Volume 16, Issue 4 (3-2024)
ijhe 2024, 16(4): 731-746 |
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Zazouli M, Dehghan S, Mohammadi Alashti M, Fendereski A, Dehbandi R. Investigating the amount of heavy metals in compost produced in the compost industries of Mazandaran province. ijhe 2024; 16 (4) :731-746
URL: http://ijhe.tums.ac.ir/article-1-6832-en.html
URL: http://ijhe.tums.ac.ir/article-1-6832-en.html
MohammadAli Zazouli1 
, Samaneh Dehghan1 , Mahdieh Mohammadi Alashti * 2, Afsaneh Fendereski3 , Reza Dehbandi4
, Samaneh Dehghan1 , Mahdieh Mohammadi Alashti * 2, Afsaneh Fendereski3 , Reza Dehbandi4
1- Department of Environmental Health Engineering, School of Public Health, Mazandaran University of Medical Sciences, Sari, Iran
2- Department of Environmental Health Engineering, School of Public Health, Mazandaran University of Medical Sciences, Sari, Iran ,mahdiemohammadi00@gmail.com
3- Department of biostatistics, School of Health, Mazandaran University of Medical Sciences, Sari, Iran
4- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, B 15 2TT Birmingham, United Kingdom AND Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
2- Department of Environmental Health Engineering, School of Public Health, Mazandaran University of Medical Sciences, Sari, Iran ,
3- Department of biostatistics, School of Health, Mazandaran University of Medical Sciences, Sari, Iran
4- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, B 15 2TT Birmingham, United Kingdom AND Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Abstract: (425 Views)
Background and Objective: One of the main limitations of using compost is the possibility of heavy metals with high concentrations. Unlike organic contaminants, these elements resist decomposition by microorganisms and, when present at elevated levels, pose a toxicity risk to soil, plants, aquatic ecosystems, and human health.
Materials and Methods: This study was a descriptive cross-sectional study conducted in 2021-2022w. Samples were collected from three compost factories in Mazandaran (Babol, Behshahr, and Tonekabon) using random sampling methods and prepared according to the acid digestion method (National Standard Institute 5615). The concentration of heavy metals in the samples was measured using an ICP-OES.
Results: The average concentration of arsenic, zinc, lead, cadmium, cobalt, chromium, copper, and nickel in the analyzed samples were 1.38±3.47, 490±151.5, 74±12, 2.56±0.65, 4.5±1.46, 31.72±16.47, 186.11±49.9, 22.72±4.2 mg/kg dry weight of compost, respectively. The average concentration of heavy metals in different cities was compared using the Kruskal-Wallis test, based on which the concentration of heavy metals in none of the cities was significantly different from each other (p>0.05).
Conclusion: The concentration of heavy metals in the investigated compost samples was lower than the limits specified in both domestic and international standards. Therefore, the final product of the examined compost factories meets the health standards for heavy metals and is safe for use in environmental applications.
Materials and Methods: This study was a descriptive cross-sectional study conducted in 2021-2022w. Samples were collected from three compost factories in Mazandaran (Babol, Behshahr, and Tonekabon) using random sampling methods and prepared according to the acid digestion method (National Standard Institute 5615). The concentration of heavy metals in the samples was measured using an ICP-OES.
Results: The average concentration of arsenic, zinc, lead, cadmium, cobalt, chromium, copper, and nickel in the analyzed samples were 1.38±3.47, 490±151.5, 74±12, 2.56±0.65, 4.5±1.46, 31.72±16.47, 186.11±49.9, 22.72±4.2 mg/kg dry weight of compost, respectively. The average concentration of heavy metals in different cities was compared using the Kruskal-Wallis test, based on which the concentration of heavy metals in none of the cities was significantly different from each other (p>0.05).
Conclusion: The concentration of heavy metals in the investigated compost samples was lower than the limits specified in both domestic and international standards. Therefore, the final product of the examined compost factories meets the health standards for heavy metals and is safe for use in environmental applications.
Type of Study: Research |
Subject:
General
Received: 2023/08/21 | Accepted: 2023/12/30 | Published: 2024/03/5
Received: 2023/08/21 | Accepted: 2023/12/30 | Published: 2024/03/5
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