Effectiveness of selective catalytic reduction systems on reducing gaseous emissions from an engine using diesel and biodiesel blends
Autor: | Sanja Potgieter-Vermaak, Ana F. L. Godoi, J.H. Potgieter, Dennis Rempel, Guilherme C. Borillo, Ricardo H. M. Godoi, Fernando M Weronka, Renato de Arruda Penteado Neto, Carlos Itsuo Yamamoto, Simone S M Santana, Yara S. Tadano |
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Rok vydání: | 2015 |
Předmět: |
Biodiesel
Diesel exhaust Waste management General Chemistry Diesel engine Catalysis Hydrocarbons Ultra-low-sulfur diesel Diesel fuel Biofuel Environmental chemistry Air Pollution Biofuels Spectroscopy Fourier Transform Infrared Environmental Chemistry Environmental science Diesel exhaust fluid NOx Gasoline Sulfur Vehicle Emissions |
Zdroj: | Environmental sciencetechnology. 49(5) |
ISSN: | 1520-5851 |
Popis: | The aim of this investigation was to quantify organic and inorganic gas emissions from a four-cylinder diesel engine equipped with a urea selective catalytic reduction (SCR) system. Using a bench dynamometer, the emissions from the following mixtures were evaluated using a Fourier transform infrared (FTIR) spectrometer: low-sulfur diesel (LSD), ultralow-sulfur diesel (ULSD), and a blend of 20% soybean biodiesel and 80% ULSD (B20). For all studied fuels, the use of the SCR system yielded statistically significant (p < 0.05) lower NOx emissions. In the case of the LSD and ULSD fuels, the SCR system also significantly reduced emissions of compounds with high photochemical ozone creation potential, such as formaldehyde. However, for all tested fuels, the SCR system produced significantly (p < 0.05) higher emissions of N2O. In the case of LSD, the NH3 emissions were elevated, and in the case of ULSD and B20 fuels, the non-methane hydrocarbon (NMHC) and total hydrocarbon of diesel (HCD) emissions were significantly higher. |
Databáze: | OpenAIRE |
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