Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/100528
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dc.contributor.authorDasari, Aravinden
dc.contributor.authorQuirós, Jenniferen
dc.contributor.authorHerrero, Bertaen
dc.contributor.authorBoltes, Karinaen
dc.contributor.authorGarcía-Calvo, Eloyen
dc.contributor.authorRosal, Robertoen
dc.date.accessioned2013-09-24T04:19:07Zen
dc.date.accessioned2019-12-06T20:24:03Z-
dc.date.available2013-09-24T04:19:07Zen
dc.date.available2019-12-06T20:24:03Z-
dc.date.copyright2012en
dc.date.issued2012en
dc.identifier.citationDasari, A., Quirós, J., Herrero, B., Boltes, K., García-Calvo, E., & Rosal, R. (2012). Antifouling membranes prepared by electrospinning polylactic acid containing biocidal nanoparticles. Journal of membrane science, 405-406, 134-140.en
dc.identifier.urihttps://hdl.handle.net/10356/100528-
dc.identifier.urihttp://hdl.handle.net/10220/13625en
dc.description.abstractWe prepared non-woven electrospun polylactic acid (PLA) membranes containing functionalized sepiolite fibrillar particles (5 wt%). Biocidal activity was achieved by functionalizing sepiolite fibers with Ag (26 wt%) and Cu (26 wt%), which were embedded in the fiber surface. Sepiolite particles were negatively charged in all cases, with zeta potential in the range of −15 to −37 mV, increasing their negative charge with pH. The membranes were biofouled in a cross-flow filtration device using model biofoulants, cultures of Saccharomyces cerevisiae (pH 4.5) and Pseudomonas putida (pH 7.5), which were pumped across the membrane for 24/48 h. The assessment of active biomass was performed by measuring the concentration of adenosine-5′-triphosphate (ATP) in used membranes. The results showed a significant decrease in the amount of surface ATP for PLA loaded with Ag and Cu functionalized sepiolite. The effect was particularly intense for Ag-sepiolite in contact with Saccharomyces cerevisiae, where the reduction amounted to 85% compared to neat PLA (control). This was attributed to the differences in ion availability as a function of pH and to the presence of chloride ions in solution. Pristine sepiolite (without functionalization) did not show any noticeable effect.en
dc.language.isoenen
dc.relation.ispartofseriesJournal of membrane scienceen
dc.subjectDRNTU::Engineering::Materialsen
dc.titleAntifouling membranes prepared by electrospinning polylactic acid containing biocidal nanoparticlesen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science and Engineeringen
dc.identifier.doi10.1016/j.memsci.2012.02.060en
item.fulltextNo Fulltext-
item.grantfulltextnone-
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