Removal of bacteria in laboratory filters: models and experiments

Bruce E. Logan, Thomas A. Hilbert, Robert G. Arnold

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Five filtration models were used to predict the effect of particle size on removal in several types of laboratory filters (nylon, cellulose and glass fiber). All models predicted similar trends in removal with particle size, although the capillary-pore model predicted substantially lower removals than the other four fibrous filtration models. These models indicated that bacterium-size (∼ 1 μm) particles are removed in filters primarily through the filtration mechanism of particle interception. Based on advertised pore sizes, removal of bacterium-size particles was a function of filter material in the order cellulose > nylon > glass fiber. The percent of bacteria removed in a nylon filter (5 μ pore diameter) was similar to removal in GF/C filters (1.2 μm pore diameter) as a result of a higher sticking coefficient of bacteria with nylon than with glass. The average sticking coefficients of three bacteria, Pseudomonas sp. JS6, Pseudomonas fluorescens P17 and Bacillus pumilus, in glass fiber (GF/C) filters, were 0.01, 0.24 and 0.20, respectively. These results indicate that filtration models can be used to describe particle removal during laboratory filtration of water and wastewater samples, and that bacteria have relatively high sticking coefficients for filter materials.

Original languageEnglish (US)
Pages (from-to)955-962
Number of pages8
JournalWater Research
Volume27
Issue number6
DOIs
StatePublished - Jun 1993

Fingerprint

Bacteria
filter
bacterium
Glass fibers
glass
experiment
Experiments
Particle size
particle size
Cellulose
cellulose
Bacilli
Pore size
interception
laboratory
removal
Wastewater
Glass
wastewater
Water

All Science Journal Classification (ASJC) codes

  • Ecological Modeling
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution

Cite this

Logan, Bruce E. ; Hilbert, Thomas A. ; Arnold, Robert G. / Removal of bacteria in laboratory filters : models and experiments. In: Water Research. 1993 ; Vol. 27, No. 6. pp. 955-962.
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Removal of bacteria in laboratory filters : models and experiments. / Logan, Bruce E.; Hilbert, Thomas A.; Arnold, Robert G.

In: Water Research, Vol. 27, No. 6, 06.1993, p. 955-962.

Research output: Contribution to journalArticle

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