Spacer geometry and particle deposition in spiral wound membrane feed channels

A.I. Radu, M.S.H. van Steen, Johannes S. Vrouwenvelder, Mark C.M. van Loosdrecht, C. Picioreanu

Research output: Contribution to journalArticlepeer-review

70 Scopus citations

Abstract

Deposition of microspheres mimicking bacterial cells was studied experimentally and with a numerical model in feed spacer membrane channels, as used in spiral wound nanofiltration (NF) and reverse osmosis (RO) membrane systems. In-situ microscopic observations in membrane fouling simulators revealed formation of specific particle deposition patterns for different diamond and ladder feed spacer orientations. A three-dimensional numerical model combining fluid flow with a Lagrangian approach for particle trajectory calculations could describe very well the in-situ observations on particle deposition in flow cells. Feed spacer geometry, positioning and cross-flow velocity sensitively influenced the particle transport and deposition patterns. The deposition patterns were not influenced by permeate production. This combined experimental-modeling approach could be used for feed spacer geometry optimization studies for reduced (bio)fouling. © 2014 Elsevier Ltd.
Original languageEnglish (US)
Pages (from-to)160-176
Number of pages17
JournalWater Research
Volume64
DOIs
StatePublished - Nov 2014

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