By a News Reporter-Staff News Editor at Ecology, Environment & Conservation -- Current study results on Environmental Science and Technology have been published. According to news reporting from Piscataway, New Jersey, by VerticalNews journalists, research stated, "Fuel additives incorporating nanosized ceria have been increasingly used in diesel engines as combustion promoters. However, few studies have assessed the impact of these nanotechnology-based additives on pollutant emissions."
The news correspondents obtained a quote from the research from Rutgers State University, "Here, we systematically compare emission rates of particulate and gaseous pollutants from a single cylinder, four-cycle diesel engine using fuel mixes containing nanoceria of varying concentrations. The test fuels were made by adding different amounts of a commercial fuel additive Envirox into an ultralow-sulfur diesel fuel at 0 (base fuel), 0.1-, 1-, and 10-fold the manufacturer-recommended concentration of 0.5 mL Envirox per liter of fuel. The addition of Envirox resulted in ceria-concentration-dependent emission reductions of CO2, CO, total particulate mass, formaldehyde, acetaldehyde, acrolein, and several polycyclic aromatic hydrocarbons. These reductions at the manufacturer-recommended doping concentration, however, were accompanied by a substantial increase of certain other air pollutants, specifically the number of ultrafine particles (+32%), NOx (+9.3%), and the particle-phase benzo[a]pyrene toxic equivalence quotient (+35%). Increasing fuel ceria concentrations also led to decreases in the size of emitted particles."
According to the news reporters, the research concluded: "Given health concerns related to ultrafine particles and NOx, our findings call for additional studies to further evaluate health risks associated with the use of nanoceria additives in various engines under various operating conditions."
For more information on this research see: Impacts of a Nanosized Ceria Additive on Diesel Engine Emissions of Particulate and Gaseous Pollutants. Environmental Science & Technology, 2013;47(22):13077-13085. Environmental Science & Technology can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Environmental Science & Technology - www.pubs.acs.org/journal/esthag)
Our news journalists report that additional information may be obtained by contacting J.F. Zhang, Rutgers State University, Environm & Occupat Hlth Sci Inst, Piscataway, NJ 08901, United States. Additional authors for this research include Y. Nazarenko, L. Zhang, L. Calderon, K.B. Lee, E. Garfunkel, S. Schwander, T.D. Tetley, K.F. Chung, A.E. Porter, M. Ryan, H. Kipen, P.J. Lioy and G. Mainelis.
Keywords for this news article include: Piscataway, New Jersey, United States, North and Central America, Environmental Science and Technology
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