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dc.contributor.authorKim, Lan Hee
dc.contributor.authorVrouwenvelder, Johannes S.
dc.date.accessioned2019-12-12T08:39:22Z
dc.date.available2019-12-12T08:39:22Z
dc.date.issued2019-12-02
dc.identifier.citationKim, L. H., & Vrouwenvelder, J. S. (2019). Insignificant Impact of Chemotactic Responses of Pseudomonas aeruginosa on the Bacterial Attachment to Organic Pre-Conditioned RO Membranes. Membranes, 9(12), 162. doi:10.3390/membranes9120162
dc.identifier.doi10.3390/membranes9120162
dc.identifier.urihttp://hdl.handle.net/10754/660545
dc.description.abstractWe investigated the impact of conditioning compositions on the way bacteria move and adhere to reverse osmosis (RO) membranes that have been pre-conditioned by organic compounds. We used humic acid (HA), bovine serum albumin (BSA), and sodium alginate (SA) to simulate conditioning layers on the RO membranes. First, we investigated the chemotactic responses of Pseudomonas aeruginosa PAO1 to the organic substances and the impact of changes in physicochemical characteristics of pre-conditioned membranes on bacterial attachment. Second, we observed bacterial attachment under the presence or absence of nutrients or microbial metabolic activity. Results showed that there was no relationship between the chemotactic response of P. aeruginosa PAO1 and the organic substances, and the changes in hydrophobicity, surface free energy, and surface charge resulting from changing the composition of the conditioning layer did not seem to affect bacterial attachment, whereas changing the roughness of the conditioned membrane exponentially did (exponential correlation coefficient, R2 = 0.85). We found that the initial bacterial attachment on the membrane surface is influenced by (i) the nutrients in the feed solution and (ii) the microbial metabolic activity, whereas the chemotaxis response has a negligible impact. This study would help to establish a suitable strategy to manage bacterial attachment.
dc.publisherMDPI AG
dc.relation.urlhttps://www.mdpi.com/2077-0375/9/12/162
dc.relation.urlhttps://doi.org/10.3390/membranes9120162
dc.rightsArchived with thanks to Membranes
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleInsignificant Impact of Chemotactic Responses of Pseudomonas aeruginosa on the Bacterial Attachment to Organic Pre-Conditioned RO Membranes.
dc.typeArticle
dc.contributor.departmentWater Desalination and Reuse Center (WDRC), Division of Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.identifier.journalMembranes
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Biotechnology, Faculty of Applied Sciences, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands.
kaust.personKim, Lan Hee
kaust.personVrouwenvelder, Johannes S.
refterms.dateFOA2019-12-12T08:40:52Z


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