Volume 16, Issue 2 (9-2023)
ijhe 2023, 16(2): 367-382 |
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Sadeghi S, Mohammadi F, Nafez A H, Gholipour S, Nikaeen M. Challenges related to compost spreading in urban green space: microbial risk assessment of accidental ingestion by children. ijhe 2023; 16 (2) :367-382
URL: http://ijhe.tums.ac.ir/article-1-6796-en.html
URL: http://ijhe.tums.ac.ir/article-1-6796-en.html
Sepideh Sadeghi1 
, Farzaneh Mohammadi2 , Amir Hossein Nafez2 , Sahar Gholipour3 , Mahnaz Nikaeen * 4
, Farzaneh Mohammadi2 , Amir Hossein Nafez2 , Sahar Gholipour3 , Mahnaz Nikaeen * 4
1- Department of Environmental Health Engineering, School of Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2- Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
3- Department of Environmental Health Engineering, School of Health, Kashan University of Medical Sciences, Kashan, Iran
4- Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran ,nikaeen@hlth.mui.ac.ir
2- Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
3- Department of Environmental Health Engineering, School of Health, Kashan University of Medical Sciences, Kashan, Iran
4- Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran ,
Abstract: (533 Views)
Background and Objective: The presence of pathogenic microorganisms in compost of solid waste can threat public health. Therefore, it is necessary to evaluate the safety of produced composts before its land application as a soil conditioner. This study was conducted to investigate the presence of pathogenic microorganisms in municipal solid waste (MSW) compost and health risks associated with accidental ingestion of compost by children.
Materials and Methods: In this study, sampling was done from compost piles at different public parks of Isfahan city during the period of compost spreading. Presence and concentration of pathogenic microorganisms including salmonella, campylobacter, cryptosporidium and adenovirus were investigated by culture or real-time PCR methods.
Results: All pathogenic microorganisms were detected in MSW compost in a frequency from 11%-62% with the highest frequency for detection of adenovirus. The health risk assessment showed that the highest risk of daily infection was for Cryptosporidium (7.67 × 10-4 pppy) and the lowest risk was related to adenovirus (8.27 × 10-10 pppy). The annual infection risk from gastrointestinal disease was calculated above guideline infection risk (10-3 pppy).
Conclusion: The results showed contamination of produced compost to pathogenic microorganisms and potential health risks from applying MSW compost in urban green spaces. Therefore, the relevant organizations should pay more attention to the composting process and its microbial quality and application in public access areas.
Materials and Methods: In this study, sampling was done from compost piles at different public parks of Isfahan city during the period of compost spreading. Presence and concentration of pathogenic microorganisms including salmonella, campylobacter, cryptosporidium and adenovirus were investigated by culture or real-time PCR methods.
Results: All pathogenic microorganisms were detected in MSW compost in a frequency from 11%-62% with the highest frequency for detection of adenovirus. The health risk assessment showed that the highest risk of daily infection was for Cryptosporidium (7.67 × 10-4 pppy) and the lowest risk was related to adenovirus (8.27 × 10-10 pppy). The annual infection risk from gastrointestinal disease was calculated above guideline infection risk (10-3 pppy).
Conclusion: The results showed contamination of produced compost to pathogenic microorganisms and potential health risks from applying MSW compost in urban green spaces. Therefore, the relevant organizations should pay more attention to the composting process and its microbial quality and application in public access areas.
Keywords: Compost, Municipal solid waste, Risk assessment, Accidental ingestion, Microbial characteristics
Type of Study: Research |
Subject:
General
Received: 2023/06/7 | Accepted: 2023/08/22 | Published: 2023/09/17
Received: 2023/06/7 | Accepted: 2023/08/22 | Published: 2023/09/17
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