Physical-Chemical Analysis and Comparison with Standards of the Compost Produced in Sanandaj, Iran
Shahram Sadeghi1,2, Mahbobeh Dehvari3, Pegah Bahmani4, Pari Teymouri4, Ahmad Fattahi5, Mojtaba Sadeghnia5, Reza Ali Fallahzadeh3*
1Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, Iran.
2Department of Environmental Health Engineering, School of Public Health, Kurdistan University of Medical Sciences, Sanandaj, Iran.
3Department of Environmental Health Engineering, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
4Department of Environmental Health Engineering and Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran.
5Department of Occupational Health Engineering, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
DOI: 10.4236/oalib.1101855   PDF   HTML   XML   1,242 Downloads   2,085 Views   Citations


Improper disposal of solid waste is one of the main causes of environmental pollution. Converting solid waste into compost and using it as an organic fertilizer in agriculture are an effective waste management method. Quality of such fertilizer may affect both human and environmental health. Therefore, in this study, compost from the compost plant of Sanandaj City was analyzed for its physical-chemical characteristics and the results were compared with the standards. In this descriptive-analytical study, compost samples were collected throughout a 3-month period in spring season at intervals of 15 days (2 samples in each sampling) for chemical analysis. In the present study, parameters such as pH, organic matter, EC, carbon, nitrogen, phosphorus, sodium, potassium, arsenic, lead, cadmium, mercury and chromium were studied. According to the results, the mean pH, EC, organic matter, carbon, nitrogen, phosphorus, sodium and potassium were 7.657, 8.883 ds/m, 37.793%, 26.46%, 2.50%, 0.424%, 0.685 and 0.67%, respectively. The average concentrations of heavy metals were 0.398, 95, 1.575, <0.5 and 40.275 mg/kg for arsenic, lead, cadmium, mercury and chromium, respectively. Results from this study were compared with the standards set for compost. Organic matter content, sodium, arsenic, mercury and chromium were almost within the acceptable ranges. Lead and cadmium concentrations were lower than the standard. But, the values of pH and EC, the percentages of carbon and nitrogen, and also the amounts of phosphorus and potassium were in accordance with the standards. The results of this study show that the quality of the produced compost in the studied plant is almost acceptable.

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Sadeghi, S. , Dehvari, M. , Bahmani, P. , Teymouri, P. , Fattahi, A. , Sadeghnia, M. and Fallahzadeh, R. (2015) Physical-Chemical Analysis and Comparison with Standards of the Compost Produced in Sanandaj, Iran. Open Access Library Journal, 2, 1-6. doi: 10.4236/oalib.1101855.

Conflicts of Interest

The authors declare no conflicts of interest.


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