Pongamia pinata methyl ester (PPME) is chosen as alternative fuel for diesel engines. It is renewable and offer potential reduction in CO; HC and smoke emissions due to higher O2 contents in it compared to diesel fuel but higher nitrogen oxides (NOx) emission. Nitrogen oxides (NOx) in the atmosphere cause serious environmental problems, such as photochemical oxidant, acid rain, and global warmi...

Dickinson, Eva, Recep Tuncer, Evan Nadler, Patricia Boyle, Sean Alber, Simon Watkins, and Henri Ford. NOX, a novel nitric oxide scavenger, reduces bacterial translocation in rats after endotoxin challenge. Am. J. Physiol. 277 (Gastrointest. Liver Physiol. 40): G1281–G1287, 1999.— Endotoxemia promotes gut barrier failure and bacterial translocation (BT) by upregulating inducible nitric oxide syn...

In this study, the efforts to reduce NOx and particulate matter (PM) emissions from a diesel engine using both ethanol-selective catalytic reduction (SCR) of NOx over an Ag/Al2O3 catalyst and a biodiesel-ethanol-diesel fuel blend (BE-diesel) on an engine bench test are discussed. Compared with diesel fuel, use of BE-diesel increased PM emissions by 14% due to the increase in the soluble organic...

Aviation NOx emissions promote tropospheric ozone formation, which is linked to climate warming and adverse health effects. Modeling studies have quantified the relative impact of aviation NOx on O3 in large geographic regions. As these studies have applied forward modeling techniques, it has not been possible to attribute O3 formation to individual flights. Here we apply the adjoint of the glo...

Accurate representation of odd-nitrogen species (NOx) in the winter polar middle atmosphere is an important factor in correctly predicting ozone in the upper stratosphere. The concentration of NOx depends on several factors, including the state of stratospheric winds, the strength of diffusive transport near the mesopause, and the deposition of energetic particles in the mesosphere and the lowe...

A Computational Fluid Dynamics (CFD) modeling study has been conducted to evaluate the application of overfire air (OFA), Fuel Lean Gas Reburn (FLGR), and Selective Non-Catalytic Reduction (SNCR) to reduce NOx emissions from Owensboro Municipal Utilities’ Elmer Smith Station. Smith Station Unit 1 is a nominally rated 150 MWe single-wall cyclone fired boiler with three barrels. FLGR is a NOx con...

Effects of various meteorological conditions and spatial emission resolutions on the ozone concentration & ROG/NOx limitation in the Milan area (I) N. Bärtsch-Ritter, J. Keller, J. Dommen, and A. S. H. Prévôt Paul Scherrer Institute, Laboratory of Atmospheric Chemistry, CH-5232 Villigen PSI, Switzerland Received: 23 December 2003 – Accepted: 30 January 2003 – Published: 12 February 2003 Corresp...

Lean NOx traps are an important concept for reducing NOx in lean exhausts from diesel engines and lean burn gasoline engines. A global kinetic model has been developed in this work that can describe the NOx emissions after the catalyst. The model is based on flow reactor experiments using a model Pt/Rh/BaO/Al2O3 catalyst. The objective with the model was to use global kinetics to facilitate rap...

Fly ash generated from low NOx burners at American Electric Power's Glen Lyn facility was beneficiated to remove residual carbon, magnetic particles, and cenospheres. The clean fly ash had a mean particle size of about 30 microns, which is coarser than typical commercial fillers used in plastics. To obtain a finer sized fly ash, air classification was used to separate the clean fly ash into its...