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dc.contributor.authorSindall, R.C.*
dc.contributor.authorDapelo, Davide*
dc.contributor.authorLeadbeater, T.*
dc.contributor.authorBridgeman, John*
dc.date.accessioned2019-04-16T09:02:51Z
dc.date.available2019-04-16T09:02:51Z
dc.date.issued2017
dc.identifier.citationSindall RC, Dapelo D, Leadbeater T et al (2017) Positron emission particle tracking (PEPT): A novel approach to flow visualisation in labs-cale anaerobic digesters. Flow Measurement and Instrumentation. 54: 250-264.en_US
dc.identifier.urihttp://hdl.handle.net/10454/16966
dc.descriptionYesen_US
dc.description.abstractPositron emission particle tracking (PEPT) was used to visualise the flow patterns established by mixing in two laboratory-scale anaerobic digesters fitted with mechanical mixing or gas mixing apparatus. PEPT allows the visualisation of flow patterns within a digester without necessitating the use of a transparent synthetic sludge. In the case of the mechanically-mixed digester, the mixing characteristics of opaque sewage sludge was compared to a transparent synthetic sludge at different mixing speeds. In the gas-mixed apparatus, two synthetic sludges were compared. In all scenarios, quasi-toroidal flow paths were established. However, mixing was less successful in more viscous liquids unless mixing power was increased to compensate for the increase in viscosity. The robustness of the PEPT derived velocities was found to be significantly affected by the frequency with which the particle enters a given volume of the vessel, with the accuracy of the calculated velocity decreasing in regions with low data capture. Nevertheless, PEPT was found to offer a means of accurate validation of computational fluid dynamics models which in turn can help to optimise flow patterns for biogas production.en_US
dc.description.sponsorshipThe first author was funded via an EPSRC CASE award in conjunction with Severn Trent Water. The second author was funded via a University of Birmingham Postgraduate Teaching Assistantship award.en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttps://doi.org/10.1016/j.flowmeasinst.2017.02.009en_US
dc.rights© 2017 Elsevier. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.en_US
dc.subjectAnaerobic digestionen_US
dc.subjectMechanical mixingen_US
dc.subjectGas mixingen_US
dc.subjectFlow patternsen_US
dc.subjectParticle trackingen_US
dc.titlePositron emission particle tracking (PEPT): A novel approach to flow visualisation in lab-scale anaerobic digestersen_US
dc.status.refereedYesen_US
dc.date.Accepted2017-02-05
dc.date.application2017-02-24
dc.typeArticleen_US
dc.type.versionAccepted manuscripten_US
refterms.dateFOA2019-04-16T09:02:51Z


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