Document Detail


Fugitive dust emission source profiles and assessment of selected control strategies for particulate matter at gravel processing sites in Taiwan.
MedLine Citation:
PMID:  21090554     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Particles emitted from gravel processing sites are one contributor to worsening air quality in Taiwan. Major pollution sources at gravel processing sites include gravel and sand piles, unpaved roads, material crushers, and bare ground. This study analyzed fugitive dust emission characteristics at each pollution source using several types of particle samplers, including total suspended particulates (TSP), suspended particulate (PM10), fine suspended particulate (PM2.5), particulate sizer, and dust-fall collectors. Furthermore, silt content and moisture in the gravel were measured to develop particulate emission factors. The results showed that TSP (< 100 microm) concentrations at the boundary of gravel sites ranged from 280 to 1290 microg/m3, which clearly exceeds the Taiwan hourly air quality standard of 500 microg/m3. Moreover, PM10 concentrations, ranging from 135 to 550 microg/m3, were also above the daily air quality standard of 125 microg/m3 and approximately 1.2 and 1.5 times the PM2.5 concentrations, ranging from 105 to 470 microg/m3. The size distribution analysis reveals that mass mean diameter and geometric standard deviation ranged from 3.2 to 5.7 microm and from 2.82 to 5.51, respectively. In this study, spraying surfactant was the most effective control strategy to abate windblown dust from unpaved roads, having a control efficiency of approximately 93%, which is significantly higher than using paved road strategies with a control efficiency of approximately 45%. For paved roads, wet suppression provided the best dust control efficiencies ranging from 50 to 83%. Re-vegetation of disturbed ground had dust control efficiencies ranging from 48 to 64%.
Authors:
Chang-Tang Chang; Yu-Min Chang; Wen-Yinn Lin; Ming-Ching Wu
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the Air & Waste Management Association (1995)     Volume:  60     ISSN:  1096-2247     ISO Abbreviation:  J Air Waste Manag Assoc     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-11-24     Completed Date:  2010-12-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9503111     Medline TA:  J Air Waste Manag Assoc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1262-8     Citation Subset:  IM    
Affiliation:
Department of Environmental Engineering, National I-Lan University, I-Lan, Taiwan, Republic of China. ctchang@niu.edu.tw
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MeSH Terms
Descriptor/Qualifier:
Air Pollutants / analysis*
Air Pollution / prevention & control*
Construction Materials / analysis*
Dust / analysis*,  prevention & control*
Environmental Monitoring
Humidity
Particulate Matter / analysis*
Seasons
Taiwan
Chemical
Reg. No./Substance:
0/Air Pollutants; 0/Dust; 0/Particulate Matter

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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