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- Title
- Geological Lab-on-a-Chip for Salt Precipitation in Deep Saline Aquifers.
- Creator
- Crawford, Heather, Asfour, Chris, Seo, Seokju, Kim, Mike, Office of Undergraduate Research and Inquiry
- Abstract/Description
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Geologic storage of carbon dioxide (CO2) into deep saline aquifers is a promising strategy for mitigation of global atmospheric CO2 levels-a main cause of climate change. These aquifers have the capacity to safely store significant amounts of CO2 and are available worldwide. As such, reaction dynamics and multiphase transport accompanying CO2 injection in deep aquifers are important to understanding CO2 sequestration processes and therefore they have been extensively studied. Despite the...
Show moreGeologic storage of carbon dioxide (CO2) into deep saline aquifers is a promising strategy for mitigation of global atmospheric CO2 levels-a main cause of climate change. These aquifers have the capacity to safely store significant amounts of CO2 and are available worldwide. As such, reaction dynamics and multiphase transport accompanying CO2 injection in deep aquifers are important to understanding CO2 sequestration processes and therefore they have been extensively studied. Despite the comprehensive findings, there are still urgent needs for understanding of interactions between injected CO2 and resident fluids since these interactions could determine the total CO2 storage rate and capacity. The objective of this study is to investigate fundamental physics of water evaporation at different salinities under the CO2-rich environment. Microfluidic techniques visualize and quantify evaporation behavior of water in real-time in a simple 1D microchannel geometry. The detailed CO2-water interactions and underlying physics will be discussed.
Show less - Date Issued
- 2017
- PURL
- http://purl.flvc.org/fau/fd/FA00005619
- Subject Headings
- College students --Research --United States.
- Format
- Document (PDF)
- Title
- Chemical-Assisted Recovery of Heavy Oil.
- Creator
- Linares, Natalia, Seo, Seokju, Kim, Mike, Office of Undergraduate Research and Inquiry
- Abstract/Description
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More than 1 trillion barrels of oil deposited worldwide is heavy oil and natural bitumen. Due to their high viscosity and high density, extraction efficiency of heavy oil and bitumen from natural reservoirs is known to be less than 5% with the conventional primary recovery methods. To increase their recovery efficiency, a technique, known as enhanced oil recovery, has been developed using nanoparticles, surfactant, dispersant, and polymers. Among these materials, surfactants and dispersants...
Show moreMore than 1 trillion barrels of oil deposited worldwide is heavy oil and natural bitumen. Due to their high viscosity and high density, extraction efficiency of heavy oil and bitumen from natural reservoirs is known to be less than 5% with the conventional primary recovery methods. To increase their recovery efficiency, a technique, known as enhanced oil recovery, has been developed using nanoparticles, surfactant, dispersant, and polymers. Among these materials, surfactants and dispersants lower interfacial tension between oil and the resident fluid; therefore enhance mobilization of oil. The objective of this project is to further improve the recovery efficiency of heavy oil by a combined effect of surfactant and dispersant. When the mixture of surfactant and dispersant in an aqueous solution is injected to oil-rich porous media, microfluidic visualization techniques will be employed to investigate the overall recovery rate. The possibility and effectiveness of the proposed idea will be discussed.
Show less - Date Issued
- 2017
- PURL
- http://purl.flvc.org/fau/fd/FA00005626
- Subject Headings
- College students --Research --United States.
- Format
- Document (PDF)
- Title
- Fundamental Physics of All-Aqueous Micro-Droplet Generation Mechanisms.
- Creator
- Melgar Jimenez, Sofia, Petrozzi, Nick, Mastiani, Mohammad, Kim, Mike, Office of Undergraduate Research and Inquiry
- Abstract/Description
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Aqueous microdroplets have shown great potential in various applications such as material synthesis, chemical reactions, and drug discovery. The objective of this research is to generate aqueous microdroplets in water using microfluidic techniques. Compared to conventional aqueous droplets in an oil phase, droplets generated from the proposed system will be more biocompatible and simply manufactured. To achieve this goal, the research focuses on understanding fundamental physics behind...
Show moreAqueous microdroplets have shown great potential in various applications such as material synthesis, chemical reactions, and drug discovery. The objective of this research is to generate aqueous microdroplets in water using microfluidic techniques. Compared to conventional aqueous droplets in an oil phase, droplets generated from the proposed system will be more biocompatible and simply manufactured. To achieve this goal, the research focuses on understanding fundamental physics behind droplet generation at various geometries and input conditions. This understanding can subsequently help us obtain microdroplets with targeted properties. Several microdroplet generators made of polydimethylsiloxane (PDMS) transparent polymer are fabricated and an aqueous two-phase system (ATPS) made up of two water-based polymers, polyethylene glycol (PEG) and dextran (DEX) is used in these generators. The results successfully demonstrate that the proposed droplet generators produce aqueous microdroplets at various sizes at different frequencies. The controllability and tunability of the properties of microdroplets will be discussed.
Show less - Date Issued
- 2017
- PURL
- http://purl.flvc.org/fau/fd/FA00005629
- Subject Headings
- College students --Research --United States.
- Format
- Document (PDF)