Two-Stage and One-Stage Anaerobic Co-digestion of Vinasse and Spent Brewer Yeast Cells for Biohydrogen and Methane Production.

Autor: Nualsri C; Faculty of Food and Agricultural Technology, Pibulsongkram Rajabhat University, Phitsanulok, 65000, Thailand., Abdul PM; Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia., Imai T; Division of Environmental Science and Engineering, Graduate School of Science and Engineering, Yamaguchi University, Yamaguchi, 755-8611, Japan., Reungsang A; Biotechnology Program, Faculty of Technology, Khon Kaen University, Khon Kaen, 40002, Thailand.; Research Group for Development of Microbial Hydrogen Production Process From Biomass, Khon Kaen University, Khon Kaen, 40002, Thailand., Sittijunda S; Faculty of Environment and Resource Studies, Mahidol University, Nakhon Pathom, 73170, Thailand. Sureewan.sit@mahidol.ac.th.
Jazyk: angličtina
Zdroj: Molecular biotechnology [Mol Biotechnol] 2024 Jan 17. Date of Electronic Publication: 2024 Jan 17.
DOI: 10.1007/s12033-023-01015-3
Abstrakt: This study aimed to evaluate the two-stage and one-stage anaerobic co-digestion of vinasse and spent brewer yeast cells (SBY) for biohydrogen and methane production. Optimization of the vinasse-to-SBY ratio and fly ash concentration of the two-stage and one-stage production processes was investigated. In the two-stage process, the vinasse-to-SBY ratio and fly ash concentration were optimized, and the leftover effluent was used for methane production. The optimum conditions for biohydrogen production were a vinasse-to-SBY ratio of 7:3% v/w and fly ash concentration of 0.4% w/v, in which the maximum hydrogen yield was 43.7 ml-H 2 /g-VSadded. In contrast, a vinasse-to-SBY ratio of 10:0% v/w and fly ash concentration of 0.2% w/v were considered optimal for methane production, and resulted in a maximum methane yield of 214.6 ml-CH 4 /g-VSadded. For the one-stage process, a vinasse-to-SBY ratio of 10:0% v/w and fly ash concentration of 0.1% w/v were considered optimal, and resulted in a maximum methane yield of 243.6 ml-CH 4 /g-VSadded. In the two-stage process, the energy yield from hydrogen (0.05-0.47 kJ/g-VSadded) was 0.62%-11.78%, and the major fraction was approximately 88.22%-99.38% gain from methane (3.19-7.73 kJ/g-VSadded). For the one-stage process, the total energy yield distribution ranged from 4.20 to 8.77 kJ/g-VSadded.
(© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
Databáze: MEDLINE
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