Dr. Youneng Tang Colloquium
“Using Microfluidics to Study the Interaction of Microorganisms and Flow in Porous Media”
Dr. Youneng Tang
Department of Civil & Environmental Engineering FAMU-FSU College of Engineering
Tuesday, October 4, 2016 at 1:00PM
Melvin Stern Seminar Room
Room 18 Keen Bldg.
Refreshments will be served at 12:45PM
Microfluidic flow cells containing porous media were used to study the interaction among flow, microorganisms, and chemicals in the subsurface environment. The interaction at the scale of micrometers to centimeters was imaged using a variety of microscopes equipped with cameras. The interaction mechanisms were investigated through transport and reaction models at different spatial scales. Two projects that were studied by experimentation and mathematical modeling will be presented, including:
1) Groundwater Bio-Remediation: Microbes removed a contaminant (selenite) from groundwater by converting the contaminant to nanoparticles (elemental selenium).
2) Microbial Enhanced Oil Recovery: One common problem in microbial enhanced oil recovery is bio-souring, which refers to hydrogen sulfide production due to microbial sulfate reduction during oil recovery. Hydrogen sulfide causes health issues and increases the cost for oil processing. Perchlorate was used to inhibit hydrogen sulfide production. A multiphase and multiscale flow model is proposed for future research. Read More