| Title |
Anaerobic digestion performance of sweet potato vine and animal manure under wet, semi-dry, and dry conditions
|
|---|---|
| Published in |
AMB Express, March 2018
|
| DOI | 10.1186/s13568-018-0572-9 |
| Pubmed ID | |
| Authors |
Enlan Zhang, Jiajia Li, Keqiang Zhang, Feng Wang, Houhua Yang, Suli Zhi, Guangqing Liu |
| 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. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Germany | 1 | 50% |
| Unknown | 1 | 50% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 2 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 50 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 50 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 12 | 24% |
| Student > Ph. D. Student | 8 | 16% |
| Student > Doctoral Student | 6 | 12% |
| Student > Bachelor | 5 | 10% |
| Researcher | 4 | 8% |
| Other | 6 | 12% |
| Unknown | 9 | 18% |
| Readers by discipline | Count | As % |
|---|---|---|
| Energy | 11 | 22% |
| Engineering | 6 | 12% |
| Chemical Engineering | 5 | 10% |
| Biochemistry, Genetics and Molecular Biology | 4 | 8% |
| Environmental Science | 4 | 8% |
| Other | 9 | 18% |
| Unknown | 11 | 22% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 12 January 2019.
All research outputs
#17,934,709
of 23,028,364 outputs
Outputs from AMB Express
#739
of 1,241 outputs
Outputs of similar age
#241,589
of 332,500 outputs
Outputs of similar age from AMB Express
#34
of 63 outputs
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