Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2021 May 2;19(1):1057-1067.
doi: 10.1007/s40201-021-00672-3. eCollection 2021 Jun.

Characteristics and health effects of potentially pathogenic bacterial aerosols from a municipal solid waste landfill site in Hamadan, Iran

Mohammad Taghi Samadi  1 , Amir Hossein Mahvi  2   3 , Mostafa Leili  1 , Abdulrahman Bahrami  4 , Jalal Poorolajal  5   6 , Doustmorad Zafari  7 , Ashraf Mazaheri Tehrani  1   8
Affiliations

Characteristics and health effects of potentially pathogenic bacterial aerosols from a municipal solid waste landfill site in Hamadan, Iran

Mohammad Taghi Samadi et al. J Environ Health Sci Eng. .

Abstract

The aim of this study was to evaluate the potential pathogenic bacterial aerosols produced from the municipal solid waste landfill site and its health risk assessment in the Hamadan city at west of Iran. In this study, air samples were collected every month during spring and summer at six locations including the active zone, leachate collection pond, infectious waste landfill, upwind, closure landfill, and downwind using the Andersen impactor. Spatial and seasonal variations of the potential pathogenic bacterial aerosols were detected. Also, Health risk associated were estimated based on the average daily dose rates (ADD) of exposure by inhalation. The mean concentration of potentially pathogenic bacterial aerosols were 468.7 ± 140 CFU m- 3 1108.5 ± 136.9 CFU m- 3 detected in the active zone in spring and summer, respectively. Also, there was a significant relationship between meteorological parameters and bacterial concentration (p < 0.05). The predominant potential pathogenic bacterial identified in the spring were Proteus mirabilis, Streptococcus sp., and Pseudomonas sp., while in summer were Pseudomonas sp., Staphylococcus aureus, and Escherichia coli. The hazard quotient (HQ) in both seasons were less of 1. Bacteria were spread throughout the landfill space, but their maximum density was observed around the active zone and leachate collection pond. This study highlights the importance of exposure to potential pathogenic bacterial aerosols in the summer and its adverse effects, especially in the MSW landfill site active zone. Finally, controlled exposure can reduce the health hazard caused by the potential pathogenic bacterial aerosols.

Keywords: Bacterial aerosol; Hamadan; Health effects; Landfill; Municipal solid waste.

PubMed Disclaimer

Conflict of interest statement

Conflict of interestNo conflict of interest has been reported by the authors.

Figures

Fig. 1
Fig. 1
The geographical location of the studied area
Fig. 2
Fig. 2
Bacterial aerosols concentration at both season in the studied area (A: pathogenic and B: non-pathogenic)
Fig. 3
Fig. 3
Contribution of the different type of potentially pathogenic bacterial aerosols in the ambient air of the studied area (a: spring and b: summer)
Fig. 4
Fig. 4
HQ of potentially pathogenic bacterial aerosols by inhalation exposure in the landfill site workers
Fig. 5
Fig. 5
Spatial distribution of potentially pathogenic bacterial aerosols in the study area (a: spring and b: summer)
See this image and copyright information in PMC

References

    1. Hosseini S, Yaghmaeian K, Yousefi N, Mahvi A. Estimation of landfill gas generation in a municipal solid waste disposal site by LandGEM mathematical model. Glob J Environ Sci Manag. 2018;4(4):493–506.
    1. Mazaheri Tehrani A, Bahrami A, Leili M, Poorolajal J, Zafari D, Samadi M, et al. Investigation of seasonal variation and probabilistic risk assessment of BTEX emission in municipal solid waste transfer station. Int J Environ Anal Chem. 2020:1–14.
    1. Chen DM-C, Bodirsky BL, Krueger T, Mishra A, Popp A. The world’s growing municipal solid waste: Trends and impacts. Environmental Research Letters. 2020;15(7):07402
    1. Ghanbarian M, Ghanbarian M, Ghanbarian M, Mahvi AH, Hosseini M. Determination of bacterial and fungal bioaerosols in municipal solid-waste processing facilities of Tehran. Journal of Environmental Health Science and Engineering. 2020:18(2):865–72. - PMC - PubMed
    1. Madhwal S, Prabhu V, Sundriyal S, Shridhar V. Distribution, characterization and health risk assessment of size fractionated bioaerosols at an open landfill site in Dehradun, India. Atmospheric Pollution Research. 2020;11(1):156–69. doi: 10.1016/j.apr.2019.10.002. - DOI

LinkOut - more resources