Acoustic and electroacoustic spectroscopy for characterizing concentrated dispersions and emulsions

Dukhin, Andrei S.; Goetz, Philip J.

doi:10.1016/s0001-8686(00)00035-x

Cited by 162 publications

(96 citation statements)

References 54 publications

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“…The second technique is electroacoustics, which relates to the coupling between the acoustic wave and electric properties of the dispersion, by applying an electric field. Electroacoustic techniques can provide particle size information as well as zeta potential [81]. There are two different approaches depending on the different fields used to generate the driving force.…”

Section: Acoustic and Electro-acoustic Techniquesmentioning

confidence: 99%

Stability Proxies for Water-in-Oil Emulsions and Implications in Aqueous-based Enhanced Oil Recovery

2011

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Several researchers have proposed that mobility control mechanisms can positively contribute to oil recovery in the case of emulsions generated in Enhanced-Oil Recovery (EOR) operations. Chemical EOR techniques that use alkaline components or/and surfactants are known to produce undesirable emulsions that create operational problems and are difficult to break. Other water-based methods have been less studied in this sense. EOR processes such as polymer flooding and LoSal TM injection require adjustments of water chemistry, mainly by lowering the ionic strength of the solution or by decreasing hardness. The decreased ionic strength of EOR solutions can give rise to more stable water-in-oil emulsions, which are speculated to improve mobility ratio between the injectant and the displaced oil. The first step toward understanding the connection between the emulsions and EOR mechanisms is to show that EOR conditions, such as salinity and hardness requirements, among others, are conducive to stabilizing emulsions. In order to do this, adequate stability proxies are required. This paper reviews commonly used emulsion stability proxies and explains the advantages and disadvantage of methods reviewed. This paper also reviews aqueous-based EOR processes with focus on heavy oil to contextualize in-situ emulsion stabilization conditions. This context sets the basis for comparison of emulsion stability proxies.

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Section: Acoustic and Electro-acoustic Techniquesmentioning

confidence: 99%

Stability Proxies for Water-in-Oil Emulsions and Implications in Aqueous-based Enhanced Oil Recovery

2011

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“…The modern era dates from the work of Foldy (1945), Lax (1951Lax ( , 1952, Waterman and Truell (1961), and Twersky (1962). Major applications include wave propagation through suspensions (see, for example (McClements et al, 1990), (Povey, 1997), (Dukhin and Goetz, 2001), and (Spelt et al, 2001)) and through elastic composites (see (Mal and Knopoff, 1967), (Kim et al, 1995), and (Kanaun, 2000)). In this paper, we are mainly interested in twodimensional problems, motivated by the calculation of sound propagation through forests (Embleton, 1966;Price et al, 1988).…”

Section: Introductionmentioning

confidence: 99%

Multiple scattering by random configurations of circular cylinders: Second-order corrections for the effective wavenumber

Linton

Martin

2005

The Journal of the Acoustical Society of America

140

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“…These methods have been developed and modified over time and nowadays, in addition to micro electrophoresis, it is possible to investigate highly concentrated dispersions with electro-acoustic methods [8,9]. The technology of streaming potential measurements was used to develop a new titration system to determine surface charge densities: the particle charge detector [10], and the application of photon correlation spectroscopy and laser Doppler anemometry allow very easy and accurate electrophoretic investigations [11].…”

Section: Measuring Methodsmentioning

confidence: 99%

Stability of Dispersions

Bellmann¹

2004

Chem Eng & Technol

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The importance of the production and application of disperse systems in industry is steadily growing, while colloidal systems surround us every day (for example foodstuffs, pharmaceuticals etc.). Understanding the forces and mechanisms of interaction allows the development of new materials and improvement of available systems. The stability of such systems is one of the central research points. One of the well-known physical models of colloid stability is given by DLVO-Theory. With this theory we have a tool to influence the stability of such dispersion systems. In this paper, electrokinetic methods are used to investigate interaction forces in disperse systems. The influence of pH-value, electrolyte concentration and valency is shown with suitable examples. However, in some cases the DLVO-model is not satisfactory, and reasons for this behavior will also be discussed.

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Acoustic and electroacoustic spectroscopy for characterizing concentrated dispersions and emulsions

Cited by 162 publications

References 54 publications

Stability Proxies for Water-in-Oil Emulsions and Implications in Aqueous-based Enhanced Oil Recovery

Stability Proxies for Water-in-Oil Emulsions and Implications in Aqueous-based Enhanced Oil Recovery

Multiple scattering by random configurations of circular cylinders: Second-order corrections for the effective wavenumber

Stability of Dispersions

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