Particle deposition and biofilm formation on microstructured membranes

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23 Citations (Scopus)

Abstract

The formation of a biofilm on membranes with micro-obstacles as structures has been studied. These structured membranes showed growth of the biofilm upstream of the structures regardless of their orientation relative to the flow direction. A typical net shaped spacer was fouled under similar experimental conditions as a benchmark to observe the fouling locations. The spacer junctions showed similar biofilm formation as the structured membranes with the biomass accumulating upstream. 2D CFD simulations were used to determine the flow profile around structures of different shapes as well as the local surface shear rates on the walls of these structures. The flow profiles showed recirculation zones behind star and circular shaped geometries. The local shear forces showed a minimum downstream of the structures with the maximum shear rate observed along the sides of the structures. These observations contrast earlier findings where deposition and biofilm formation occurs downstream of the obstacles.
Original languageEnglish
Pages (from-to)43-51
Number of pages9
JournalJournal of membrane science
Volume364
Issue number1-2
DOIs
Publication statusPublished - 2010

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biofilms
Biofilms
membranes
Membranes
shear
spacers
Shear deformation
upstream
Benchmarking
fouling
biomass
charge flow devices
profiles
Fouling
Biomass
Stars
Computational fluid dynamics
stars
Geometry
Growth

Keywords

  • METIS-269777

Cite this

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title = "Particle deposition and biofilm formation on microstructured membranes",
abstract = "The formation of a biofilm on membranes with micro-obstacles as structures has been studied. These structured membranes showed growth of the biofilm upstream of the structures regardless of their orientation relative to the flow direction. A typical net shaped spacer was fouled under similar experimental conditions as a benchmark to observe the fouling locations. The spacer junctions showed similar biofilm formation as the structured membranes with the biomass accumulating upstream. 2D CFD simulations were used to determine the flow profile around structures of different shapes as well as the local surface shear rates on the walls of these structures. The flow profiles showed recirculation zones behind star and circular shaped geometries. The local shear forces showed a minimum downstream of the structures with the maximum shear rate observed along the sides of the structures. These observations contrast earlier findings where deposition and biofilm formation occurs downstream of the obstacles.",
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Particle deposition and biofilm formation on microstructured membranes. / Ngene, I.S.; Lammertink, Rob G.H.; Wessling, Matthias; van der Meer, Walterus Gijsbertus Joseph.

In: Journal of membrane science, Vol. 364, No. 1-2, 2010, p. 43-51.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Particle deposition and biofilm formation on microstructured membranes

AU - Ngene, I.S.

AU - Lammertink, Rob G.H.

AU - Wessling, Matthias

AU - van der Meer, Walterus Gijsbertus Joseph

PY - 2010

Y1 - 2010

N2 - The formation of a biofilm on membranes with micro-obstacles as structures has been studied. These structured membranes showed growth of the biofilm upstream of the structures regardless of their orientation relative to the flow direction. A typical net shaped spacer was fouled under similar experimental conditions as a benchmark to observe the fouling locations. The spacer junctions showed similar biofilm formation as the structured membranes with the biomass accumulating upstream. 2D CFD simulations were used to determine the flow profile around structures of different shapes as well as the local surface shear rates on the walls of these structures. The flow profiles showed recirculation zones behind star and circular shaped geometries. The local shear forces showed a minimum downstream of the structures with the maximum shear rate observed along the sides of the structures. These observations contrast earlier findings where deposition and biofilm formation occurs downstream of the obstacles.

AB - The formation of a biofilm on membranes with micro-obstacles as structures has been studied. These structured membranes showed growth of the biofilm upstream of the structures regardless of their orientation relative to the flow direction. A typical net shaped spacer was fouled under similar experimental conditions as a benchmark to observe the fouling locations. The spacer junctions showed similar biofilm formation as the structured membranes with the biomass accumulating upstream. 2D CFD simulations were used to determine the flow profile around structures of different shapes as well as the local surface shear rates on the walls of these structures. The flow profiles showed recirculation zones behind star and circular shaped geometries. The local shear forces showed a minimum downstream of the structures with the maximum shear rate observed along the sides of the structures. These observations contrast earlier findings where deposition and biofilm formation occurs downstream of the obstacles.

KW - METIS-269777

U2 - 10.1016/j.memsci.2010.07.048

DO - 10.1016/j.memsci.2010.07.048

M3 - Article

VL - 364

SP - 43

EP - 51

JO - Journal of membrane science

JF - Journal of membrane science

SN - 0376-7388

IS - 1-2

ER -