Effect of sodium chloride on cell surface hydrophobicity and formation of biofilm in membrane bioreactor
This work presents an experimental study aimed at assessing the relationship between cell surface hydrophobicity (CSH) and the formation of a membrane-attached biofilm. In particular, the investigation focused on the effects of growth conditions on the hydrophobicity of bacterial cells grown in susp...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Prince of Songkla University
2005-09-01
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| Series: | Songklanakarin Journal of Science and Technology (SJST) |
| Subjects: | |
| Online Access: | http://www.sjst.psu.ac.th/journal/27-5-pdf/16-sodium-chloride.pdf |
| Summary: | This work presents an experimental study aimed at assessing the relationship between cell surface hydrophobicity (CSH) and the formation of a membrane-attached biofilm. In particular, the investigation focused on the effects of growth conditions on the hydrophobicity of bacterial cells grown in suspension. Identical growth conditions were then used in a lab-scale extractive membrane bioreactor fed on phenol as the sole carbon source to assess their effect on biofilm formation. CSH was found to decrease with increasing cellular age and in the presence of sodium chloride (0.5% w/v) in the growth medium. Pictures taken by a digital camera clearly showed the differences in biofilm morphology resulting from the different growth conditions: biofilms formed in the membrane bioreactor under low CSH (2%) condition proved to be thinner and more fragile than those formed under high CSH condition (44%). |
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| ISSN: | 0125-3395 |