1 / 1

CME IEET 21 Darnault

Fate and Transport of Fullerenes and Single-Wall Carbon Nanotubes (SWNT) in Unsaturated and Saturated Porous Media.

inara
Download Presentation

CME IEET 21 Darnault

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Fate and Transport of Fullerenes and Single-Wall Carbon Nanotubes (SWNT) in Unsaturated and Saturated Porous Media Itzel G Godinez, UIC, Department of Civil and Materials Engineering; Christophe Darnault, UIC, Department of Civil and Materials Engineering Primary Grant Support: National Science Foundation Bridge to the Doctorate Fellowship at the University of Illinois at Chicago • Generation of scientific data to explain the fate and transport of nanomaterials in subsurface environment • Development of non-intrusive, high-spatial and temporal techniques to describe transport and measure concentrations of fullerenes and SWNTs in porous media • Assessment of the extend in which fullerenes and SWNTs are transported in the vadose zone through preferential flow • Establishment of the impact of wetting and drying cycles on the transport of nanomaterials by characterizing the role of gas-liquid interface regions and reconstructing the soil column’s three-dimensional structure • Development of a pore-scale visualization method by adapting existing models and techniques to investigate the mechanisms controlling nanomaterials retention and immobilization in unsaturated porous media (e.g. air-water and air-water-soil interfaces) • Implementation of segmented soil columns to assess the transport of fullerenes and SWNTs in unsaturated conditions • Concentration of nanomaterials in column’s effluent will be analyzed by UV-vis spectrophotometer • Three-dimensional reconstruction of the columns will be accomplished through the Advanced Photon Source Hard-Ray Microbe from Argonne National Laboratory • Pore-scale visualization technique will consist of an infiltration chamber, mounting assembly, light source, electronic equipment (e.g. camera, lens and computer system), and imaging software • Development of techniques to visualize and describe the fate and transport of fullerenes and SWNTs in the vadose zone by preferential flow according to the following characteristics: • Non-intrusive, high-spatial and temporal methods • Use of preferential flow (e.g. fingering and gravitational flow) • Reconstruction of 3-D columns • Development of a real-time pore-scale visualization method • Acquiring data (e.g. nanomaterial concentration, soil moisture, velocity, distribution of nanoparticles, etc.) to explain the behavior of nanomaterials in porous media under different conditions

More Related