Development of ion exchange membrane with antimicrobial additives

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F18%3AN0000053" target="_blank" >RIV/28676092:_____/18:N0000053 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.melpro.cz/" target="_blank" >https://www.melpro.cz/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Development of ion exchange membrane with antimicrobial additives

Popis výsledku v původním jazyce

This work deals with the solution of biofouling in electromembrane processes. As anion exchange membranes contain functional groups formed by quaternary ammonium salts, they are sensitive to biofouling. Ammonium groups have a positive charge that interacts with negatively charged microorganisms present in the feed. The microorganisms are, therefore, attach to the membrane surface and biofilm layer is subsequently formed. Two additives in two concentrations (Sanitized - 0.2, 0.6% by weight, Sanafor - 1 and 4% by weight; minimum and maximum quantities of additive specified by the additive’s manufacturers) were used for polyethylene to prevent adhesion of microorganisms to the ion exchange membrane. First additive was polyethylene granulate with pyrithione zinc as an antimicrobial agent (provided by Sanafor). The second used additive was silver-glass powder with silver-magnesium-aluminum phosphate complex supplied by Sanitized. Each additive was mixed with the starting membrane materials and modified membrane produced. Antibacterial properties of modified ion exchange membrane were tested through measuring total DNA extracted from membrane as well as cultivation test on agar plates. To evaluate basic membrane characteristics, the ED tests were carried out. Electrochemical properties, ion-exchange capacity and physical properties were measured as well. Results showed that performed antimicrobial modification did not significantly affect the material properties of membranes, while biofilm growth on the membrane surface was suppressed. Since preliminary results are promising, the development of membranes with antimicrobial additives will continue to achieve ion exchange membranes with long life due to the lower tendency toward biofouling while keeping required material properties.

Název v anglickém jazyce

Development of ion exchange membrane with antimicrobial additives

Popis výsledku anglicky

This work deals with the solution of biofouling in electromembrane processes. As anion exchange membranes contain functional groups formed by quaternary ammonium salts, they are sensitive to biofouling. Ammonium groups have a positive charge that interacts with negatively charged microorganisms present in the feed. The microorganisms are, therefore, attach to the membrane surface and biofilm layer is subsequently formed. Two additives in two concentrations (Sanitized - 0.2, 0.6% by weight, Sanafor - 1 and 4% by weight; minimum and maximum quantities of additive specified by the additive’s manufacturers) were used for polyethylene to prevent adhesion of microorganisms to the ion exchange membrane. First additive was polyethylene granulate with pyrithione zinc as an antimicrobial agent (provided by Sanafor). The second used additive was silver-glass powder with silver-magnesium-aluminum phosphate complex supplied by Sanitized. Each additive was mixed with the starting membrane materials and modified membrane produced. Antibacterial properties of modified ion exchange membrane were tested through measuring total DNA extracted from membrane as well as cultivation test on agar plates. To evaluate basic membrane characteristics, the ED tests were carried out. Electrochemical properties, ion-exchange capacity and physical properties were measured as well. Results showed that performed antimicrobial modification did not significantly affect the material properties of membranes, while biofilm growth on the membrane surface was suppressed. Since preliminary results are promising, the development of membranes with antimicrobial additives will continue to achieve ion exchange membranes with long life due to the lower tendency toward biofouling while keeping required material properties.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

<a href="/cs/project/LO1418" target="_blank" >LO1418: Progresivní rozvoj Membránového inovačního centra</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Book of Abstracts, MELPRO Conference, 2018

ISBN

978-80-906831-2-9

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

147

Název nakladatele

Czech Membrane Platform

Místo vydání

Praha

Místo konání akce

Praha

Datum konání akce

13. 5. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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