PM10, PM2.5 and PM1.0—Emissions from industrial plants—Results from measurement programmes in Germany

Ehrlich, Chr.; Noll, G.; Kalkoff, W; Baumbach, Günter; Dreiseidler, A.

doi:10.1016/j.atmosenv.2007.03.059

Cited by 97 publications

(59 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, light attenuation only gives the aerosol information (aerosol diameters, surface and volume) for fine particles with diameters smaller than 1 µm. Assuming a PM 1 /PM 10 mass ratio of 50% in urban air (Vallius et al, 2000;Ehrlich et al, 2007;Ariola et al, 2006;Spindler et al, 2004;Labban et al, 2004;Li and Lin, 2002;Gomiscek et al, 2004;Liu et al, 2004), the calculated aerosol mass by light attenuation is in agreement with our measured PM 10 values.…”

Section: Retrieval Methods Of Aerosol Parameterssupporting

confidence: 77%

Observations of high rates of NO<sub>2</sub>-HONO conversion in the nocturnal atmospheric boundary layer in Kathmandu, Nepal

Galle

Panday

et al. 2009

Atmos. Chem. Phys.

View full text Add to dashboard Cite

Abstract. Nitrous acid (HONO) plays a significant role in the atmosphere, especially in the polluted troposphere. Its photolysis after sunrise is an important source of hydroxyl free radicals (OH). Measurements of nitrous acid and other pollutants were carried out in the Kathmandu urban atmosphere during January-February 2003, contributing to the sparse knowledge of nitrous acid in South Asia. The results showed average nocturnal levels of HONO (1.7±0.8 ppbv), NO 2 (17.9±10.2 ppbv), and PM 10 (0.18±0.11 mg m −3 ) in urban air in Kathmandu. Surprisingly high ratios of chemically formed secondary [HONO] to [NO 2 ] (up to 30%) were found, which indicates unexpectedly efficient chemical conversion of NO 2 to HONO in Kathmandu. The ratios of [HONO]/[NO 2 ] at night were found to be much higher than previously reported values from measurements in urban air in Europe, North America and Asia. The influences of aerosol surface, ground reactive surface, and relative humidity on NO 2 -HONO chemical conversion were discussed. The high humidity, strong and low inversion layer at night, and high aerosol pollution burden in Kathmandu may explain the particularly efficient conversion of NO 2 to HONO.

show abstract

Section: Retrieval Methods Of Aerosol Parameterssupporting

confidence: 77%

Observations of high rates of NO<sub>2</sub>-HONO conversion in the nocturnal atmospheric boundary layer in Kathmandu, Nepal

Galle

Panday

et al. 2009

Atmos. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…This mean value seems to be low compared to in-stack values generally reported in previous studies on wood stove (in which sampling and measuring conditions are the same than in this study):  89 -143 mg.m -3 according to Kosinski and Saade [9];  59 -130 mg.Nm -3 at 11% O 2 according to Ehrlich et al [10]. Nevertheless, as units employed are not exactly the same, it is difficult to evaluate precisely the discrepancies in results (especially concerning Ehrlich et al results).…”

Section: In-stack Measurements: Impact Of Studied Parametersmentioning

confidence: 79%

Particles emitted by a residential wood stove: comparison of various sampling and measuring methods

Dreff-Lorimier¹,

Viriel²

2010

WIT Transactions on Ecology and the Environment

View full text Add to dashboard Cite

show abstract

“…Geometric mean and geometric standard deviation were 0.2 μm, 2.4 respectively. This size range corresponds to the most penetrating particle size in the scrubber and in most other precipitators as well (Ehrlich et al, 2007;Peukert et al, 2001;Theodore and Buonicore, 1988). Therefore, it is deemed to be the optimum size range of particles for the spray tower scrubber experiment for this study (Kim et al, 2012).…”

Section: Generation Of Test Particlesmentioning

confidence: 99%

“…Fine particles less than 2.5 μm are emitted from a power plant, an industrial boiler and other industrial facilities (Ehrlich et al, 2007). They are removed by rainout and washout rather than gravity sedimentation due to their physical properties, i.e.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Enhancement of Particle Removal Efficiency in Spray Tower Scrubber Using Electrospray

Kim¹,

Kim²,

Lee³

et al. 2014

Asian J. Atmos. Environ

View full text Add to dashboard Cite

There have been a lot of efforts to keep permissible emission standards and to reduce the amount of emitted air pollutants. There are several air pollution control equipments, however, wet scrubber is used to remove particulate matters and gaseous pollutants simultaneously, even if it has low collection efficiency in the particle size less than 5.0 μm. To overcome this problem, we introduced a spray tower scrubber with an electrospray system which a high voltage was indirectly applied. We found that collection efficiency of fine particles in the electrospray system was improved by increasing electrical field strength and the ratio of liquid-gas flow rate (from 41% to 84% for 0.3 μm particles). In addition, a number of small droplets generated from an electrospray system led high collection efficiency, resulting from electrostatic attraction between droplets and particles and higher collision frequency. Therefore, we can conclude that the introduction of an electrospray system is quite effective to increase the particle removal efficiency of a spray tower scrubber.

show abstract

PM10, PM2.5 and PM1.0—Emissions from industrial plants—Results from measurement programmes in Germany

Cited by 97 publications

References 3 publications

Observations of high rates of NO<sub>2</sub>-HONO conversion in the nocturnal atmospheric boundary layer in Kathmandu, Nepal

Observations of high rates of NO<sub>2</sub>-HONO conversion in the nocturnal atmospheric boundary layer in Kathmandu, Nepal

Particles emitted by a residential wood stove: comparison of various sampling and measuring methods

Experimental Study on the Enhancement of Particle Removal Efficiency in Spray Tower Scrubber Using Electrospray

Contact Info

Product

Resources

About

PM10, PM2.5 and PM1.0—Emissions from industrial plants—Results from measurement programmes in Germany

Cited by 97 publications

References 3 publications

Observations of high rates of NO&lt;sub&gt;2&lt;/sub&gt;-HONO conversion in the nocturnal atmospheric boundary layer in Kathmandu, Nepal

Observations of high rates of NO&lt;sub&gt;2&lt;/sub&gt;-HONO conversion in the nocturnal atmospheric boundary layer in Kathmandu, Nepal

Particles emitted by a residential wood stove: comparison of various sampling and measuring methods

Experimental Study on the Enhancement of Particle Removal Efficiency in Spray Tower Scrubber Using Electrospray

Contact Info

Product

Resources

About

Observations of high rates of NO<sub>2</sub>-HONO conversion in the nocturnal atmospheric boundary layer in Kathmandu, Nepal

Observations of high rates of NO<sub>2</sub>-HONO conversion in the nocturnal atmospheric boundary layer in Kathmandu, Nepal