Evaluation of stability and maturity indices during composting process from a mixture of poultry waste and sawdust by windrow method
Background and Objective: It is important to determine the quality of the compost to use compost properly. The aim of this study was to determine the effect of mixing ratio of bulking agent on stability and maturity indices in poultry waste compost. Materials and Methods: Two piles of sawdust mixtur...
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| Format: | Article |
| Language: | fas |
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Tehran University of Medical Sciences
2022-04-01
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| Series: | سلامت و محیط |
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| Online Access: | http://ijhe.tums.ac.ir/article-1-6631-en.html |
| _version_ | 1818214124672253952 |
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| author | Asghar Yavari Mehdi Moradi Nazar Seyedeh Maryam Sharafi Amir Hossein Nafez Meghdad Pirsaheb |
| author_facet | Asghar Yavari Mehdi Moradi Nazar Seyedeh Maryam Sharafi Amir Hossein Nafez Meghdad Pirsaheb |
| author_sort | Asghar Yavari |
| collection | DOAJ |
| description | Background and Objective: It is important to determine the quality of the compost to use compost properly. The aim of this study was to determine the effect of mixing ratio of bulking agent on stability and maturity indices in poultry waste compost.
Materials and Methods: Two piles of sawdust mixture with poultry wastes and volume ratios of 1:1 (W1) and 2:1 (W2) were prepared by Windrow method and a pile containing poultry manure was used as control (W0). In order to determine the stability and maturity indices in compost, the most important physicochemical and biological parameters were studied.
Results: The thermophilic phase lasted about 7 weeks for W1 and about 4 weeks for W2. The initial C/N ratios in the W0, W1 and W2 were 27.10, 31.40 and 56.24, respectively, which eventually reached less than 20. The reduction of organic matter in the three piles was 8.30%, 62.59% and 85.53%, respectively. The thermophilic phase caused a sharp decrease in the population of indicator and pathogenic microorganisms in all piles. The highest dehydrogenase activity in W1 pile was 2.95 mgTPF/gDW.h and by decreasing temperature until the last day, its value decreased to 0.29 mgTPF/gDW.h.
Conclusion: The best ratio for mixing sawdust with poultry manure was 1:1 (v:v). Microbial and enzymatic activities are useful parameters for monitoring poultry composting process and determining the rate of compost stability, and the use of this compost in agriculture will improve soil quality. |
| first_indexed | 2024-12-12T06:15:12Z |
| format | Article |
| id | doaj.art-bfca1b0c5d7b4c4491f26e34d1c39e16 |
| institution | Directory Open Access Journal |
| issn | 2008-2029 2008-3718 |
| language | fas |
| last_indexed | 2024-12-12T06:15:12Z |
| publishDate | 2022-04-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | سلامت و محیط |
| spelling | doaj.art-bfca1b0c5d7b4c4491f26e34d1c39e162022-12-22T00:35:02ZfasTehran University of Medical Sciencesسلامت و محیط2008-20292008-37182022-04-01151116Evaluation of stability and maturity indices during composting process from a mixture of poultry waste and sawdust by windrow methodAsghar Yavari0Mehdi Moradi Nazar1Seyedeh Maryam Sharafi2Amir Hossein Nafez3Meghdad Pirsaheb4 Research Center for Environmental Determinants of Health (RCEDH), Health Institute, School of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran Research Center for Environmental Determinants of Health (RCEDH), Health Institute, School of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Diseases, Isfahan University of Medical Sciences, Isfahan, Iran Research Center for Environmental Determinants of Health (RCEDH), Health Institute, School of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran AND Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Diseases, Isfahan University of Medical Sciences, Isfahan, Iran AND Department of Environmental Health Engineering, Faculty of Health, Isfahan University of Medical Sciences, Isfahan, Iran Research Center for Environmental Determinants of Health (RCEDH), Health Institute, School of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran Background and Objective: It is important to determine the quality of the compost to use compost properly. The aim of this study was to determine the effect of mixing ratio of bulking agent on stability and maturity indices in poultry waste compost. Materials and Methods: Two piles of sawdust mixture with poultry wastes and volume ratios of 1:1 (W1) and 2:1 (W2) were prepared by Windrow method and a pile containing poultry manure was used as control (W0). In order to determine the stability and maturity indices in compost, the most important physicochemical and biological parameters were studied. Results: The thermophilic phase lasted about 7 weeks for W1 and about 4 weeks for W2. The initial C/N ratios in the W0, W1 and W2 were 27.10, 31.40 and 56.24, respectively, which eventually reached less than 20. The reduction of organic matter in the three piles was 8.30%, 62.59% and 85.53%, respectively. The thermophilic phase caused a sharp decrease in the population of indicator and pathogenic microorganisms in all piles. The highest dehydrogenase activity in W1 pile was 2.95 mgTPF/gDW.h and by decreasing temperature until the last day, its value decreased to 0.29 mgTPF/gDW.h. Conclusion: The best ratio for mixing sawdust with poultry manure was 1:1 (v:v). Microbial and enzymatic activities are useful parameters for monitoring poultry composting process and determining the rate of compost stability, and the use of this compost in agriculture will improve soil quality.http://ijhe.tums.ac.ir/article-1-6631-en.htmlcompostingwindrow methodpoultry wastesawduststability indices |
| spellingShingle | Asghar Yavari Mehdi Moradi Nazar Seyedeh Maryam Sharafi Amir Hossein Nafez Meghdad Pirsaheb Evaluation of stability and maturity indices during composting process from a mixture of poultry waste and sawdust by windrow method سلامت و محیط composting windrow method poultry waste sawdust stability indices |
| title | Evaluation of stability and maturity indices during composting process from a mixture of poultry waste and sawdust by windrow method |
| title_full | Evaluation of stability and maturity indices during composting process from a mixture of poultry waste and sawdust by windrow method |
| title_fullStr | Evaluation of stability and maturity indices during composting process from a mixture of poultry waste and sawdust by windrow method |
| title_full_unstemmed | Evaluation of stability and maturity indices during composting process from a mixture of poultry waste and sawdust by windrow method |
| title_short | Evaluation of stability and maturity indices during composting process from a mixture of poultry waste and sawdust by windrow method |
| title_sort | evaluation of stability and maturity indices during composting process from a mixture of poultry waste and sawdust by windrow method |
| topic | composting windrow method poultry waste sawdust stability indices |
| url | http://ijhe.tums.ac.ir/article-1-6631-en.html |
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