Results 171 to 180 of about 67,646 (195)
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Nitrogen oxide emissions after nitrogen additions in tropical forests
Nature, 1999Industrial development and agricultural intensification are projected to increase in the humid tropics over the next few decades1, increasing the emissions, transport and deposition of nitrogen-containing compounds2. Most studies of the consequences of enhanced nitrogen deposition have been performed in temperate ecosystems in which biological ...
Sharon J. Hall, Pamela A. Matson
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Satellite Monitoring of Nitrogen Oxide Emissions
2010The efficient control of air pollutant emissions into the atmosphere is important for sustainable development. Remarkable recent progress in satellite measurements of the composition of the troposphere has opened new prospects for monitoring of air pollution and emissions of pollutants.
Igor Konovalov +3 more
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Nitrogen in coal as a source of nitrogen oxide emission from furnaces
Fuel, 1974Abstract In this paper are presented some experimental results on the conversion of fuel-nitrogen to nitric oxide in both diffusion and premixed flames, and the results are used to speculate on mechanisms of nitric oxide formation. Models of pulverized-coal combustion are reviewed and used to examine the conditions under which fuel-nitrogen ...
David H. Fine +3 more
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Numerical modelling of emissions of nitrogen oxides in solid fuel combustion
Journal of Environmental Management, 2018Among the combustion products, nitrogen oxides are one of the main contributors to a negative impact on the environment, participating in harmful processes such as tropospheric ozone and acid rains production. The main source of emissions of nitrogen oxides is the human combustion of fossil fuels. Their formation models are investigated and implemented
Mikulčić, Hrvoje +3 more
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Megacity Emissions and Lifetimes of Nitrogen Oxides Probed from Space
Science, 2011Analysis of downwind plume evolution using satellite observations can be used for air pollution estimates.
Beirle, S. +4 more
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Estimation of uncertainty in the determination of nitrogen oxides emissions
Accreditation and Quality Assurance, 2006This paper presents a methodology for estimation of uncertainty on a reference test method for the determination of nitrogen oxides concentration in gaseous emissions from stationary sources. As a first stage for identification of uncertainty sources, the test method is carefully reviewed in detail.
Joao F. P. Gomes +2 more
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Sulphur Dioxide and Nitrogen Oxide Emission Scenarios for Finland
1990A model is presented for the estimation of the future S02 and NOx emissions in Finland on the basis of energy use and traffic scenarios and emission reduction strategies. The model is part of the Finnish Integrated Acidification Assessment Model system (HAKOMA).The energy use is given in the model for five sectors and nine fuels. Process emissions from
Savolainen Ilkka, Tähtinen Markus
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Modeling of Nitrogen Oxides Emissions from CFB Combustion
2009In this work, a simplified description of combustion and nitrogen oxides chemistry based on 12 components was implemented in a 1.5D model framework with the aim to compare the results with ones earlier obtained with a detailed reaction scheme. Heterogeneous chemistry is given by the same models as in the earlier work but the homogeneous and catalytic ...
Kallio, Sirpa, Keinonen, Marja
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Activated carbon for control of nitrogen oxide emissions
Journal of Materials Research, 1995Activated carbons were used to selectively remove NOx from simulated flue gas at temperatures between 25 and 125 °C. Processing conditions and physical/chemical characteristics of the carbons which affected NOx adsorption, storage, and release were investigated.
A.M. Rubel, M.L. Stewart, J.M. Stencel
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Nitrogen Oxides: Vehicle Emissions and Atmospheric Chemistry
2012An overview of vehicle emissions, ambient concentrations, and atmospheric chemistry of NO, NO2, and N2O is presented. We start with a discussion of air quality standards and trends in NO2 levels. We then discuss the formation of nitrogen oxides in vehicle engines, technologies used to control emissions of nitrogen oxides, and the trends in vehicle ...
Timothy J. Wallington +2 more
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