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CREATED:20240318T194158Z
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SUMMARY:MEAM Seminar: "Surfactants\, Colloids\, and Electrolytes: Engineering Transport Phenomena for Energy and the Environment"
DESCRIPTION:Fluid flows and mass transport mediate countless natural and engineered processes\, ranging from the spreading of pollutants to carbon capture and water cleaning. In this talk\, I will share three examples of my research where fundamental ideas in transport phenomena are applied to inform technologies with direct impact on energy and the environment. First\, I will discuss surfactants\, chemicals that preferentially adsorb to interfaces between fluids and critically affect their motion. My work has revealed that these substances play a central role in the engineering of coatings aimed at reducing the drag of marine vessels\, resulting in the discovery of a physicochemical lengthscale capable of predicting the effectiveness of a given coating. I will also demonstrate how the spontaneous migration of solid particles in chemical gradients — an effect known as diffusiophoresis— can be used to filter microplastics from water without a membrane. I will present results quantifying the efficiency of this separation process\, which is a key step towards novel water remediation technologies with enhanced energy and cost efficiency. Finally\, I will describe how fluid flows\, driven solely by natural evaporation\, can dramatically boost the concentration of electrolytes in porous materials. I will illustrate the physics of this process and how it can be leveraged for the extraction of minerals key to the energy transition\, such as lithium\, from natural brines.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-surfactants-colloids-and-electrolytes-engineering-transport-phenomena-for-energy-and-the-environment/
LOCATION:Glandt Forum\, Singh Center for Nanotechnology\, 3205 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
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