Volatile organic compounds conversion pathways and odor gas emission characteristics in chicken manure composting process
IntroductionComposting is a highly effective method for managing the growing quantity of agricultural waste, promoting nutrient recycling, and advancing sustainable agriculture. However, the significant amounts of volatile inorganic compounds (VICs) and volatile organic compounds (VOCs) generated du...
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| Format: | Article |
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Frontiers Media S.A.
2023-05-01
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| Series: | Frontiers in Ecology and Evolution |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fevo.2023.1192132/full |
| _version_ | 1827953512596635648 |
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| author | Yan Jiang Yanying Yao Haolang Liu Shengmin Zhang Xin Bai Xiulan Ma Yujun Wang Qibiao Ren |
| author_facet | Yan Jiang Yanying Yao Haolang Liu Shengmin Zhang Xin Bai Xiulan Ma Yujun Wang Qibiao Ren |
| author_sort | Yan Jiang |
| collection | DOAJ |
| description | IntroductionComposting is a highly effective method for managing the growing quantity of agricultural waste, promoting nutrient recycling, and advancing sustainable agriculture. However, the significant amounts of volatile inorganic compounds (VICs) and volatile organic compounds (VOCs) generated during the composting process cannot be ignored due to their serious ecological environmental hazards and detrimental impact on human health. The types and pathways of VICs and VOCs produced during the composting process remain not well understood.MethodsIn this study, we investigated the VOCs produced during chicken manure and straw composting using gas chromatography–mass spectrometry (GC/MS). We performed qualitative and quantitative analyses of VOCs in composting emissions gases and their correlation with odor.ResultsOur results showed that 44 VOCs were detected during composting, including 4 oxidation-containing compounds, 2 sulfur-containing organics, 5 alkanes, 19 halogenated compounds, and 14 aromatic compounds. Aromatic compounds were found to be the main component of VOCs, accounting for 59.14% of the total content. The highest VOC content was found in the pre-composting period, and the highest emitting VOC was p-Isopropyl Toluene, which reached 7870.50 μg/m3. We identified eight substances that were highly correlated with odor concentration (p < 0.01) and are the main odor-causing substances that need to be monitored and controlled.DiscussionOur study provides important insights into the transformation of volatile gases during the composting process. It highlights the need for proper management practices to control VOCs emissions and reduce their environmental impact. |
| first_indexed | 2024-04-09T14:15:18Z |
| format | Article |
| id | doaj.art-805281d0916147daa79c25fd695739bd |
| institution | Directory Open Access Journal |
| issn | 2296-701X |
| language | English |
| last_indexed | 2024-04-09T14:15:18Z |
| publishDate | 2023-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Ecology and Evolution |
| spelling | doaj.art-805281d0916147daa79c25fd695739bd2023-05-05T13:13:22ZengFrontiers Media S.A.Frontiers in Ecology and Evolution2296-701X2023-05-011110.3389/fevo.2023.11921321192132Volatile organic compounds conversion pathways and odor gas emission characteristics in chicken manure composting processYan Jiang0Yanying Yao1Haolang Liu2Shengmin Zhang3Xin Bai4Xiulan Ma5Yujun Wang6Qibiao Ren7College of Resources and Environment, Jilin Agricultural University, Changchun, ChinaGeneral Station of Agricultural Environmental Protection and Rural Energy Management of Jilin Province, Changchun, ChinaKey Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, ChinaCollege of Resources and Environment, Jilin Agricultural University, Changchun, ChinaCollege of Resources and Environment, Jilin Agricultural University, Changchun, ChinaCollege of Resources and Environment, Jilin Agricultural University, Changchun, ChinaCollege of Resources and Environment, Jilin Agricultural University, Changchun, ChinaGeneral Station of Agricultural Environmental Protection and Rural Energy Management of Jilin Province, Changchun, ChinaIntroductionComposting is a highly effective method for managing the growing quantity of agricultural waste, promoting nutrient recycling, and advancing sustainable agriculture. However, the significant amounts of volatile inorganic compounds (VICs) and volatile organic compounds (VOCs) generated during the composting process cannot be ignored due to their serious ecological environmental hazards and detrimental impact on human health. The types and pathways of VICs and VOCs produced during the composting process remain not well understood.MethodsIn this study, we investigated the VOCs produced during chicken manure and straw composting using gas chromatography–mass spectrometry (GC/MS). We performed qualitative and quantitative analyses of VOCs in composting emissions gases and their correlation with odor.ResultsOur results showed that 44 VOCs were detected during composting, including 4 oxidation-containing compounds, 2 sulfur-containing organics, 5 alkanes, 19 halogenated compounds, and 14 aromatic compounds. Aromatic compounds were found to be the main component of VOCs, accounting for 59.14% of the total content. The highest VOC content was found in the pre-composting period, and the highest emitting VOC was p-Isopropyl Toluene, which reached 7870.50 μg/m3. We identified eight substances that were highly correlated with odor concentration (p < 0.01) and are the main odor-causing substances that need to be monitored and controlled.DiscussionOur study provides important insights into the transformation of volatile gases during the composting process. It highlights the need for proper management practices to control VOCs emissions and reduce their environmental impact.https://www.frontiersin.org/articles/10.3389/fevo.2023.1192132/fullcompostingvolatile inorganic compoundsvolatile organic compoundsemission characteristicstransformation pathway |
| spellingShingle | Yan Jiang Yanying Yao Haolang Liu Shengmin Zhang Xin Bai Xiulan Ma Yujun Wang Qibiao Ren Volatile organic compounds conversion pathways and odor gas emission characteristics in chicken manure composting process Frontiers in Ecology and Evolution composting volatile inorganic compounds volatile organic compounds emission characteristics transformation pathway |
| title | Volatile organic compounds conversion pathways and odor gas emission characteristics in chicken manure composting process |
| title_full | Volatile organic compounds conversion pathways and odor gas emission characteristics in chicken manure composting process |
| title_fullStr | Volatile organic compounds conversion pathways and odor gas emission characteristics in chicken manure composting process |
| title_full_unstemmed | Volatile organic compounds conversion pathways and odor gas emission characteristics in chicken manure composting process |
| title_short | Volatile organic compounds conversion pathways and odor gas emission characteristics in chicken manure composting process |
| title_sort | volatile organic compounds conversion pathways and odor gas emission characteristics in chicken manure composting process |
| topic | composting volatile inorganic compounds volatile organic compounds emission characteristics transformation pathway |
| url | https://www.frontiersin.org/articles/10.3389/fevo.2023.1192132/full |
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