In microfiltration, a deposit of foulant tends to form on the membrane surface and this usually controls the performance of the filtration process. This paper discusses the influence of physical parameters such as aeration and permeates flux on migration and deposition of above micron particles on the membrane surface. Kaolin clay suspension of particle 3.7–8 μm with mean particle diameter 4.1 μm was used in this study. Equal amount of mass of deposited particles on the membrane surface created different transmembrane pressure (TMP) when operated at different aeration rates and permeate flux showing that there is a composite effect. The particle deposition rate at the beginning at lower flux was almost linear which changed to a sharp logarithamic rise at higher flux. The difference in TMP rise for the same amount of deposit demonstrated the selective nature of particle deposition. The mass of the particle deposition on the membrane surface could be described by two parameters: maximum deposition and time using a simple empirical logarithamic equation y=k/[1+exp(b−at)], where k, a, and b are constant; y is the particulate mass deposit (g/m2) and t is the time. The maximum particle mass deposition growth could be described by the equation dy/dt=1/4ka.
Skip Nav Destination
Article navigation
Research Article|
December 01 2010
Influence of aeration and permeate flux on deposition of particulates on membrane surface Available to Purchase
Rupak Aryal;
Rupak Aryal
1Faculty of Engineering, University of Technology, Sydney, P.O. Box 123, Broadway, NSW 2007, Australia
Search for other works by this author on:
Saravanamuthu Vigneswaran;
1Faculty of Engineering, University of Technology, Sydney, P.O. Box 123, Broadway, NSW 2007, Australia
Tel: +612 95142641, Fax: +612 95142633; E-mail: [email protected]
Search for other works by this author on:
Jaya Kandasamy;
Jaya Kandasamy
1Faculty of Engineering, University of Technology, Sydney, P.O. Box 123, Broadway, NSW 2007, Australia
Search for other works by this author on:
Bivek Baral;
Bivek Baral
2UMR Génie des Procédés Eau et Bioproduits (UMR–CIRAD 016), Université Montpellier II, CC005, Place Eugène Bataillon; 34095, Montpellier Cedex 05, France
Search for other works by this author on:
Alain Grasmick
Alain Grasmick
3Department of Mechanical Engineering, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
Search for other works by this author on:
Water Supply (2010) 10 (6): 979–986.
Citation
Rupak Aryal, Saravanamuthu Vigneswaran, Jaya Kandasamy, Bivek Baral, Alain Grasmick; Influence of aeration and permeate flux on deposition of particulates on membrane surface. Water Supply 1 December 2010; 10 (6): 979–986. doi: https://doi.org/10.2166/ws.2010.515
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Could not validate captcha. Please try again.
eBook
Pay-Per-View Access
$38.00