Methane reductions with gypsum and SOP® lagoon additives in liquid manure
The agriculture industry is an important source of greenhouse gas emissions globally with livestock production being a main contributor. Therefore, there is a need to reduce methane (CH4) emissions from livestock production, including liquid manure storages. Using an additive that decreases methanog...
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Frontiers Media S.A.
2025-08-01
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| Series: | Frontiers in Climate |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fclim.2025.1592677/full |
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| author | Chelsea Sauvé Chelsea Sauvé Hambaliou Baldé Rajinikanth Rajagopal Andrew VanderZaag |
| author_facet | Chelsea Sauvé Chelsea Sauvé Hambaliou Baldé Rajinikanth Rajagopal Andrew VanderZaag |
| author_sort | Chelsea Sauvé |
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| description | The agriculture industry is an important source of greenhouse gas emissions globally with livestock production being a main contributor. Therefore, there is a need to reduce methane (CH4) emissions from livestock production, including liquid manure storages. Using an additive that decreases methanogenesis is one approach currently being considered. This study tests two additives: SOP® Lagoon (a commercial additive) and a commonly used, local fertilizer, gypsum. The objective was to determine the capability of the two products to reduce CH4 emissions. Tests were done at 24°C in the laboratory with multiple rates of the additives (100, 1,000, 5,000 and 10,000 g/m3). Methane produced by untreated dairy manure (control) was compared to manure with addition of gypsum or SOP® Lagoon over 162 days. Results showed that peak CH4 reduction occurred between 20 and 30 days, then declined. The lowest dose of both additives (100 g/m3) did not significantly reduce CH4 over the duration of the study. Efficacy increased non-linearly with an increasing dose up to 5,000 g/m3. After 30 days, CH4 reduction decreased by 32, 73, 74% for SOP® Lagoon rates 1,000, 5,000, 10,000 g/m3, and 20, 60, and 63% for gypsum. Both SOP® Lagoon and local gypsum showed similar reduction in methane emissions at similar application rates. This is an indication that farmers can confidently use locally sourced gypsum, a low-cost alternative to the commercial additive, without affecting the overall mitigation potential. |
| format | Article |
| id | doaj-art-97f3fcb3b96a4095aed8a4ca15d865d6 |
| institution | Kabale University |
| issn | 2624-9553 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Climate |
| spelling | doaj-art-97f3fcb3b96a4095aed8a4ca15d865d62025-08-21T05:27:34ZengFrontiers Media S.A.Frontiers in Climate2624-95532025-08-01710.3389/fclim.2025.15926771592677Methane reductions with gypsum and SOP® lagoon additives in liquid manureChelsea Sauvé0Chelsea Sauvé1Hambaliou Baldé2Rajinikanth Rajagopal3Andrew VanderZaag4Agriculture and Agri-Food Canada, ACGEO/AER/Ottawa Research and Development Centre, Ottawa, ON, CanadaSchool of Environmental Sciences, University of Guelph, Guelph, ON, CanadaAgriculture and Agri-Food Canada, ACGEO/AER/Ottawa Research and Development Centre, Ottawa, ON, CanadaAgriculture and Agri-Food Canada, Sherbrooke Research and Development Centre, Sherbrooke, QC, CanadaAgriculture and Agri-Food Canada, ACGEO/AER/Ottawa Research and Development Centre, Ottawa, ON, CanadaThe agriculture industry is an important source of greenhouse gas emissions globally with livestock production being a main contributor. Therefore, there is a need to reduce methane (CH4) emissions from livestock production, including liquid manure storages. Using an additive that decreases methanogenesis is one approach currently being considered. This study tests two additives: SOP® Lagoon (a commercial additive) and a commonly used, local fertilizer, gypsum. The objective was to determine the capability of the two products to reduce CH4 emissions. Tests were done at 24°C in the laboratory with multiple rates of the additives (100, 1,000, 5,000 and 10,000 g/m3). Methane produced by untreated dairy manure (control) was compared to manure with addition of gypsum or SOP® Lagoon over 162 days. Results showed that peak CH4 reduction occurred between 20 and 30 days, then declined. The lowest dose of both additives (100 g/m3) did not significantly reduce CH4 over the duration of the study. Efficacy increased non-linearly with an increasing dose up to 5,000 g/m3. After 30 days, CH4 reduction decreased by 32, 73, 74% for SOP® Lagoon rates 1,000, 5,000, 10,000 g/m3, and 20, 60, and 63% for gypsum. Both SOP® Lagoon and local gypsum showed similar reduction in methane emissions at similar application rates. This is an indication that farmers can confidently use locally sourced gypsum, a low-cost alternative to the commercial additive, without affecting the overall mitigation potential.https://www.frontiersin.org/articles/10.3389/fclim.2025.1592677/fullmethanemethane mitigationsulfatedairy slurry storageanimal agriculture |
| spellingShingle | Chelsea Sauvé Chelsea Sauvé Hambaliou Baldé Rajinikanth Rajagopal Andrew VanderZaag Methane reductions with gypsum and SOP® lagoon additives in liquid manure Frontiers in Climate methane methane mitigation sulfate dairy slurry storage animal agriculture |
| title | Methane reductions with gypsum and SOP® lagoon additives in liquid manure |
| title_full | Methane reductions with gypsum and SOP® lagoon additives in liquid manure |
| title_fullStr | Methane reductions with gypsum and SOP® lagoon additives in liquid manure |
| title_full_unstemmed | Methane reductions with gypsum and SOP® lagoon additives in liquid manure |
| title_short | Methane reductions with gypsum and SOP® lagoon additives in liquid manure |
| title_sort | methane reductions with gypsum and sop r lagoon additives in liquid manure |
| topic | methane methane mitigation sulfate dairy slurry storage animal agriculture |
| url | https://www.frontiersin.org/articles/10.3389/fclim.2025.1592677/full |
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