Anaerobic digestion performance of sweet potato vine and animal manure under wet, semi-dry, and dry conditions
Abstract Sweet potato vine (SPV) is an abundant agricultural waste, which is easy to obtain at low cost and has the potential to produce clean energy via anaerobic digestion (AD). The main objectives of this study were to reveal methane production and process stability of SPV and the mixtures with a...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-03-01
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| Series: | AMB Express |
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| Online Access: | http://link.springer.com/article/10.1186/s13568-018-0572-9 |
| _version_ | 1818946782662492160 |
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| author | Enlan Zhang Jiajia Li Keqiang Zhang Feng Wang Houhua Yang Suli Zhi Guangqing Liu |
| author_facet | Enlan Zhang Jiajia Li Keqiang Zhang Feng Wang Houhua Yang Suli Zhi Guangqing Liu |
| author_sort | Enlan Zhang |
| collection | DOAJ |
| description | Abstract Sweet potato vine (SPV) is an abundant agricultural waste, which is easy to obtain at low cost and has the potential to produce clean energy via anaerobic digestion (AD). The main objectives of this study were to reveal methane production and process stability of SPV and the mixtures with animal manure under various total solid conditions, to verify synergetic effect in co-digestion of SPV and manure in AD systems, and to determine the kinetics characteristics during the full AD process. The results showed that SPV was desirable feedstock for AD with 200.22 mL/g VSadded of methane yield in wet anaerobic digestion and 12.20 Lmethane/Lworking volume in dry anaerobic digestion (D-AD). Synergistic effects were found in semi-dry anaerobic digestion and D-AD with each two mixing feedstock. In contrast with SPV mono-digestion, co-digestion with manure increased methane yield within the range of 14.34–49.11% in different AD digesters. The values of final volatile fatty acids to total alkalinity (TA) were below 0.4 and the values of final pH were within the range of 7.4–8.2 in all the reactors, which supported a positive relationship between carbohydrate hydrolysis and methanogenesis during AD process. The mathematical modified first order model was applied to estimate substrate biodegradability and methane production potential well with conversion constant ranged from 0.0003 to 0.0953 1/day, which indicated that co-digestion increased hydrolysis efficiency and metabolic activity. This work provides useful information to improve the utilization and stability of digestion using SPV and livestock or poultry manure as substrates. |
| first_indexed | 2024-12-20T08:20:29Z |
| format | Article |
| id | doaj.art-00e5d05060634a3ea4072aa0dacbb00f |
| institution | Directory Open Access Journal |
| issn | 2191-0855 |
| language | English |
| last_indexed | 2024-12-20T08:20:29Z |
| publishDate | 2018-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | AMB Express |
| spelling | doaj.art-00e5d05060634a3ea4072aa0dacbb00f2022-12-21T19:47:02ZengSpringerOpenAMB Express2191-08552018-03-018111010.1186/s13568-018-0572-9Anaerobic digestion performance of sweet potato vine and animal manure under wet, semi-dry, and dry conditionsEnlan Zhang0Jiajia Li1Keqiang Zhang2Feng Wang3Houhua Yang4Suli Zhi5Guangqing Liu6Biomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical TechnologyInnovation Team of Animal Husbandry Pollution Prevention and Control, Agro-Environmental Protection Institute, Chinese Academy of Agricultural SciencesInnovation Team of Animal Husbandry Pollution Prevention and Control, Agro-Environmental Protection Institute, Chinese Academy of Agricultural SciencesInnovation Team of Animal Husbandry Pollution Prevention and Control, Agro-Environmental Protection Institute, Chinese Academy of Agricultural SciencesInnovation Team of Animal Husbandry Pollution Prevention and Control, Agro-Environmental Protection Institute, Chinese Academy of Agricultural SciencesInnovation Team of Animal Husbandry Pollution Prevention and Control, Agro-Environmental Protection Institute, Chinese Academy of Agricultural SciencesBiomass Energy and Environmental Engineering Research Center, College of Chemical Engineering, Beijing University of Chemical TechnologyAbstract Sweet potato vine (SPV) is an abundant agricultural waste, which is easy to obtain at low cost and has the potential to produce clean energy via anaerobic digestion (AD). The main objectives of this study were to reveal methane production and process stability of SPV and the mixtures with animal manure under various total solid conditions, to verify synergetic effect in co-digestion of SPV and manure in AD systems, and to determine the kinetics characteristics during the full AD process. The results showed that SPV was desirable feedstock for AD with 200.22 mL/g VSadded of methane yield in wet anaerobic digestion and 12.20 Lmethane/Lworking volume in dry anaerobic digestion (D-AD). Synergistic effects were found in semi-dry anaerobic digestion and D-AD with each two mixing feedstock. In contrast with SPV mono-digestion, co-digestion with manure increased methane yield within the range of 14.34–49.11% in different AD digesters. The values of final volatile fatty acids to total alkalinity (TA) were below 0.4 and the values of final pH were within the range of 7.4–8.2 in all the reactors, which supported a positive relationship between carbohydrate hydrolysis and methanogenesis during AD process. The mathematical modified first order model was applied to estimate substrate biodegradability and methane production potential well with conversion constant ranged from 0.0003 to 0.0953 1/day, which indicated that co-digestion increased hydrolysis efficiency and metabolic activity. This work provides useful information to improve the utilization and stability of digestion using SPV and livestock or poultry manure as substrates.http://link.springer.com/article/10.1186/s13568-018-0572-9Sweet potato vineAnimal manureTotal solidCo-digestionProcess stability |
| spellingShingle | Enlan Zhang Jiajia Li Keqiang Zhang Feng Wang Houhua Yang Suli Zhi Guangqing Liu Anaerobic digestion performance of sweet potato vine and animal manure under wet, semi-dry, and dry conditions AMB Express Sweet potato vine Animal manure Total solid Co-digestion Process stability |
| title | Anaerobic digestion performance of sweet potato vine and animal manure under wet, semi-dry, and dry conditions |
| title_full | Anaerobic digestion performance of sweet potato vine and animal manure under wet, semi-dry, and dry conditions |
| title_fullStr | Anaerobic digestion performance of sweet potato vine and animal manure under wet, semi-dry, and dry conditions |
| title_full_unstemmed | Anaerobic digestion performance of sweet potato vine and animal manure under wet, semi-dry, and dry conditions |
| title_short | Anaerobic digestion performance of sweet potato vine and animal manure under wet, semi-dry, and dry conditions |
| title_sort | anaerobic digestion performance of sweet potato vine and animal manure under wet semi dry and dry conditions |
| topic | Sweet potato vine Animal manure Total solid Co-digestion Process stability |
| url | http://link.springer.com/article/10.1186/s13568-018-0572-9 |
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