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Please use this identifier to cite or link to this item: http://hdl.handle.net/10373/649

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Title: Assessment of morphology for anaerobic-granular particles
Authors: Baloch, M. I.
Akunna, Joseph C.
Collier, Phillip J.
Affiliation: University of Abertay Dundee. School of Contemporary Sciences
Keywords: Anaerobic granule
Granular morphology
Settling velocity
Particle-size distribution
Issue Date: Jun-2006
Publisher: Water Environment Federation
Type: Journal Article
Refereed: peer-reviewed
Rights: Published version (c)Water Environment Federation, available from http://dx.doi.org/10.2175/106143005X90056
Citation: Baloch, M.I., Akunna, J.C. and Collier, P.J. 2006. Assessment of morphology for anaerobic-granular particles. Water Environment Research. 78(6): pp.643-646. Available from: http://dx.doi.org/10.2175/106143005X90056
Abstract: This study shows that a proper assessment of granule morphology is fundamental before applying any mathematical derivation or empirical formula based on the shape factor of anaerobic-granular particles to determine granular characteristics. The granular images and size distribution of samples observed in this study revealed two different dimensions along two axes, which characterize these particles as ellipsoids. In the literature, theoretical-settling velocities and particle-size distribution of anaerobic granules have been calculated by assuming granules as spherical-shaped and using the numerical correlation between the size and settling velocity. This resulted in large deviations in results reported for settling velocities and size distribution calculated by using empirical equations when compared with experimentally measured values. It is believed that, because of the nonspherical nature of these particles, errors have been made in the earlier studies (which considered these particles as spherical), while evaluating granular-physical properties.
URI: http://hdl.handle.net/10373/649
ISSN: 1061-4303
Appears in Collections:Science Engineering & Technology Collection

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