Scaling bacterial filtration rates in different sized porous media

M. J. Martin, B. E. Logan, W. P. Johnson, D. G. Jewett, Robert G Arnold

Research output: Contribution to journalArticle

80 Citations (Scopus)

Abstract

Aquifer sediments contain a wide distribution of particle sizes, but only a single collector diameter (d) can be used in a filtration equation. To establish a method for selecting a characteristic d when media are composed of different sized particles, we measured bacterial retention in columns packed with either crushed quartz sand (separated into three different size ranges) or borosilicate glass beads. The best methods for choosing d were those that produced nearly constant collision efficiencies (αs). Characteristic diameters included: d10(10% of all particles were smaller), d90(90% of all particles were smaller), da (arithmetic mean), and dg (geometric mean), where all diameters were calculated using number, area, and volume size distributions. Bacteria αs decreased in proportion to the distance traveled in the packed bed, and were scaled by the number of bacteria-sediment collisions using a dimensionless collision number (ε). These comparisons indicated that characteristic diameters based on the smaller particles (da and dg using number distributions, and d10 using a volume distribution) most accurately described bacterial transport in the different-sized porous media.

Original languageEnglish (US)
Pages (from-to)407-415
Number of pages9
JournalJournal of Environmental Engineering
Volume122
Issue number5
DOIs
StatePublished - May 1996
Externally publishedYes

Fingerprint

Porous materials
porous medium
Bacteria
Sediments
Quartz
Borosilicate glass
collision
Packed beds
Aquifers
Sand
Particle size
bacterium
sediment
range size
glass
particle size
aquifer
quartz
sand
rate

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Environmental Science(all)
  • Environmental Chemistry
  • Environmental Engineering

Cite this

Scaling bacterial filtration rates in different sized porous media. / Martin, M. J.; Logan, B. E.; Johnson, W. P.; Jewett, D. G.; Arnold, Robert G.

In: Journal of Environmental Engineering, Vol. 122, No. 5, 05.1996, p. 407-415.

Research output: Contribution to journalArticle

Martin, M. J. ; Logan, B. E. ; Johnson, W. P. ; Jewett, D. G. ; Arnold, Robert G. / Scaling bacterial filtration rates in different sized porous media. In: Journal of Environmental Engineering. 1996 ; Vol. 122, No. 5. pp. 407-415.
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