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Statements

Subject Item
n2:RIV%2F46747885%3A24620%2F14%3A%230000573%21RIV15-MSM-24620___
rdf:type
n12:Vysledek skos:Concept
rdfs:seeAlso
http://www.lib.cas.cz/aleph-google/KNA01/00177/65/001776587.html
dcterms:description
Membrane biofouling has a negative effect on membrane performance. Commercial ultrafiltration membranes were therefore modified using different polymeric nanofibers in order to gain additional water treatment functionality. Membrane surfaces were given biocide properties by adding electrospun nanofiber structures containing various forms of silver. It was found to be possible to combine colloidal zero-valent, organic, and inorganic silver with nanofiber structures and electrospinning conditions were optimized to maximize silver particle content. There were two possible methods for preparing composite ultrafiltration membranes with antibacterial properties by using: (a) direct nanofiber deposition and (b) thermal pressure lamination. Hydrodynamic properties of the developed membranes were tested on an AlfaLaval M10 ultrafiltration unit. It was found that the added functionality comes at the expense of lower permeability. Biocide properties over both short- and long-term operation were confirmed through cultivation techniques and respirometry with E. coli while concurrently monitoring how the added silver leached from the nanofiber layer. The results indicate that ultrafiltration membranes modification using silver-treated nanofibers is a promising technique worth future study and evaluation for advanced water treatment. Membrane biofouling has a negative effect on membrane performance. Commercial ultrafiltration membranes were therefore modified using different polymeric nanofibers in order to gain additional water treatment functionality. Membrane surfaces were given biocide properties by adding electrospun nanofiber structures containing various forms of silver. It was found to be possible to combine colloidal zero-valent, organic, and inorganic silver with nanofiber structures and electrospinning conditions were optimized to maximize silver particle content. There were two possible methods for preparing composite ultrafiltration membranes with antibacterial properties by using: (a) direct nanofiber deposition and (b) thermal pressure lamination. Hydrodynamic properties of the developed membranes were tested on an AlfaLaval M10 ultrafiltration unit. It was found that the added functionality comes at the expense of lower permeability. Biocide properties over both short- and long-term operation were confirmed through cultivation techniques and respirometry with E. coli while concurrently monitoring how the added silver leached from the nanofiber layer. The results indicate that ultrafiltration membranes modification using silver-treated nanofibers is a promising technique worth future study and evaluation for advanced water treatment.
dcterms:title
Biocide Modification of Ultrafiltration Membranes by Using Nanofiber Structures Biocide Modification of Ultrafiltration Membranes by Using Nanofiber Structures
skos:prefLabel
Biocide Modification of Ultrafiltration Membranes by Using Nanofiber Structures Biocide Modification of Ultrafiltration Membranes by Using Nanofiber Structures
skos:notation
RIV/46747885:24620/14:#0000573!RIV15-MSM-24620___
n4:aktivita
n17:P
n4:aktivity
P(ED0005/01/01), P(LO1201)
n4:dodaniDat
n16:2015
n4:domaciTvurceVysledku
n7:9926585 n7:5229197 n7:3522989
n4:druhVysledku
n14:O
n4:duvernostUdaju
n11:S
n4:entitaPredkladatele
n6:predkladatel
n4:idSjednocenehoVysledku
5305
n4:idVysledku
RIV/46747885:24620/14:#0000573
n4:jazykVysledku
n18:eng
n4:klicovaSlova
Composite membranes; Biofouling; Ultrafiltration; Nanofibres; Silver; Biocide properties; Water treatment
n4:klicoveSlovo
n9:Silver n9:Biocide%20properties n9:Biofouling n9:Ultrafiltration n9:Composite%20membranes n9:Nanofibres n9:Water%20treatment
n4:kontrolniKodProRIV
[82B371774270]
n4:obor
n13:DJ
n4:pocetDomacichTvurcuVysledku
3
n4:pocetTvurcuVysledku
3
n4:projekt
n5:LO1201 n5:ED0005%2F01%2F01
n4:rokUplatneniVysledku
n16:2014
n4:tvurceVysledku
Jiříček, Tomáš Lederer, Tomáš Dolina, Jan
n10:organizacniJednotka
24620