Abstract
Initial fouling behavior due to membrane-foulant interactions was investigated by atomic force microscopy for various reverse osmosis membranes with different surface properties. Carboxylate modified latex and unmodified latex particles were used as surrogates of organic foulants. The results showed that the membrane-foulant adhesion forces were mainly governed by membrane surface properties such as hydrophobicity and surface charge. Stronger adhesion forces were determined for the membranes with more hydrophobic and less surface charge. Fouling experiments were further carried out to correlate the adhesion force data to actual flux-decline curves. A remarkable correlation was obtained where the membranes with stronger adhesion force more suffered from flux decline.
| Original language | English |
|---|---|
| Pages (from-to) | 948-955 |
| Number of pages | 8 |
| Journal | Separation Science and Technology |
| Volume | 45 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2010 Apr |
Bibliographical note
Funding Information:The authors would like to thank the Ministry of Land, Transport, and Maritime Affairs (MLTM) for supporting this study through Seawater Engineering & Architecture of High Efficiency Reverse Osmosis (SEAHERO) program.
Keywords
- Adhesion force
- Atomic Force Microscopy
- Membrane surface property
- Organic fouling
- RO membrane
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering
- Process Chemistry and Technology
- Filtration and Separation