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Suppression of Soil Dust Emissions from Large-Scale Construction Sites Using Starch and Polyvinyl Alcohol
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Author(s): Jong-Soo Choi (Kwangwoon University, South Korea), Dong-Su Kim (Kwangwoon University, South Korea), Yu-Lim Choi (Kwangwoon University, South Korea), Lakshmi Prasanna Lingamdinne (Kwangwoon University, South Korea), Janardhan Reddy Koduru (Kwangwoon University, South Korea), Jae-Kyu Yang (Kwangwoon University, South Korea)and Yoon-Young Chang (Kwangwoon University, South Korea)
Copyright: 2019
Volume: 8
Issue: 2
Pages: 9
Source title:
International Journal of Chemoinformatics and Chemical Engineering (IJCCE)
Editor(s)-in-Chief: Rama Rao Karri (Universiti Teknologi Brunei, Brunei Darussalam)
DOI: 10.4018/IJCCE.2019070104
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Abstract
Soil dust emitted from large-scale construction sites in urban areas impacts air quality and creates a severe health threat to residents. Water spraying is commonly practiced to lower dust emission in construction sites, but its long-term effectiveness is questionable. In this study the utility of starch, polyvinyl alcohol (PVA), and a blend of starch and PVA in various proportions was investigated for the suppression of soil dust emissions at construction sites in Seoul. The efficiency of each dust suppressant was tested with test soil samples in a laboratory-scale wind tunnel box under different concentrations of suppressants and soil textures. Starch and PVA showed superior ability to suppress soil dust emissions compared to moistening bare soil, resulting in PM10 lower than the daily limit values of 30 μg/m3. PVA showed higher soil dust suppression capability for all conditions over starch. Test soils sprayed with dust suppressants significantly improved aggregate stability compared to untreated soils.
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