Synergistic Co-digestion of microalgae and primary sludge to enhance methane yield from temperature-phased anaerobic digestion
- Title
- Synergistic Co-digestion of microalgae and primary sludge to enhance methane yield from temperature-phased anaerobic digestion
- Author
- 김영모
- Keywords
- anaerobic digestion; co-digestion; microalgae; primary sludge; biological pretreatment; methane yield
- Issue Date
- 2020-09
- Publisher
- MDPI
- Citation
- ENERGIES, v. 13, no. 17, article no. 4547
- Abstract
- A two-stage temperature-phased mesophilic anaerobic digestion assay was carried out to study the interaction between various biological pretreatment conditions and the possible synergistic co-digestion of microalgae and primary sludge. The study of growth kinetics of the biochemical methane potential test revealed that a maximum of 36% increase in methane yield was observed from co-digestion of a substrate pretreated by thermophilic aerobic conditions (55 degrees C and HRT = 2 days) and an 8.3% increase was obtained from the anaerobic pretreated substrate (55 degrees C and HRT = 3 days). Moreover, no synergistic effects on methane yields were observed in co-digesting the substrate pretreated with high temperature (85 degrees C). The study also identified specific conditions in which interaction between biological pretreatment and co-digestion might substantially reduce methane yield. Careful optimization of operating conditions, both aerobic and anaerobic pretreatment at moderate thermophilic conditions, can be used as a biological pretreatment to enhance methane yield from the co-digestion of microalgae and primary sludge.
- URI
- https://www.mdpi.com/1996-1073/13/17/4547https://repository.hanyang.ac.kr/handle/20.500.11754/170880
- ISSN
- 1996-1073
- DOI
- 10.3390/en13174547
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
- Files in This Item:
- Synergistic Co-digestion of microalgae and primary sludge to enhance methane yield from temperature-phased anaerobic digestion.pdfDownload
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