Effects of Superphosphate on Greenhouse Gas Emissions and Compost Quality During Industrial Scale In-Vessel Swine Manure Composting
Composting is an environmentally friendly method for transforming the nutrients present in livestock manure into organic fertilizer. In this study, the compost quality-enhancing and N<sub>2</sub>O and CH<sub>4</sub> emissions-reducing effects of superphosphate were investigat...
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MDPI AG
2025-01-01
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| Series: | Agriculture |
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| author | Haotian Chen Haoruo Li Tianqing Sun Xin Huang Yuyi Li Baoli Zhang |
| author_facet | Haotian Chen Haoruo Li Tianqing Sun Xin Huang Yuyi Li Baoli Zhang |
| author_sort | Haotian Chen |
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| description | Composting is an environmentally friendly method for transforming the nutrients present in livestock manure into organic fertilizer. In this study, the compost quality-enhancing and N<sub>2</sub>O and CH<sub>4</sub> emissions-reducing effects of superphosphate were investigated during industrial-scale in-vessel composting of swine manure. Alongside a control group, three different doses of superphosphate were tested: 5% (SSP5), 10% (SSP10), and 15% (SSP15). The results revealed that the superphosphate reduced the N<sub>2</sub>O and CH<sub>4</sub> emissions by 18.5–26.3% and 15.8–25.1%, respectively. In addition, the superphosphate enhanced both the N and P contents of the compost. However, it had an adverse impact on compost maturity, with the SSP15 dose showing the lowest germination index (GI) at 70.4% and the highest electrical conductivity (EC) at 9.04 mS·cm<sup>−1</sup>. These findings suggest that superphosphate has potential for greenhouse gas mitigation and nutrient augmentation in industrial composting. Although the economic benefits of superphosphate addition for GHG reduction are limited, the technology holds considerable economic potential for nitrogen conservation. Further investigations should focus on combining superphosphate addition with other improvements, considering both compost quality and economic viability. |
| format | Article |
| id | doaj-art-8317f66aa6314a8fb82422e9b2089f34 |
| institution | Kabale University |
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| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Agriculture |
| spelling | doaj-art-8317f66aa6314a8fb82422e9b2089f342025-01-24T13:15:54ZengMDPI AGAgriculture2077-04722025-01-0115214810.3390/agriculture15020148Effects of Superphosphate on Greenhouse Gas Emissions and Compost Quality During Industrial Scale In-Vessel Swine Manure CompostingHaotian Chen0Haoruo Li1Tianqing Sun2Xin Huang3Yuyi Li4Baoli Zhang5Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Key Laboratory of Crop Physiology and Ecology, Ministry of Agriculture and Rural Affairs of China, Beijing 100081, ChinaInstitute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaChina Certification & Accreditation Institute, Beijing 100020, ChinaTechnical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, ChinaInstitute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, ChinaCollege of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, ChinaComposting is an environmentally friendly method for transforming the nutrients present in livestock manure into organic fertilizer. In this study, the compost quality-enhancing and N<sub>2</sub>O and CH<sub>4</sub> emissions-reducing effects of superphosphate were investigated during industrial-scale in-vessel composting of swine manure. Alongside a control group, three different doses of superphosphate were tested: 5% (SSP5), 10% (SSP10), and 15% (SSP15). The results revealed that the superphosphate reduced the N<sub>2</sub>O and CH<sub>4</sub> emissions by 18.5–26.3% and 15.8–25.1%, respectively. In addition, the superphosphate enhanced both the N and P contents of the compost. However, it had an adverse impact on compost maturity, with the SSP15 dose showing the lowest germination index (GI) at 70.4% and the highest electrical conductivity (EC) at 9.04 mS·cm<sup>−1</sup>. These findings suggest that superphosphate has potential for greenhouse gas mitigation and nutrient augmentation in industrial composting. Although the economic benefits of superphosphate addition for GHG reduction are limited, the technology holds considerable economic potential for nitrogen conservation. Further investigations should focus on combining superphosphate addition with other improvements, considering both compost quality and economic viability.https://www.mdpi.com/2077-0472/15/2/148swine manurecompostingGHG emissionindustrial scalesuperphosphate |
| spellingShingle | Haotian Chen Haoruo Li Tianqing Sun Xin Huang Yuyi Li Baoli Zhang Effects of Superphosphate on Greenhouse Gas Emissions and Compost Quality During Industrial Scale In-Vessel Swine Manure Composting Agriculture swine manure composting GHG emission industrial scale superphosphate |
| title | Effects of Superphosphate on Greenhouse Gas Emissions and Compost Quality During Industrial Scale In-Vessel Swine Manure Composting |
| title_full | Effects of Superphosphate on Greenhouse Gas Emissions and Compost Quality During Industrial Scale In-Vessel Swine Manure Composting |
| title_fullStr | Effects of Superphosphate on Greenhouse Gas Emissions and Compost Quality During Industrial Scale In-Vessel Swine Manure Composting |
| title_full_unstemmed | Effects of Superphosphate on Greenhouse Gas Emissions and Compost Quality During Industrial Scale In-Vessel Swine Manure Composting |
| title_short | Effects of Superphosphate on Greenhouse Gas Emissions and Compost Quality During Industrial Scale In-Vessel Swine Manure Composting |
| title_sort | effects of superphosphate on greenhouse gas emissions and compost quality during industrial scale in vessel swine manure composting |
| topic | swine manure composting GHG emission industrial scale superphosphate |
| url | https://www.mdpi.com/2077-0472/15/2/148 |
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