1 / 13

Catalytic Destruction of Chlorinated Solvents in Soil Vapor

Explore the catalytic destruction of chlorinated solvents in soil vapor using propane as a reductant. This study focuses on the economic efficiency and effectiveness of a Pt/Rh catalyst in converting PCE, a priority hazardous substance, to non-toxic byproducts. Experiments varied oxygen and propane concentrations, concluding that 1.5% propane can effectively eliminate 500ppm PCE at 440°C. Findings suggest propane as a cost-effective alternative to hydrogen in remediation processes.

sheldonm
Download Presentation

Catalytic Destruction of Chlorinated Solvents in Soil Vapor

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. Catalytic Destruction of Chlorinated Solvents in Soil Vapor Student: Jagoda Vojvodic Mentor: Eric Betterton University of Arizona Space Grant

  2. Superfund • Federal government’s program to clean up hazardous waste sites from a priority list of 1246 • Common contaminants: • Trichloroethylene (TCE) • Tetrachloroethylene (PCE)

  3. Priority List of Hazardous Substances

  4. Motivation • Pose risk to the human and ecological health from groundwater contamination • Current remedies with activated carbon are too expensive and do not destroy the contaminant

  5. Propane as reductant • Economic alternative to using Hydrogen in conversion of PCE • Concentrated on experiments of propane conversion under various conditions

  6. Lab Process Flow DiagramPCE + reductant + O2 CO2 + H20 + HCl

  7. Cross section of reactor

  8. Propane Conversion dataVarying amount of oxygen from 5% to 40%

  9. Varying propane concentration,oxygen concentration constant

  10. Propane effect on PCE conversion

  11. Conclusion • Can destroy the chlorinated solvents using a Pt/Rh catalyst effectively • Need 1.5% Propane to destroy 500ppm of PCE at 440 C

  12. Price Comparison At >1% Propane, we can destroy 1lb of PCE using: Propane: $5 Hydrogen: $100

  13. Acknowledgements NASA Space Grant Susan Brew Eric Betterton, Eduardo Saez, Robert Arnold, Brian Barbaris Erik Rupp, Marty Willinger, Suzanne Richards, Desiree Polson

More Related