Two-phase anaerobic digestion in leach bed reactors coupled to anaerobic filters: A review and the potential of biochar filters
Article
Article Title | Two-phase anaerobic digestion in leach bed reactors coupled to anaerobic filters: A review and the potential of biochar filters |
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ERA Journal ID | 4066 |
Article Category | Article |
Authors | Collins, B.A., Birzer, C.H., Harris, P.W., Kidd, S.P., McCabe, B.K. and Medwell, P.R. |
Journal Title | Renewable and Sustainable Energy Reviews |
Journal Citation | 175, pp. 1-19 |
Article Number | 113187 |
Number of Pages | 19 |
Year | 2023 |
Publisher | Elsevier |
ISSN | 1364-0321 |
1879-0690 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.rser.2023.113187 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S1364032123000436 |
Abstract | Biochar addition in anaerobic digesters is an emerging technique for enhancing high-solids anaerobic digestion. Recycling of biochar can further enhance performance and reduce costs for biochar production; however, mixing biochar with feedstock and separating from digestate is impractical. A more pragmatic method of applying biochar for high-solids digestion could be coupling a leach bed reactor (LBR) with a biochar-packed anaerobic filter (AF) to form a two-phase system. Separating the anaerobic digestion process between reactors can improve process efficiency by enhancing hydrolysis and acidogenesis in the LBR and producing higher quality biogas in the AF. However, two-phase systems can be inefficient if separation of the anaerobic digestion process between reactors – referred to as phase separation – is poor. This article aims to: (i) integrate current knowledge from literature investigating batch LBR-AF systems to improve understanding of the role of different process parameters on phase separation and process efficiency; and (ii) explore the idea of biochar as a filter medium in an LBR-AF system. |
Keywords | Phase separation; High-solids anaerobic digestion; Leachate recirculation; Biogas production; Biochar; Co -digestion |
ANZSRC Field of Research 2020 | 300210. Sustainable agricultural development |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Adelaide |
Centre for Agricultural Engineering (Operations) |
https://research.usq.edu.au/item/y9yyy/two-phase-anaerobic-digestion-in-leach-bed-reactors-coupled-to-anaerobic-filters-a-review-and-the-potential-of-biochar-filters
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