine dynamic hysteresis based on the Wilhelmy plate method. Dynamic hysteresis determined with non-polar liquid was related to physical surface characteristics including surface roughness and heterogeneity determined by atomic force microscopy imaging and analysis. A remarkable correlation between dynamic hysteresis and surface heterogeneity was obtained when nonpolar liquid was used during the measurements. Dynamic hysteresis increased as the surface heterogeneity of RO membrane increased.

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“…= 28 • C) and was used as received. The acidity constant, K a , for dodecylamine was taken to be 10 −10.6 (Gaudin and Decker, 1967). The critical micelle concentration (CMC) of dodecylamine is reported as 1.3 × 10 −2 M at pH 6 (Ralston, 1948) and 1 × 10 −4 M at pH 11 (Watson and Manser, 1968).…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, the speciation of surface-active compounds in aqueous solution may play an important role in determining surface tension. The interfacial tension of two-liquid phase systems also demonstrates a sensitivity to pH in the presence of organic bases (Gaudin and Decker, 1967). For two-liquid systems, not only must speciation be considered, but also the partitioning of the surfactant into the nonaqueous phase (Jafvert et al, 1990;Rudin and Wasan, 1992a, b, c;Schwarzenbach et al, 1993), as the relative concentrations of surfactant in each liquid phase may also impact the interfacial properties.…”

Section: Introductionmentioning

confidence: 99%

“…With an organic base, all three mechanisms may be operating. The complexities of the relationship between speciation, partitioning and sorption, and the capillary pressure-saturation relationship of systems containing organic bases have hitherto been examined piece meal: Gaudin and Decker (1967) and Shergold (1987) have looked at the impact of dodecylamine on interfacial tension or the contact angles, whereas Powers and Tamblin (1995) focused on the impact of dodecylamine on capillary pressure. Hence, this study seeks to elucidate both the effect of pH on the interfacial tension and contact angle, and its accompanying impact on the capillary pressure-saturation relationship, emphasizing the roles of speciation, partitioning, and sorption.…”

Section: Introductionmentioning

confidence: 99%

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Lord

Demond

Hayes

2000

Transport in Porous Media

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The presence of surfactants may have profound effects on the transport of organic contaminants in multiphase systems. It is a common practice, however, to model the subsurface migration of liquids independently of the aqueous phase composition. As such, transport in these systems may not be adequately characterized. This study investigates the impact of pH on interfacial tension, wettability, and the drainage capillary pressure-saturation relationship in air-water-quartz and o-xylenewater-quartz systems containing dodecylamine, an organic base. In these systems, three mechanisms, speciation, partitioning, and sorption, are important in determining the interfacial tension and contact angle, and consequently, important in determining the capillary pressure. By adjusting the pH above and below, the pK a of the base, the relative importance of these mechanisms was altered. Below dodecylamine's pK a of 10.6, the base was primarily in a cationic form resulting in minimal partitioning into the nonaqueous liquid and greater sorption at the quartz surface. Above the pK a , the base was primarily in a neutral form which did not sorb to the quartz, and, furthermore, partitioned into the organic liquid phase where its surface activity was minimized. The combination of these processes caused the capillary pressure to change in a manner consistent with pore-scale theory of capillarity. The utility in this approach lies in the possibility of predicting transport properties in multiphase systems while incorporating the direct effects of solution chemistry.

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Contact angles and adsorption in the system quartz-water-dodecane modified by dodecyl ammonium chloride

Cited by 21 publications

References 12 publications

Equilibrium partitioning of naphthenic acids and bases and their consequences on interfacial properties

Equilibrium partitioning of naphthenic acids and bases and their consequences on interfacial properties

A new approach to the characterization of reverse osmosis membrane by dynamic hysteresis

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