LAPSE:2023.26173
Published Article
LAPSE:2023.26173
Synergistic Co-Digestion of Microalgae and Primary Sludge to Enhance Methane Yield from Temperature-Phased Anaerobic Digestion
Mekdimu Mezemir Damtie, Jingyeong Shin, Hyun Min Jang, Young Mo Kim
March 31, 2023
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 °C and HRT = 2 days) and an 8.3% increase was obtained from the anaerobic pretreated substrate (55 °C and HRT = 3 days). Moreover, no synergistic effects on methane yields were observed in co-digesting the substrate pretreated with high temperature (85 °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.
Keywords
anaerobic digestion, biological pretreatment, co-digestion, methane yield, microalgae, primary sludge
Suggested Citation
Damtie MM, Shin J, Jang HM, Kim YM. Synergistic Co-Digestion of Microalgae and Primary Sludge to Enhance Methane Yield from Temperature-Phased Anaerobic Digestion. (2023). LAPSE:2023.26173
Author Affiliations
Damtie MM: Department of Civil and Environmental Engineering, Hanyang University, Seongdong-gu, Seoul 04763, Korea [ORCID]
Shin J: Department of Civil and Environmental Engineering, Hanyang University, Seongdong-gu, Seoul 04763, Korea
Jang HM: Department of Environmental Engineering and Soil Environment Research Center, Jeonbuk National University, Jeonju, Jeollabukdo 54896, Korea
Kim YM: Department of Civil and Environmental Engineering, Hanyang University, Seongdong-gu, Seoul 04763, Korea
Journal Name
Energies
Volume
13
Issue
17
Article Number
E4547
Year
2020
Publication Date
2020-09-02
Published Version
ISSN
1996-1073
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PII: en13174547, Publication Type: Journal Article
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LAPSE:2023.26173
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doi:10.3390/en13174547
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Mar 31, 2023
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