Unravelling colloid filter cake motions in membrane cleaning procedures.

Scientific Reports
Arne LükenMatthias Wessling

Abstract

The filtration performance of soft colloid suspensions suffers from the agglomeration of the colloids on the membrane surface as filter cakes. Backflushing of fluid through the membrane and cross-flow flushing across the membrane are widely used methods to temporally remove the filter cake and restore the flux through the membrane. However, the phenomena occurring during the recovery of the filtration performance are not yet fully described. In this study, we filtrate poly(N-isopropylacrylamide) microgels and analyze the filter cake in terms of its composition and its dynamic mobility during removal using on-line laser scanning confocal microscopy. First, we observe uniform cake build-up that displays highly ordered and amorphous regions in the cake layer. Second, backflushing removes the cake in coherent pieces and their sizes depend on the previous cake build-up. And third, cross-flow flushing along the cake induces a pattern of longitudinal ridges on the cake surface, which depends on the cross-flow velocity and accelerates cake removal. These observations give insight into soft colloid filter cake arrangement and reveal the cake's unique behaviour exposed to shear-stress.

References

Jun 21, 2001·Physical Review Letters·Y Forterre, O Pouliquen
Jun 1, 2007·The Journal of Physical Chemistry. B·Zhiyong MengL Andrew Lyon
Nov 13, 2009·Physical Review Letters·Tamás BörzsönyiJim N McElwaine
Feb 26, 2010·Angewandte Chemie·Grant R Hendrickson, L Andrew Lyon
Nov 9, 2010·Lab on a Chip·Huibin WeiRichard N Zare
Dec 7, 2010·Advances in Colloid and Interface Science·P BacchinP Aimar
Nov 2, 2011·Journal of Physics. Condensed Matter : an Institute of Physics Journal·M MulunehD A Weitz
Aug 1, 2013·Nature Communications·Lie-Wen XiaLiang-Yin Chu
Aug 30, 2014·Soft Matter·Dennis GoAlexander J C Kuehne
Jan 21, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Zenamarkos B Sendekie, Patrice Bacchin
Mar 2, 2016·Scientific Reports·John LinkhorstMatthias Wessling
Jul 23, 2016·Soft Matter·Oded NirMatthias Wessling
Feb 12, 2017·Accounts of Chemical Research·Felix A Plamper, Walter Richtering
May 5, 2017·Scientific Reports·Priti S MohantyPeter Schurtenberger
Sep 2, 2017·Scientific Reports·I Bouhid de AguiarK Schroën
Apr 11, 2018·Scientific Reports·R van ZwietenK Schroën
Jun 8, 2018·Chemical Communications : Chem Comm·Andreas J D KrügerLaura De Laporte
Nov 30, 2018·Nature Communications·Maxime J BergmanPeter Schurtenberger
Oct 28, 2019·Nature Communications·Giulia MagnariniHarrison H Schmitt
Dec 14, 2019·Scientific Reports·John LinkhorstMatthias Wessling
May 16, 2020·Physical Review Letters·Umberto D'Ortona, Nathalie Thomas

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Methods Mentioned

BETA
confocal microscopy
membrane filtration

Software Mentioned

Elveflow

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