scispace - formally typeset
Search or ask a question
Topic

NOx

About: NOx is a research topic. Over the lifetime, 26367 publications have been published within this topic receiving 496555 citations.


Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, 45 fuel blends were prepared and their stability was evaluated and the following mixtures were stable for the 90-day period and were used in the emission study: diesel/ethanol, ethanol, biodiesel, and castor oil.

128 citations

Journal ArticleDOI
TL;DR: It is confirmed that isotope-modeling by δ15N-NO3- is a promising tool for partitioning NOx sources and provides guidance to policymakers with regard to options for NOx reduction in North China.
Abstract: Nitrogen oxides (NOx, including NO and NO2) play an important role in the formation of atmospheric particles Thus, NOx emission reduction is critical for improving air quality, especially in severely air-polluted regions (eg, North China) In this study, the source of NOx was investigated by the isotopic composition (δ15N) of particulate nitrate (p-NO3–) at Beihuangcheng Island (BH), a regional background site in North China It was found that the δ15N-NO3– (n = 120) values varied between −17‰ and +240‰ and the δ18O-NO3– values ranged from 494‰ to 1039‰ On the basis of the Bayesian mixing model, 2778 ± 889%, 3653 ± 666%, 2201 ± 692%, and 1368 ± 316% of annual NOx could be attributed to biomass burning, coal combustion, mobile sources, and biogenic soil emissions, respectively Seasonally, the four sources were similar in spring and fall Biogenic soil emissions were augmented in summer in association with the hot and rainy weather Coal combustion increased significantly in winter with oth

128 citations

Journal ArticleDOI
TL;DR: In this article, the effect of Calophyllum inophyllium methyl ester on diesel engine performance, emission and combustion characteristics at different injection pressures was investigated. But the results showed that the combustion characteristics of biodiesel at all injection pressures followed a similar trend to that of conventional diesel.

127 citations

Journal ArticleDOI
TL;DR: The results in the present work underscores the strong influence that the NOx content in the system has on aerosol formation during the photochemical oxidation of aromatic hydrocarbons and the importance of performing experiments with NOx concentrations relevant to the atmosphere.
Abstract: It is currently assumed that benzene contributes only negligibly to secondary organic aerosol formation in the atmosphere. Our understanding of the capacity of benzene to generate secondary aerosols is based on the work of Izumi and Fukuyama (Atmos. Environ. 1990, 24A, 1433) in which two photosmog experiments with benzene in the presence of NOx were performed and no particle formation was observed. In contrast to the observations of Izumi and Fukuyama, experiments performed in the EUPHORE large outdoor simulation chamber have clearly shown aerosol formation during the photochemical oxidation of benzene in various NOx regimes. The maximum aerosol yields of 8−25% on a mass basis are comparable to yields obtained during the photochemical oxidation of other aromatic compounds under similar conditions. In addition, a density of 1.35 ± 0.04 g/cm3 for the secondary organic aerosol from the benzene photochemical oxidation in the presence of NOx has been determined through the simultaneous measurement of aerosol v...

127 citations

Journal ArticleDOI
TL;DR: In this article, the use of microalgae biodiesel from Chlorella Protothecoides (MCP-B) as alternative fuel for Compression Ignitions (CI) engines was investigated.

127 citations


Network Information
Related Topics (5)
Combustion
172.3K papers, 1.9M citations
88% related
Biomass
57.2K papers, 1.4M citations
78% related
Adsorption
226.4K papers, 5.9M citations
76% related
Carbon
129.8K papers, 2.7M citations
76% related
Particle size
69.8K papers, 1.7M citations
76% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20241
20231,699
20223,249
20211,405
20201,353
20191,367