Assessment of morphology for anaerobic-granular particles

M. I. Baloch, Joseph C. Akunna, Phillip J. Collier

Research output: Contribution to journalArticle

  • 1 Citations

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.
Original languageEnglish
Pages (from-to)643-646
Number of pages4
JournalWater Environment Research
Volume78
Issue number6
DOIs
StatePublished - 1 Jun 2006

Fingerprint

Acetyl-CoA Hydrolase
settling velocity
Particle Size
Mysticism
Abducens Nerve
Self Concept
physical property
particle size

Cite this

Baloch, M. I.; Akunna, Joseph C.; Collier, Phillip J. / Assessment of morphology for anaerobic-granular particles.

In: Water Environment Research, Vol. 78, No. 6, 01.06.2006, p. 643-646.

Research output: Contribution to journalArticle

@article{d0bceb3a9cd343a183c5472e52cdb327,
title = "Assessment of morphology for anaerobic-granular particles",
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.",
author = "Baloch, {M. I.} and Akunna, {Joseph C.} and Collier, {Phillip J.}",
year = "2006",
month = "6",
doi = "10.2175/106143005X90056",
volume = "78",
pages = "643--646",
journal = "Water Environment Research",
issn = "1061-4303",
publisher = "Water Environment Federation",
number = "6",

}

Assessment of morphology for anaerobic-granular particles. / Baloch, M. I.; Akunna, Joseph C.; Collier, Phillip J.

In: Water Environment Research, Vol. 78, No. 6, 01.06.2006, p. 643-646.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Assessment of morphology for anaerobic-granular particles

AU - Baloch,M. I.

AU - Akunna,Joseph C.

AU - Collier,Phillip J.

PY - 2006/6/1

Y1 - 2006/6/1

N2 - 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.

AB - 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.

U2 - 10.2175/106143005X90056

DO - 10.2175/106143005X90056

M3 - Article

VL - 78

SP - 643

EP - 646

JO - Water Environment Research

T2 - Water Environment Research

JF - Water Environment Research

SN - 1061-4303

IS - 6

ER -