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Article | Industrial and Domestic Waste Management | Volume 2 - Issue 1 - 2022 | 17-29 | https://doi.org/10.53623/idwm.v2i1.80
© 2022 by the author(s), and is licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0) License Creative Commons Attribution 4.0 International (CC BY 4.0) License

Effect of Substrate-to-Inoculum Ratio and Temperatures During the Start-up of Anaerobic Digestion of Fish Waste

Author(s): Arma Yulisa 1 ORCID https://orcid.org/0000-0003-4943-0696 , Chayanee Chairattanawat 1 , Sang Hyeok Park 1 ORCID https://orcid.org/0000-0002-9450-2639 , Md Abu Hanifa Jannat 1 , Seokhwan Hwang 1 , 2 ,
Author(s) information:
1 Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Pohang, Gyeongbuk 37673, Republic of Korea.
2 Institute for Convergence Research and Education in Advanced Technology (I-CREATE), Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea.

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Industrial and Domestic Waste Management

Volume 2 - Issue 1 - 2022

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The high protein and lipid content of fish waste makes mono-digestion a difficult bioprocess for an anaerobic digestion (AD) system. On the other hand, the massive increase in fish and seafood consumption worldwide has led to an inevitable fish waste mono-AD. Therefore, this study was conducted to investigate the effects of food-to-microorganisms (F/M) ratios and temperatures during the start-up period of fish waste mono-digestion. F/M ratios of 0.5, 1, 2, and 3 on a g-COD/g-VSS basis were operated at 35°C and 45°C, representing mesophilic and hyper-mesophilic conditions, respectively. The increase in F/M ratio improved the maximum methane (CH4) production rate at both temperatures. However, F/M ratio of 0.5 generated the highest CH4 yield in mesophilic and hyper-mesophilic conditions (0.23±0.00 L-CH4/g-CODinput). Further increase in F/M ratio decreased CH4 yield up to 21.74% and 39.13% when the reactors were operated at 35°C and 45°C, respectively. When reactors were supplied with FM ratios of 0.5, 1, and 2, hyper-mesophilic temperature improved methanogenesis by up to 2.61% and shortened the lag phase by 22.88%. Meanwhile, F/M ratio 3 at 45°C decreased cumulative CH4 production by up to 26.57% and prolonged the lag phase by 10.19%. The result of this study is beneficial to managing the input substrate of a batch-AD system that treats fish waste as a sole substrate.
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SUBMITTED: 29 March 2022
ACCEPTED: 22 April 2022
PUBLISHED: 8 May 2022
SUBMITTED to ACCEPTED: 25 days
DOI: https://doi.org/10.53623/idwm.v2i1.80

Cite this article
Yulisa, A., Chairattanawat, C., Park, S. H., Jannat, M. A. H., & Hwang, S. (2022). Effect of Substrate-to-Inoculum Ratio and Temperatures During the Start-up of Anaerobic Digestion of Fish Waste. Industrial and Domestic Waste Management, 2(1), 17–29. https://doi.org/10.53623/idwm.v2i1.80
Keywords
Anaerobic digestion F/M ratio Fish waste Mono-digestion Start-up
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