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Modeling the Temporal and Size-Distributions of Diesel Particulate Matter

Modeling the Temporal and Size-Distributions of Diesel Particulate Matter. Darrell Sonntag PhD Candidate Civil and Environmental Engineering Cornell University. Particulate Matter (PM). Diesel particulate matter Complex mixture of organic and inorganic compounds Both solid an liquid phase.

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Modeling the Temporal and Size-Distributions of Diesel Particulate Matter

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  1. Modeling the Temporal and Size-Distributions of Diesel Particulate Matter Darrell Sonntag PhD Candidate Civil and Environmental Engineering Cornell University

  2. Particulate Matter (PM) • Diesel particulate matter • Complex mixture of organic and inorganic compounds • Both solid an liquid phase Platinum Metals Review

  3. PM Health Effects • NYS and NYC ranked highest in the nation in terms of health impacts from diesel fine particles (Clean Air Task Force) • Due to less PM pollution, US urban dwellers live 5 months longer in 2000 compared to 1980 (Pope et al. 2009) Diesel Soot Impacts Across U.S. Source:http://www.catf.us/projects/diesel/dieselhealth/

  4. Particle Size Inhaled medical aerosols Reference: http://www.seas.harvard.edu/projects/weitzlab/jeanresearch/PulmonaryDrugDelivery.html

  5. September 11th Research Project • Evaluate vehicle emissions according to the particle size-distribution • Develop statistical models to understand factors that influence particle emissions

  6. Particle Number Size-Distribution Diameter of human hair = 70,000 nanometers

  7. How do particle emissions behave through a typical bus route?

  8. On-going Research • Alternative fueled-vehicles • Gasoline vs. Ethanol (E85) blends • Biodiesel vs. Straight Vegetable Oil • What is the effect of these fuels on particle size-distributions?

  9. Fuel Effects on Particle-Size Distribution • 2008 “Flex-Fuel” Chevy Impala • E85 (Ethanol-gasoline fuel blend)

  10. Modeling particle-size distributions • What is the effect of engine load on emissions? β1(d) - Gasoline - E85

  11. Points to Remember • Size of particles influences health effects • Size of particles emissions • Operating mode • Fuel type • Understanding the relationships can help improve policies and human health

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