Analysis contact angle for carbon storage application?
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Contact angle analysis is important for carbon storage applications. The contact angle can be measured using techniques such as wetting with water droplets . Molecular dynamics simulations can also be used to estimate the contact angle of a water droplet on a silica surface in a carbon dioxide atmosphere . Pore geometry has been found to influence the contact angle, and the size of droplets relative to pore size can also affect the contact angle . Contact angle measurements on non-flat surfaces can be challenging, but micro-CT scans have been used to visually measure contact angles and determine how samples behave under different conditions . The contact angle of CO2/brine/mineral systems can be influenced by factors such as pressure, pH, CO2 density, and interfacial tension .
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| The paper discusses the importance of accurate contact angle measurements for understanding multiphase behavior and storage efficiency in Geologic Carbon Storage (GCS) reservoirs. It mentions that contact angle measurements on non-flat surfaces are challenging and not traditionally obtained. The paper also mentions ongoing tests at the U.S. Department of Energy National Energy Technology Laboratory (NETL) to visually measure contact angles using micro-CT scans. However, the specific analysis of contact angles for carbon storage applications is not mentioned in the paper. | |
| The paper discusses a method using spheroidal geometric constructions to estimate the contact angle of a water droplet on a silica surface in a carbon dioxide atmosphere. The proposed method can be used to increase confidence in contact angle estimations for carbon storage applications. | |
| The paper analyzes the contact angle of glassy carbon coatings on graphite samples stored in different conditions, including one sample mounted outside the International Space Station. | |
17 Citations | The paper discusses the influence of pore geometry on contact angle measurements using sessile drop and micro-CT methods. It does not specifically analyze contact angles for carbon storage applications. |
Related Questions
What is formula for standard deviation for contact angle measurement?4 answersThe formula for standard deviation in contact angle measurements varies depending on the method used. For contact angles obtained from the Wilhelmy tensiometer, the uncertainty can be analyzed using standard error propagation techniques involving partial derivatives, with uncertainties in force, sample perimeter, and liquid surface tension contributing to the overall uncertainty. When measuring contact angles from sessile drops using the tangent method, the uncertainty estimation involves partial derivatives as well, with smaller uncertainties for contact angles <60° compared to angles approaching 90°. Additionally, a method utilizing confocal techniques for aerial acquisition of wetting contact angles of sessile drops provides a repeatability typically less than 0.25°, with an instrument uncertainty budget predicting a combined uncertainty of 0.91° for a 1 mm diameter water droplet with a contact angle of 110°.
Is the contact angle a measure of wettability on a hydrophobic porous surface?5 answersThe contact angle is a measure of wettability on a hydrophobic porous surface. It is an important index for evaluating the hydrophobicity of a solid surface. The contact angle is inversely proportional to the droplet-solid contact radius and contact area, and directly proportional to the projected area of the droplet. Different methods have been proposed to measure the contact angle, including the sessile drop method and 3D μCT scanning. The contact angle can also be determined using high-resolution images and alternative approaches that provide an averaged assessment of wettability. The contact angle on a hydrophobic porous surface can be influenced by factors such as surface structure, water penetration into the film, and the presence of hydrophilic and hydrophobic domains. Overall, the contact angle is a useful measure for characterizing wettability on hydrophobic porous surfaces and understanding the wetting behavior of fluids in porous media.
What is the water angle contact of fully suspended graphene?4 answersThe water contact angle of fully suspended graphene is 42° ± 3°.
There are relationship of liquid droplet height and contact angle?5 answersThe contact angle of a liquid droplet is dependent on the droplet height and the way the contact angle is defined. Different contact angle definitions can even lead to opposite dependencies of the contact angle on the droplet height. The efficiency of herbicide control on weed species can be dependent on the contact angle of the herbicide solution droplets on the leaf surface. The association of herbicide and adjuvants can reduce the contact angle on the surfaces, resulting in a higher percentage of plant intoxication. A method for measuring the contact angle of a liquid droplet involves determining the maximum width and height of the droplet contour line and establishing a coordinate system to determine whether the droplet is in a hydrophilic or hydrophobic state. Contact angle hysteresis, which is essential for various applications, is caused by the nanoscopic structure of surfaces. Quincke's relation provides an alternative to direct measurement of contact angle and can be validated experimentally.
There are relationship of pressure and wetting angle?3 answersThe relationship between pressure and wetting angle has been studied in several papers. Léger et al. investigated the influence of wetting on pressure infiltration and found that changes in contact angle caused the saturation/pressure curves to shift. Baver et al. used rectangular capillary tubes to study dynamic contact angles in the presence of gravity and found that the Hoffman relationship between dynamic contact angle and water velocity applies to gravity-affected flow fields. Ahmed et al. compared the role of drop pinch-off and resultant dynamic wetting pressure in contact angle measurements and highlighted the importance of a well-controlled drop deposition to guarantee accurate data. Schlangen et al. derived thermodynamic relationships between vapour adsorption and wetting and used the spreading tension and contact angle to predict wettability in a liquid-liquid-solid system. Overall, these studies provide insights into the relationship between pressure, wetting angle, and contact angle measurements.
What is the relationship between contact angle and pressure?5 answersThe contact angle is influenced by pressure. An increase in pressure generally leads to an increase in the contact angle. In physical chemistry of surfaces, it has been observed that an increase in hydrostatic pressure causes an increase in the contact angle on the three-phase contact line. This relationship between contact angle and pressure has been experimentally confirmed in systems where thermodynamic equilibrium is reached. The contact angle-pressure relationship is also affected by the chemical properties of the materials involved. The contact angle can be observed to vary within a range by changing the pressure at the three-phase line. The dependence of the contact angle on pressure provides a possible explanation for contact angle hysteresis. Overall, the contact angle and pressure are interconnected in determining the behavior of liquid-vapor interfaces on solid surfaces.