An Estimation on Overall Emission Rate of Fugitive Dust Emitted from Road Construction Activity

Chang, Yu‐Min; Chang, Ting‐Yung; Chen, Wang-Kun

doi:10.1089/ees.1999.16.375

Cited by 14 publications

(5 citation statements)

References 3 publications

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“…This increase may be attributed to construction of a fly over bridge near the commercial and residential locations during 1997. Significant contribution to PM10 levels by fugitive emissions from construction activities is well documented ( , ). This is also evident from Table where a sudden appreciation in the percent exceedance of the 24-h average NAAQS during 1997 is obtained.…”

Section: Resultsmentioning

confidence: 99%

Increase in Inhalable Particulates' Concentration by Commercial and Industrial Activities in the Ambient Air of a Select Indian Metropolis

Kumar

Phadke

Tajne

et al. 2001

Environ. Sci. Technol.

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Inhalable particulates (particulates less than 10 micron) present in ambient air find passage into the respiratory system due to their small size and impair the health. Surveillance of inhalable particulates is, therefore, essential for assessing an inhalation health hazard. The activity also provides guidance for appropriate protection against the ill effects. Monitoring of inhalable particulates requires a high-volume sampler retrofitted with a size selective inlet (SSI) to separate and sample specified size-range fractions of suspended particulate matter in air. Measurement of inhalable particulates indirectly represents anthropogenic activity. In view of this, surveillance of inhalable particulates was conducted in select metropolitan cities of India during 1995-1997 to find out changes in their concentration. The inhalable particulates were measured by retrofitting a suitably designed SSI to the standard high-volume sampler. The study revealed that the concentration of inhalable particulates in the ambient air increased due to industrial activities up to 320, 168, and 546% and due to commercial activities up to 406, 198, and 140% in Ahmedabad, Mumbai, and Delhi, respectively. An increase in inhalable particulates' concentration during the above period also showed a marked seasonal variation. The increase due to commercial activity, however, did not show a definite tendency.

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Section: Resultsmentioning

confidence: 99%

Increase in Inhalable Particulates' Concentration by Commercial and Industrial Activities in the Ambient Air of a Select Indian Metropolis

Kumar

Phadke

Tajne

et al. 2001

Environ. Sci. Technol.

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“…Both PM and u are functions of x, y, z, and t. To simplify the problem with reasonable assumptions (Chang et al 1999…”

Section: Experimental Methodsmentioning

confidence: 99%

“…Thus, the fugitive PM emission rate has a high degree of temporary and spatial variability because of the sporadic nature of the wind on the emission potential. The fugitive PM emission rate has been found to increase with an increase in wind velocity (USEPA 1998;Chang et al 1999…”

Section: Wind Velocitymentioning

confidence: 99%

“…A major source of this urban PM is dust emissions from exposed areas. According to recent studies, dust and silt from exposed areas and other traffic-related emissions are the major sources of suspended PM in urban areas (Chang et al 1999;DeGaetano and Doherty 2004). Taiwan also encounters an air pollution problem from open rice straw burning every year, which sometimes causes extremely serious local air pollution during the harvesting period.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of reduction efficiency of woven straw for entrained emissions of particulate matter with diameters less than 10 µm (PM₁₀) and less than 2.5 µm (PM_2.5) from exposed areas at construction sitesA paper submitted to the Journal of Environmental Engineering and Science.

Chang

et al. 2010

Can. J. Civ. Eng.

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From an engineering application point of view in reducing fugitive particulate matter emissions, this paper presents experimental data comparing the efficiency of woven straw at reducing entrained emissions of particulate matter with diameters less than 10 mm (PM10) with that for particulate matter with diameters less than 2.5 mm (PM2.5) at construction sites. A series of field-analogous experiments were carried out to continuously measure PM10 and PM2.5 using laser particle monitors in an artificial wind tunnel system. It was found that the efficiency of woven straw at reducing either PM10 or PM2.5 is significantly dependent on the woven straw coverage ratio. The maximum reduction efficiencies for PM10 and PM2.5 are about 40% and 12%, respectively. Note that the reduction efficiencies approach zero as the coverage ratio is less than about 40%. Total elimination of PM2.5 and PM10 emissions is not possible, even using full-coverage woven straw. Reduction of PM2.5 emissions is less efficient than that of PM10 emissions using woven straw, and this trend is likely more obvious with an increase in the woven straw coverage ratio. The ratio of reduction efficiencies (R) between PM 2.5 and PM 10 for woven straw decreased slightly with an increase in the woven straw coverage ratio. Overall, for wind speeds of 0.5-3.0 m/s, silt contents of 4.8%-21.0%, and soil moisture contents of 10%-30% as used in this work, the average value of R is 0.31. The effects of wind velocity, silt content, and moisture content on the reduction efficiencies are also discussed.Résumé : D'un point de vue d'application technique pour réduire les émissions fugitives de matières particulaires, cet article présente des données expérimentales pour comparer l'efficacité en réduction de la paille tissée pour les émissions de matières particulaires entre PM 10 et PM 2,5 de zones exposées. Dans cette étude, des d'expériences analogues sur le terrain ont été réalisées pour mesurer en continu les PM 10 et PM 2,5 au moyen de détecteurs de particules au laser dans un tunnel aérodynamique artificiel. L'efficacité de la réduction de la paille tressée à réduire soit PM 10 ou PM 2,5 dépend beaucoup du rapport de couverture de la paille tressée. Les efficacités maximales de réduction pour PM 10 et PM 2,5 sont respectivement d'environ 40 % et 12 %. Il faut remarquer que les efficacités de réduction atteignent près de zéro lorsque le rapport de couverture est inférieur à environ 40 %. Un autre point intéressant est que l'élimination totale des émissions PM 2,5 et PM 10 est impossible même en utilisant une couverture complète de paille tressée. La réduction des émissions PM 2,5 est moins efficace que celle des émissions PM 10 pour la paille tressée et cette tendance sera probablement plus évidente avec l'augmentation du rapport de couverture en paille tressée. La présente étude montre que le rapport des efficacités de réduc-tion (R) entre PM 2,5 et PM 10 par la paille tressée diminue un peu avec une augmentation du rapport de couverture de paille tressée. Règle généra...

