Ecological risk assessment of heavy metals from cement factory dust

Firouzeh Yadegarnia Naeini,Bahman Kian,Asghar Mosleh Arani,Hamidreza Azimzadeh,Ahad Sotoudeh

doi:10.15171/ehem.2019.15

Firouzeh Yadegarnia Naeini, Bahman Kian + Show 3 more

Open Access

https://doi.org/10.15171/ehem.2019.15

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Abstract

Background: The release of metals from industrial factories is one of the most important sources ofenvironmental pollution. The present study aimed to determine the concentration of heavy metals likecadmium (Cd), chromium (Cr), manganese (Mn), nickel (Ni), and lead (Pb) in dust around the cementfactory.Methods: A total of 22 dust samples were collected from areas around the cement factory in Isfahanprovince in spring and summer and transferred to laboratory for chemical digestion. Risk index (RI),integrated pollution index (IPI), mean of contamination degree (mCd), and contamination factor (Cfi)were calculated to determine the contamination status.Results: The concentration of heavy metals in the falling dust around the factory was expressed as Cd<Ni <Pb <Mn <Cr. Pearson correlation showed that there is only a significant negative relationshipbetween the concentration of Cd and the distance from the factory. By increasing the distance from thefactory, the concentration of Cd in dust decreased. The results of falling dust analysis showed that Crhas a high-risk potential in two seasons of spring and summer and Cd has a middle level of pollutionin spring.Conclusion: According to the results, the deposited dust of study area is considered as a polluted dustand it is at higher risk of pollution with Cd and Cr.

Highlights

A dust storm is a meteorological phenomenon and usually occurs when the wind speed exceeds the threshold value and particles are removed from the soil [1]
The most contaminated sites are found within the 0 to 3 km of the cement factory [20], so, the present study aimed to determine the concentration of heavy metals such as Cd, Cr, Mn, Ni, and Pb in dust around the factory and determine the contamination level using the contamination factor (Cfi), integrated pollution index (IPI), risk index (RI), and mean of contamination degree at 0-3 km around the factory
The results show that the dust deposited around the cement factory area by considering pasture land-use standards in terms of Cr is polluted

Summary

Introduction

A dust storm is a meteorological phenomenon and usually occurs when the wind speed exceeds the threshold value and particles are removed from the soil [1]. Several studies have been conducted on the pollution caused by the cement industry and determined the concentration of heavy metals like Cd, Pb, copper, zinc, Ni, Cr, and cobalt in limestone, particulates, and surface soil around the factory [5,7,8,10,11,16,17,18,19]. Their results showed that the origin of heavy metals in soil depends on the dust rich in heavy metals from cement production [16].

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