Research Seminar Series: Towards cleaner biofuels: the influence of biodiesel molecular structure on nanoparticle emissions
Professor Zoran Ristovski
International Laboratory for Air Quality and Health, Biofuels Engine Research Facility, Queensland University of Technology
Particulate matter (PM) emissions from combustion sources involve a complex mixture of solid and liquid particles suspended in a gas. Out of all the combustion sources PM emissions from diesel engines are a major contributor to the ambient air pollution problem in urban environments. While a range of strategies exists for mitigating diesel PM emissions in on-road and off-road environments, such as using diesel particulate filters, alternative fuels can also present a viable strategy. Alternative fuels, such as biodiesel, are currently being investigated not only to address global warming but also to reduce DPM emissions. Prior to widespread introduction of the biofuels into the transport sector a thorough knowledge of its impact on engine performance and emission will be critical to avoid consumer rejection. While a considerable research has been conducted describing the impact of different transesterified biodiesel fuel types on regulated emissions (i.e., PM, NOx, CO, and HCs) limited information is available addressing the impact of these fuel types on other particle properties that are more specific and relevant for their health effects. This presentation will look into the influence of biodiesel fuel physical and chemical properties on nanoparticle emissions, their toxicity as well as the ability of biodiesel emissions to contribute to the generation of secondary organic aerosols.
Professor Zoran Ristovski is an atmospheric scientist with almost 20 years of experience in the general area of airborne particle pollution working at QUT. His main areas of interest are in the characterisation of vehicle emission related nanoparticles, their physical and chemical properties, transport in the atmosphere as well as their toxicity. He has conducted pioneering studies on nanoparticle vehicle emissions and has extensively published in the area of nanoparticle emissions from combustion engines using various alternative fuels (LPG, CNG, Biodiesel, Hydrogen, ethanol). In total he has published over 150 journal publications that have attracted significant citation (h-index of 33). In the last few years he has concentrated his research effort on the fundamental aspects of nanoparticle emissions, formation and their toxicity from diesel engines running on various biofuels.
He is the recipient of a number of grants both from the Australian government and industry (over $6 million in total) as well as international grants from the European Union through FP6 and FP7. His research group, currently consisting of three academic staff and over ten postgraduate students, is a well-established and internationally recognised research group.
For more information, please contact A/Prof. Shawn Kook.