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Home List of Titles Surface hydrophobicity of particles and bacteria in Melbourne's water storage system
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/5866
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- Surface hydrophobicity of particles and bacteria in Melbourne's water storage system
- Tomlinson, Steven; Kelly, Fiona; Palombo, Enzo A.; Harding, Ian H.
- An important parameter in describing bacterial adhesion to particles -- hydrophobicity -- has been investigated for bacteria and particles found within Melbourne’s water storage system. Data was obtained using two commonly-employed methods: contact angle measurement (CAM) and the adhesion to hydrocarbon (ATH) assay. The adhesion to hexadecane of particles collected from Silvan reservoir was found to decrease significantly when organic matter was removed from their surface by oxidation, although contact angle was not as significantly affected. The rate of conditioning film (CF) deposition was also determined, with exposure of glass slides to filtered water resulting in an increased contact angle. For the bacterial strains studied, interfacial surface tension and surface free energy parameters were calculated, thereby allowing hydrophobicity to be quantified. Change in adhesion to hexadecane of bacteria exposed to starvation conditions for two weeks was also investigated.
- Publication type
- Conference paper
- Research centre
- Swinburne University of Technology. Faculty of Life and Social Sciences. Environment and Biotechnology Centre
- Proceedings of the 1st Australian Young Water Professionals Conference, Sydney, New South Wales, Australia, 15-17 February 2006
- Publication year
- Bacteria; Disinfection; Drinking water; Hydrophobicity; Particle association
- Australian Water Association
- Publisher URL
- Copyright © 2006 the authors. Published version of the paper reproduced here in accordance with the copyright policy of the publisher.
- Full text
- Peer reviewed