Optimizing Methane Production from Anaerobic Digestion of Dairy Cow Manure: The Potential Use of Carica (Carica pubescens) Seeds as a Co-Substrate
A method to increase methane production in dairy cow manure (DCM) is to co-digest DCM with nutritious biomass. This study aimed to determine the methane yield during the anaerobic co-digestion of DCM and carica seeds meal (CSM). Four continuous stirred tank reactors were operated with treatments P0...
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| Format: | Article |
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IPB University
2025-01-01
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| Series: | Tropical Animal Science Journal |
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| Online Access: | https://journal.ipb.ac.id/index.php/tasj/article/view/56306 |
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| author | R. Purwasih M. Saindah H. Triyuwanti F. S. Yusuf A. Purnomoadi E. Purbowati S. Sutaryo |
| author_facet | R. Purwasih M. Saindah H. Triyuwanti F. S. Yusuf A. Purnomoadi E. Purbowati S. Sutaryo |
| author_sort | R. Purwasih |
| collection | DOAJ |
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A method to increase methane production in dairy cow manure (DCM) is to co-digest DCM with nutritious biomass. This study aimed to determine the methane yield during the anaerobic co-digestion of DCM and carica seeds meal (CSM). Four continuous stirred tank reactors were operated with treatments P0 (100% DCM), P1 (98% DCM and 2% CSM), P2 (96% DCM and 4% CSM), and P3 (94% DCM and 6% CSM). The results demonstrated that the presence of CSM as a co-substrate of DCM significantly increased (p<0.05) methane production. The average methane production resulting from P0, P1, P2, and P3 in units of mL/g substrate and mL/g volatile solid (VS)added were 10.05, 20.54, 32.26, and 19.29 mL/g substrate and 171.49, 278.96, 357.92 and 179.30 mL/g VSadded, respectively. Thus, the highest methane production was obtained at P2. Treatment P3 contained a substrate containing excessively high protein and organic content, negatively affecting anaerobic microorganisms’ activity. The presence of CSM as a co-substrate enhanced methane production by 91.94%–221.06% compared with the control. The presence of CSM as a co-substrate significantly increased (p<0.05) volatile fatty acid and total ammonia nitrogen (TAN) concentrations and the pH of digested slurries but did not affect VS reduction. The co-digestion of DCM and CSM must consider the proportion of organic material in the mixed substrate. In this study, the mixed substrate with a VS proportion of 51.68% was the best-mixed substrate.
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| format | Article |
| id | doaj-art-7822503733894e3e8bb8bd6b500af45b |
| institution | Kabale University |
| issn | 2615-787X 2615-790X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IPB University |
| record_format | Article |
| series | Tropical Animal Science Journal |
| spelling | doaj-art-7822503733894e3e8bb8bd6b500af45b2025-01-22T17:47:24ZengIPB UniversityTropical Animal Science Journal2615-787X2615-790X2025-01-0148110.5398/tasj.2025.48.1.37Optimizing Methane Production from Anaerobic Digestion of Dairy Cow Manure: The Potential Use of Carica (Carica pubescens) Seeds as a Co-SubstrateR. Purwasih0M. Saindah1H. Triyuwanti2F. S. Yusuf3A. Purnomoadi4E. Purbowati5S. Sutaryo6Department of Animal Science, Faculty of Animal and Agricultural Sciences, Diponegoro UniversityDepartment of Animal Science, Faculty of Animal and Agricultural Sciences, Diponegoro UniversityDepartment of Animal Science, Faculty of Animal and Agricultural Sciences, Diponegoro UniversityDepartment of Animal Science, Faculty of Animal and Agricultural Sciences, Diponegoro UniversityDepartment of Animal Science, Faculty of Animal and Agricultural Sciences, Diponegoro UniversityDepartment of Animal Science, Faculty of Animal and Agricultural Sciences, Diponegoro UniversityDepartment of Animal Science, Faculty of Animal and Agricultural Sciences, Diponegoro University A method to increase methane production in dairy cow manure (DCM) is to co-digest DCM with nutritious biomass. This study aimed to determine the methane yield during the anaerobic co-digestion of DCM and carica seeds meal (CSM). Four continuous stirred tank reactors were operated with treatments P0 (100% DCM), P1 (98% DCM and 2% CSM), P2 (96% DCM and 4% CSM), and P3 (94% DCM and 6% CSM). The results demonstrated that the presence of CSM as a co-substrate of DCM significantly increased (p<0.05) methane production. The average methane production resulting from P0, P1, P2, and P3 in units of mL/g substrate and mL/g volatile solid (VS)added were 10.05, 20.54, 32.26, and 19.29 mL/g substrate and 171.49, 278.96, 357.92 and 179.30 mL/g VSadded, respectively. Thus, the highest methane production was obtained at P2. Treatment P3 contained a substrate containing excessively high protein and organic content, negatively affecting anaerobic microorganisms’ activity. The presence of CSM as a co-substrate enhanced methane production by 91.94%–221.06% compared with the control. The presence of CSM as a co-substrate significantly increased (p<0.05) volatile fatty acid and total ammonia nitrogen (TAN) concentrations and the pH of digested slurries but did not affect VS reduction. The co-digestion of DCM and CSM must consider the proportion of organic material in the mixed substrate. In this study, the mixed substrate with a VS proportion of 51.68% was the best-mixed substrate. https://journal.ipb.ac.id/index.php/tasj/article/view/56306biogascarica seedsco-digestiondairy cow manuremethane |
| spellingShingle | R. Purwasih M. Saindah H. Triyuwanti F. S. Yusuf A. Purnomoadi E. Purbowati S. Sutaryo Optimizing Methane Production from Anaerobic Digestion of Dairy Cow Manure: The Potential Use of Carica (Carica pubescens) Seeds as a Co-Substrate Tropical Animal Science Journal biogas carica seeds co-digestion dairy cow manure methane |
| title | Optimizing Methane Production from Anaerobic Digestion of Dairy Cow Manure: The Potential Use of Carica (Carica pubescens) Seeds as a Co-Substrate |
| title_full | Optimizing Methane Production from Anaerobic Digestion of Dairy Cow Manure: The Potential Use of Carica (Carica pubescens) Seeds as a Co-Substrate |
| title_fullStr | Optimizing Methane Production from Anaerobic Digestion of Dairy Cow Manure: The Potential Use of Carica (Carica pubescens) Seeds as a Co-Substrate |
| title_full_unstemmed | Optimizing Methane Production from Anaerobic Digestion of Dairy Cow Manure: The Potential Use of Carica (Carica pubescens) Seeds as a Co-Substrate |
| title_short | Optimizing Methane Production from Anaerobic Digestion of Dairy Cow Manure: The Potential Use of Carica (Carica pubescens) Seeds as a Co-Substrate |
| title_sort | optimizing methane production from anaerobic digestion of dairy cow manure the potential use of carica carica pubescens seeds as a co substrate |
| topic | biogas carica seeds co-digestion dairy cow manure methane |
| url | https://journal.ipb.ac.id/index.php/tasj/article/view/56306 |
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