Repository logo
  • Log In
    New user? Click here to register.Have you forgotten your password?
University College Dublin
    Colleges & Schools
    Statistics
    All of DSpace
  • Log In
    New user? Click here to register.Have you forgotten your password?
  1. Home
  2. College of Engineering & Architecture
  3. School of Chemical and Bioprocess Engineering
  4. Chemical and Bioprocess Engineering Research Collection
  5. Understanding particle deposition kinetics on NF membranes: A focus on micro-beads & membrane interactions at different environmental conditions
 
  • Details
Options

Understanding particle deposition kinetics on NF membranes: A focus on micro-beads & membrane interactions at different environmental conditions

Author(s)
Cao, Huayu  
Habimana, Olivier  
Correia-Semião, Andrea Joana C.  
Allen, Ashley  
Heffernan, Rory  
Casey, Eoin  
Uri
http://hdl.handle.net/10197/6360
Date Issued
2015-02-01
Date Available
2015-02-19T10:05:14Z
Abstract
The significance of nanofiltration membrane surface properties when interacting with microbeads with and without permeate flux was investigated. This was achieved by characterising the surface tension and zeta potential of micro-beads and NF90 membranes to determine the colloid–membrane interaction forces. Dynamic adhesion assays under different ionic strengths (0.1 M and 0.01 M) and pH (5, 7, and 9) were conducted. Experimental results showed that at high ionic strength, pH does not have a significant effect on adhesion rates, while at low ionic strength the adhesion rate increased at pH 7 (4.56 s−1 cm−2) compared to pH 5 and pH 9, with rates of 2.69 and 3.66 s−1 cm−2 respectively. A model was devised to predict colloidal adhesion onto membranes under increasing permeate flux conditions, taking into account all interaction forces. Model predictions indicate that drag force overwhelms all other colloid–membrane interaction forces when the permeate flux increases to 7.2 L h−1 m−2. This study suggests that altering membrane surface properties for the prevention of fouling may be limited in its success as an antifouling strategy.
Sponsorship
European Research Council
Science Foundation Ireland
Type of Material
Journal Article
Publisher
Elsevier
Journal
Journal of Membrane Science
Volume
475
Start Page
367
End Page
375
Copyright (Published Version)
2014 Elsevier
Subjects

Adhesion

Nanofiltration

XDVLO

Biofouling

Microbead

DOI
10.1016/j.memsci.2014.10.038
Language
English
Status of Item
Peer reviewed
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
File(s)
Loading...
Thumbnail Image
Name

Roy_JMS_paper-marked_-clean.pdf

Size

1.75 MB

Format

Adobe PDF

Checksum (MD5)

2d9d2b8ba8c6eb7e0ebf3f74aea1d36d

Owning collection
Chemical and Bioprocess Engineering Research Collection

Item descriptive metadata is released under a CC-0 (public domain) license: https://creativecommons.org/public-domain/cc0/.
All other content is subject to copyright.

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science

  • Cookie settings
  • Privacy policy
  • End User Agreement