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https://doi.org/10.1016/j.apenergy.2016.10.116
Title: | Three-stage anaerobic digester for food waste | Authors: | Zhang, J Loh, KC Li, W Lim, JW Dai, Y Tong, YW |
Issue Date: | 15-May-2017 | Publisher: | Elsevier BV | Citation: | Zhang, J, Loh, KC, Li, W, Lim, JW, Dai, Y, Tong, YW (2017-05-15). Three-stage anaerobic digester for food waste. Applied Energy 194 : 287-295. ScholarBank@NUS Repository. https://doi.org/10.1016/j.apenergy.2016.10.116 | Abstract: | © 2016 Elsevier Ltd A novel compact three-stage anaerobic digester (TSAD) was developed for high-efficiency anaerobic digestion of food waste and methane production. Through structure optimization by having three separate chambers in a single-stage anaerobic digester, hydrolysis, acidogenesis and methanogenesis were independently optimized with concomitant improvement in anaerobic digestion performance. Compared to traditional one-stage and two-stage anaerobic digesters, TSAD had a 24–54% higher methane yield at a high organic loading rate of 10 g VSFW/L. A higher volatile solid reduction rate of 83.5 ± 1.3% was also achieved in TSAD. Even at high organic loading, TSAD still presented a high buffering ability when the one-stage and two-stage digesters had already soured and failed. Pyrosequencing analysis indicated that the bacterial community in TSAD is more diverse than the control digesters. Multi-function methanogens Methanosarcina and some dominant populations with the function of acetogenesis, amino-acid-utilization and symbiosis were found to selectively enrich in TSAD. | Source Title: | Applied Energy | URI: | https://scholarbank.nus.edu.sg/handle/10635/155054 | ISSN: | 0306-2619 | DOI: | 10.1016/j.apenergy.2016.10.116 |
Appears in Collections: | Staff Publications Elements |
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