QUALITY ASSESSMENT OF COMPOST IN IRAN AND THE NEED FOR STANDARDS AND QUALITY ASSURANCE

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HEYDARZADEH N.; ABDOLI M.A.

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Journal: Journal of Environmental Studies Year:2009 | Volume:34 | Issue:48 Page(s): 29-40

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Information Journal Paper

Title

QUALITY ASSESSMENT OF COMPOST IN IRAN AND THE NEED FOR STANDARDS AND QUALITY ASSURANCE

Author(s)

HEYDARZADEH N. | ABDOLI M.A. | Issue Writer Certificate

Keywords

COMPOST QUALITYQ3

STANDARDQ2

MUNICIPAL SOLID WASTEQ3

Abstract

Municipal solid waste (MSW) composts are being produced now in different cities of Iran. Composting has been an attractive solution for MSW disposal in several municipalities because disposal of MSW is a difficult task in some area of Iran. However, poor quality of compost is one of the most important problems. Iran COMPOST QUALITY is studied in This research. Several compost samples were selected for the research including: six ordinary MSW compost samples from Tehran, Mashhad, Isfahan and Tabriz Compost Plants as well as three enriched MSW compost samples. Studied parameters were heavy metals (Cu, Zn and Pb) Electrical conductivity (EC), pH, carbon-nitrogen ratio (C/N), Nitrogen/ Potassium/ Phosphate (NPK) percent and Organic matter (OM). Due to lack of Iranian quality STANDARDs for MSW compost, it has been used European STANDARDs in the study. In six samples of MSW compost, characteristics of C/N, pH, EC, NPK and OM were varied 12-30, 6.95-7.45, 1830-2170 (?s/cm), 1.78-3.97 (%) and 23-55.5 (%) respectively. In addition, concentration of Cu, Zn and Pb for the mentioned samples were between 656-780, 994-1222 and 286 (mg/kg), respectively. However, for three enriched compost samples C/N, pH, EC, NPK, OM, Cu, Zn and Pb were between 19.5-28.7, 6.37-6.87, 1050-1250 (?s/cm), 1.35-2.07 (%), 15-35 (%), 287-309 (mg/kg), 513-612 (mg/kg) and 109-161 (mg/kg), respectively. Low C/N (especially in Tehran compost), high level of heavy metals (particularly Cu and Zn), Low NPK content and relatively high electrical conductivity are the most important reasons for poor quality of compost in Iran. In the studied parameters, only pH and organic matter (OM) have acceptable ranges. Therefore, the low quality of composts available in Iran market suggests an urgent need for establishing quality assurance procedures and also preparing COMPOST QUALITY STANDARDs in the country. Moreover, if the existing composting processes are modified, the COMPOST QUALITY will be better and thus demand for compost consumption will increase.

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APA: Copy

HEYDARZADEH, N., & ABDOLI, M.A.. (2009). QUALITY ASSESSMENT OF COMPOST IN IRAN AND THE NEED FOR STANDARDS AND QUALITY ASSURANCE. JOURNAL OF ENVIRONMENTAL STUDIES, 34(48), 29-40. SID. https://sid.ir/paper/2855/en

Vancouver: Copy

HEYDARZADEH N., ABDOLI M.A.. QUALITY ASSESSMENT OF COMPOST IN IRAN AND THE NEED FOR STANDARDS AND QUALITY ASSURANCE. JOURNAL OF ENVIRONMENTAL STUDIES[Internet]. 2009;34(48):29-40. Available from: https://sid.ir/paper/2855/en

IEEE: Copy

N. HEYDARZADEH, and M.A. ABDOLI, “QUALITY ASSESSMENT OF COMPOST IN IRAN AND THE NEED FOR STANDARDS AND QUALITY ASSURANCE,” JOURNAL OF ENVIRONMENTAL STUDIES, vol. 34, no. 48, pp. 29–40, 2009, [Online]. Available: https://sid.ir/paper/2855/en

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