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Dynamic anaerobic digestion-based biorefineries for on-demand renewable energy and bioproducts in a circular bioeconomy
Abstract
Anaerobic digestion (AD) is an important biotechnology for treating biodegrad- able residues and producing bioenergy, yet its full potential remains untapped. We investigate a two-phase AD system for biorefinery applications, producing valuable bioproducts, such as volatile fatty acids (VFAs) and biogas, from grass feedstock. We introduce a demand-driven operational approach to match mar- ket conditions, while minimising water use by reusing the process effluent. The proposed biorefinery model yields ~23 kg of VFAs and 75 kWh of biogas, with a potential gross revenue of €84 per tonne of grass. However, a preliminary eco- nomic analysis indicates that this biorefinery model is currently unprofitable. A sensitivity analysis suggests that reducing operating costs through technology advancements and policy support are vital to ensure economic viability. Such biorefineries offer opportunities for the diversification of farmers' incomes and the transition away from fossil resources. Our work exemplifies the role of AD as a key biotechnology in the circular bioeconomy.
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Authors (8)
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Rajas Shinde
- University College Cork, Cork, Ireland
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Anga Hackula
- University College Cork, Cork, Ireland
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Archishman Bose
- University College Cork, Cork, Ireland
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Richard O'Shea
- University College Cork, Cork, Ireland
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Susanne Barth
- Teagasc, Oak Park, Ireland
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Jerry D. Murphy
- University College Cork, Cork, Ireland
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David M. Wall
- University College Cork, Cork, Ireland
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.tibtech.2025.01.005
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Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach dostępnych w wersji elektronicznej [także online]
- Published in:
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TRENDS IN BIOTECHNOLOGY
ISSN: 0167-7799 - Language:
- English
- Publication year:
- 2025
- Bibliographic description:
- Shinde R., Hackula A., Marycz M., Bose A., O'Shea R., Barth S., Murphy J. D., Wall D. M., Dynamic anaerobic digestion-based biorefineries for on-demand renewable energy and bioproducts in a circular bioeconomy, TRENDS IN BIOTECHNOLOGY, 2025,10.1016/j.tibtech.2025.01.005
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.tibtech.2025.01.005
- Sources of funding:
-
- European Social Fund - Operational Programme Knowledge Education Development (POWER) (POWR.03.02.00-IP.08-00-DOK/16)
- Verified by:
- Gdańsk University of Technology
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