| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Mugele, Frieder
University of Twente
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2023Elastometry of Complex Fluid Pendant Capsulescitations
- 2022Formation and stability of heterogeneous organo-ionic surface layers on geological carbonatescitations
- 2020Electrochemically Induced Changes in TiO2 and Carbon Films Studied with QCM-Dcitations
- 2019A method for reversible control over nano-roughness of colloidal particlescitations
- 2017Mechanical History Dependence in Carbon Black Suspensions for Flow Batteriescitations
- 2017Influence of electrochemical cycling on the rheo-impedance of anolytes for Li-based Semi Solid Flow Batteriescitations
- 2014Charge Control And Wettability Alteration At Solid-liquid Interfacescitations
- 2007Volume phase transition of "smart" microgels in bulk solution and adsorbed at an interface: A combined AFM, dynamic light, and small angle neutron scattering studycitations
Places of action
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document
Charge Control And Wettability Alteration At Solid-liquid Interfaces
Abstract
Most solid surfaces acquire a finite surface charge upon exposure to aqueous environments due to desorption and/or adsorption of ionic species. The resulting electrostatic forces play a crucial role in many fields of science, including colloidal stability, self-assembly, wetting, and biophysics as well as technology. Enhanced oil recovery is an example of a large scale industrial process that hinges in many respects on these phenomena.In this paper, we present a series of experiments illustrating fundamental aspects of low salinity water flooding in well-defined model systems. We show how pH and ion content of the water phase as well as the presence of model polar components (fatty acids) in the oil phase affect the wettability (i.e. contact angle distribution) of oil-water-rock systems. Specifically, we discuss high resolution atomic force microscopy (AFM) experiments demonstrating the preferential adsorption ofmultivalent cations to mineral surfaces such as mica and gibbsite. Cation adsorption leads to increased and in some cases reversed surface charge at thesolid-liquid interface. In the case of charge reversal, the adsorption processcan trigger a wetting transition from complete water wetting in ambient oil (i.e. zero water contact angle) in the absence to partial wetting in the presence of divalent cations. While already dramatic for pure alkanes as baseoil, adding fatty acids to the oil phase enhances the effect of divalent ions on the oil-water-rock wettability even more. In this case, contact angle variations of more than 70° can be observed as a function of the saltconcentration. This enhancement is caused by the deposition of a thin film of fatty acid on the solid surface. AFM as well as surface plasmon resonance spectroscopy measurement in a microfluidic continuous flow cell directly demonstrate that adsorbed Ca ions promote secondary adsorption of acidic components from the oil phase.The combination of the effects discussed provides a rational scenario explaining many aspects of the success of low salinity water flooding.