Membrane Surface Modification by Nanosilver for Biofouling Restriction

Kód výsledku v IS VaVaI

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Nalezeny alternativní kódy

RIV/46747885:24620/15:00000841

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Membrane Surface Modification by Nanosilver for Biofouling Restriction

Popis výsledku v původním jazyce

Membrane biofouling limits widespread using of membrane technology in different fields. Several ways how to restrict this negative effect and achieve improving in long-term membrane filtration performances have been tested so far. Membrane modification by silver in the nanometre size-range can be a promising option for achieving high and long-term membrane permeabilities as well as antimicrobial features. Commercially available ultrafiltration membrane NADIR (R) UP 150 (commonly used for wastewater treatment) was modified by nanosilver. Modification methods were based on i) diffusion of silver together with its subsequent reduction, and ii) silver-doped nanofibers. Changes in permeabilities, antimicrobial properties, silver leaching and contact angles of modified membranes were examined. While the membrane modified by diffusion method revealed higher permeabilities with demineralized water as well as diluted activated sludge, membrane modified through silver-doped nanofibers showed lower permeabilities, when comparing to unmodified one. The results of filtration tests well corresponded with contact angles which showed higher hydrophilic character of membranes modified through diffusion method. Both modified membranes also exhibited strong antimicrobial features and low silver leaching over time.

Název v anglickém jazyce

Membrane Surface Modification by Nanosilver for Biofouling Restriction

Popis výsledku anglicky

Membrane biofouling limits widespread using of membrane technology in different fields. Several ways how to restrict this negative effect and achieve improving in long-term membrane filtration performances have been tested so far. Membrane modification by silver in the nanometre size-range can be a promising option for achieving high and long-term membrane permeabilities as well as antimicrobial features. Commercially available ultrafiltration membrane NADIR (R) UP 150 (commonly used for wastewater treatment) was modified by nanosilver. Modification methods were based on i) diffusion of silver together with its subsequent reduction, and ii) silver-doped nanofibers. Changes in permeabilities, antimicrobial properties, silver leaching and contact angles of modified membranes were examined. While the membrane modified by diffusion method revealed higher permeabilities with demineralized water as well as diluted activated sludge, membrane modified through silver-doped nanofibers showed lower permeabilities, when comparing to unmodified one. The results of filtration tests well corresponded with contact angles which showed higher hydrophilic character of membranes modified through diffusion method. Both modified membranes also exhibited strong antimicrobial features and low silver leaching over time.

Druh

D - Stať ve sborníku

CEP obor

JI - Kompositní materiály

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

NANOCON 2015: 7TH INTERNATIONAL CONFERENCE ON NANOMATERIALS - RESEARCH & APPLICATION

ISBN

978-80-87294-63-5

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

213-218

Název nakladatele

TANGER LTD

Místo vydání

Česká republika

Místo konání akce

Brno, CZECH REPUBLIC

Datum konání akce

1. 1. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000374708800037