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Assessment of mixing quality in full-scale, biogas-mixed anaerobic digestion using CFD

Dapelo, Davide
; 
Bridgeman, John
Publication Date
2018-10
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Supervisor
Keywords
Industrial-scale anaerobic digestion, CFD, Euler-Lagrange, Mixing assessment, Optimisation of performance
Rights
© 2018 Elsevier. Reproduced in accordance with the publisher's selfarchiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
Peer-Reviewed
Yes
Open Access status
Accepted for publication
2018-06-12
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Engineering and Digital Technology Publications
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Abstract
An Euler-Lagrange CFD model is applied to a full-scale, biogas-mixed anaerobic digester to improve mixing efficiency and improve overall performance. Two quantitative mixing criteria previously adopted in anaerobic digestion (viz., uniformity index and dead volume) are critically assessed for the first time. A novel qualitative method is introduced to clarify the output of the quantitative methods. The first-ever quantitative assessment of mixing quality in full-scale, biogas-mixed anaerobic digestion is then proposed, and a strategy to improve mixing, involving the combined use of concentric nozzle manifolds at the base of the digester, is evaluated.
URI
http://hdl.handle.net/10454/16360
Version
Accepted Manuscript
Citation
Dapelo D and Bridgeman J (2018) Assessment of mixing quality in full-scale, biogas-mixed anaerobic digestion using CFD. Bioresource Technology. 265: 480-489.
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Link to Version of Record
https://doi.org/10.1016/j.biortech.2018.06.036
Type
Article
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