Shear-induced detachment of biofilms from hollow fiber silicone membranes

Z. Huang, E. S. Mclamore, Han-Sheng Chuang, W. Zhang, S. Wereley, J. L.C. Leon, M. K. Banks

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A suite of techniques was utilized to evaluate the correlation between biofilm physiology, fluid-induced shear stress, and detachment in hollow fiber membrane aerated bioreactors. Two monoculture species biofilms were grown on silicone fibers in a hollow fiber membrane aerated bioreactors (HfMBR) to assess detachment under laminar fluid flow conditions. Both physiology (biofilm thickness and roughness) and nutrient mass transport data indicated the presence of a steady state mature biofilm after 3 weeks of development. Surface shear stress proved to be an important parameter for predicting passive detachment for the two biofilms. The average shear stress at the surface of Nitrosomonas europaea biofilms (54.5±3.2mPa) was approximately 20% higher than for Pseudomonas aeruginosa biofilms (45.8±7.7mPa), resulting in higher biomass detachment. No significant difference in shear stress was measured between immature and mature biofilms of the same species. There was a significant difference in detached biomass for immature vs. mature biofilms in both species. However, there was no difference in detachment rate between the two species.

Original languageEnglish
Pages (from-to)525-534
Number of pages10
JournalBiotechnology and Bioengineering
Volume110
Issue number2
DOIs
Publication statusPublished - 2013 Feb 1

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Biofilms
Silicones
Membranes
Fibers
Shear stress
Physiology
Bioreactors
Biomass
Nitrosomonas europaea
Pseudomonas aeruginosa
Nutrients
Flow of fluids
Mass transfer
Surface roughness
Food
Fluids

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology

Cite this

Huang, Z., Mclamore, E. S., Chuang, H-S., Zhang, W., Wereley, S., Leon, J. L. C., & Banks, M. K. (2013). Shear-induced detachment of biofilms from hollow fiber silicone membranes. Biotechnology and Bioengineering, 110(2), 525-534. https://doi.org/10.1002/bit.24631
Huang, Z. ; Mclamore, E. S. ; Chuang, Han-Sheng ; Zhang, W. ; Wereley, S. ; Leon, J. L.C. ; Banks, M. K. / Shear-induced detachment of biofilms from hollow fiber silicone membranes. In: Biotechnology and Bioengineering. 2013 ; Vol. 110, No. 2. pp. 525-534.
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Huang, Z, Mclamore, ES, Chuang, H-S, Zhang, W, Wereley, S, Leon, JLC & Banks, MK 2013, 'Shear-induced detachment of biofilms from hollow fiber silicone membranes', Biotechnology and Bioengineering, vol. 110, no. 2, pp. 525-534. https://doi.org/10.1002/bit.24631

Shear-induced detachment of biofilms from hollow fiber silicone membranes. / Huang, Z.; Mclamore, E. S.; Chuang, Han-Sheng; Zhang, W.; Wereley, S.; Leon, J. L.C.; Banks, M. K.

In: Biotechnology and Bioengineering, Vol. 110, No. 2, 01.02.2013, p. 525-534.

Research output: Contribution to journalArticle

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