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RESEARCH PROJECTS

DISSOLUTION MASS TRANSFER OF CAPILLARY TRAPPING

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3D tomographic imaging of capillary trapping dissolution process

Dissolution mass transfer of capillary trapping occurs in various hydro-geology applications, such as groundwater contamination, groundwater in-situ decontamination, and geological carbon sequestration. In this process, a fluid, which can be liquid, gas, or supercritical state, is trapped and immobilized in porous media. Then, another fluid, usually water, passes by, inducing dissolution mass transfer from the capillary trapping to the flowing phase. The rate of dissolution mass transfer is important in assessing the degree of groundwater contamination, the effectiveness of nutrient transport in groundwater remediation, and dissolution trapping in geological carbon sequestration.

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7. Patmonoaji, A.*, Tahta, M.A., Tuasikal, J.A., She, Y., Hu, Y., Suekane, T. Dissolution mass transfer of trapped gases in porous media: A correlation of Sherwood, Reynolds, and Schmidt numbers, International Journal of Heat and Mass Transfer, 205, 123860, 2023.

6. Patmonoaji, A.*, Hu, Y., Nasir, M., Zhang, C., Suekane, T. Effects of Dissolution Fingering on Mass Transfer Rate in Three-Dimensional Porous Media, Water Resources Research, 57, 10, 2021.

5. Patmonoaji, A.*, Nasir, M., Mahardika, M.A., She, Y., Suekane, T. A unique dissolution behavior of trapped CO2 into flowing water inside a porous medium compared with other gases, Journal of the Mining and Materials Processing Institute of Japan, 137 (9), 91–97 2021.

4. Patmonoaji, A.*, Hu, Y., Zhang, C. & Suekane, T. Dissolution mass transfer of trapped phase in porous media. Book chapter in: Porous Fluids - Advances in Fluid Flow and Transport phenomena in Porous Media, IntechOpen, 2021.

3. Hu, Y., Zhang, C., Patmonoaji, A.*, She, Y., Matsushita, S., Suekane, T. Pore-scale investigation of wettability impact on residual nonaqueous phase liquid dissolution in natural porous media. Science of the Total Environment, 787, 147406, 2021.

2. Hu, Y., Patmonoaji, A.*, Xu, H., Kaito, K., Matsushita, S., Suekane, T. Pore-scale investigation on nonaqueous phase liquid dissolution and mass transfer in 2D and 3D porous media. International Journal of Heat and Mass Transfer, 167, 120901, 2021.

1. Patmonoaji, A.* & Suekane, T. Investigation of CO2 dissolution via mass transfer inside a porous medium. Advances in Water Resources, 110, 97–106, 2017.

CAPILLARY TRAPPING CHARACTERIZATION

After fluid displacement in porous media (either imbibition or drainage), some displaced fluid remains in the porous media in the form of capillary trapping, which is difficult to be displaced. In the application of groundwater contamination, this capillary trapping will become the prolonged contamination source, whereas in petroleum, it is necessary to push out this capillary trapping through enhanced oil recovery for petroleum production. Therefore, characterizing this capillary trapping is important in designing appropriate technique for the applications.

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3D tomographic imaging of (left) capillary trapping and (right) identified clusters

POROUS MEDIA CHARACTERIZATION

In porous media, porous medium characteristics influence various flow processes. In the case of a single fluid flow, its characteristics define the permeability and tortuosity. For multiphase flow, its characteristics affect capillary trapping, and since capillary trapping mainly occurs inside the pores, the size and shape of the pores determine them. These characteristics define the stability of the trapped phase and its exposure to the surrounding fluid. Stability governs the capillary trapping displacement, and exposure influences the mass transfer of the capillary trapping.

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REACTIVE FLOW

There are various methods of to control displacement efficiency. One of the most promising method is reactive flow, which is the combination between chemical reaction of fluid displacement. The chemical reaction can be designed to generate surfactant, gel, or viscosity enhancing properties. Therefore, by carefully designed the reaction, the displacement sweep efficiency can be controlled.

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Improving contaminant sweeping by using polymer with chemical reaction

MULTIPHASE FLOW MEASUREMENT IN PIPE

Multi-phase flow in pipe occurs in various applications, such as chemical industries, nuclear reactors safety measure, and fluid transport in piping. One of the challenging problem is the measurement of multi-phase flow in pipe because of the opaqueness of the pipe and the requirement for high temporal and spatial resolutions.

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Saline water mixing energy conversion

A huge amount of energy is spontaneously released upon mixing fresh and saline waters. About 2 kJ of energy is released by mixing a controlled volume of 1 L of fresh water with an equal amount of seawater. It is estimated that an amount of 2 TW of power can be generated throughout the world from this energy source. Capacitive energy extraction based on double-layer expansion (CDLE), which is based on the formation of electric double layer (EDL). These methods are used to effectively generate electrical energy from the mixing solution, which are based on the change of electrical properties of electrode electrolyte interface owing to salinity difference.

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