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“…Of those requirements, dust control for local repairs is a necessity. Previous research has been conducted on minimizing dust in an active construction setting during concrete construction (Tharr and Lofgren, 1993) and road construction (Chang et al , 1999). Huang et al (2007) also studied the dust pollution in different construction phases in earthwork, decoration and structural phases.…”

Section: Introductionmentioning

confidence: 99%

Renovation in hospitals: a case study on the use of control cubes for local repairs in health-care facilities

Mousavi

Sharma

Gajjar

et al. 2020

JFM

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Purpose The purpose of this study is to evaluate the effectiveness of the control cubes for dust control in health-care facilities. Research shows that more than 80% of pathogenic agents in hospitals are spread into the air, where they either remain airborne or deposit on the surface. At the same time, renovation and repair activities, including regular maintenance, are a necessity in active health-care facilities and a multitude of studies have documented their impact on indoor air quality. The dust that is generated by construction activities may potentially carry pathogenic agents, varying from coarse particles (≤10 µm, PM10) to fine particles (≤2.5 µm, PM2.5), including airborne bacteria, and fungal spores linked to high patient mortality in immune-compromised patients. Design/methodology/approach This study measures the impact and effectiveness of one such preventative measure, namely, the control cube (CC), on air quality during renovation and repair. CC is a temporary structure, typically made from stainless steel, around the local repair zone to minimize the spread of dust and potential microorganisms. The current paper presents a comparative analysis to identify the effectiveness of a CC equipped with the high-efficiency particulate filtration (HEPA) filter in a hospital setting by simulating construction renovation and repair work. Findings A baseline was established to measure the effectiveness of CCs and the impact of negative pressure on the indoor air quality in a hospital during simulated renovation work. Results showed that CCs are very effective in minimizing the spread of dust due to construction activities in the hospital. However, it is imperative to ensure that the air inside the CC is cleaned via filtration. Originality/value CCs are very effective, and this paper investigates the best approach for facility managers to implement this strategy.

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An Estimation on Overall Emission Rate of Fugitive Dust Emitted from Road Construction Activity

Cited by 14 publications

References 3 publications

Increase in Inhalable Particulates' Concentration by Commercial and Industrial Activities in the Ambient Air of a Select Indian Metropolis

Increase in Inhalable Particulates' Concentration by Commercial and Industrial Activities in the Ambient Air of a Select Indian Metropolis

Comparison of reduction efficiency of woven straw for entrained emissions of particulate matter with diameters less than 10 µm (PM₁₀) and less than 2.5 µm (PM_2.5) from exposed areas at construction sitesA paper submitted to the Journal of Environmental Engineering and Science.

Renovation in hospitals: a case study on the use of control cubes for local repairs in health-care facilities

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An Estimation on Overall Emission Rate of Fugitive Dust Emitted from Road Construction Activity

Cited by 14 publications

References 3 publications

Increase in Inhalable Particulates' Concentration by Commercial and Industrial Activities in the Ambient Air of a Select Indian Metropolis

Increase in Inhalable Particulates' Concentration by Commercial and Industrial Activities in the Ambient Air of a Select Indian Metropolis

Comparison of reduction efficiency of woven straw for entrained emissions of particulate matter with diameters less than 10 µm (PM10) and less than 2.5 µm (PM2.5) from exposed areas at construction sitesA paper submitted to the Journal of Environmental Engineering and Science.

Renovation in hospitals: a case study on the use of control cubes for local repairs in health-care facilities

Contact Info

Product

Resources

About

Comparison of reduction efficiency of woven straw for entrained emissions of particulate matter with diameters less than 10 µm (PM₁₀) and less than 2.5 µm (PM_2.5) from exposed areas at construction sitesA paper submitted to the Journal of Environmental Engineering and Science.