Modification of a hollow-fibre polyethersulfone membrane using silver nanoparticles formed in situ for biofouling prevention

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F18%3A00005725" target="_blank" >RIV/46747885:24620/18:00005725 - isvavai.cz</a>

Alternative codes found

RIV/28676092:_____/18:N0000092

Result on the web

<a href="https://pubs.rsc.org/en/content/articlelanding/2018/ra/c8ra02026d#!divAbstract" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2018/ra/c8ra02026d#!divAbstract</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c8ra02026d" target="_blank" >10.1039/c8ra02026d</a>

Result language

angličtina

Original language name

Modification of a hollow-fibre polyethersulfone membrane using silver nanoparticles formed in situ for biofouling prevention

Original language description

Biofouling represents a serious problem limiting the widespread application of membrane technology. Therefore, the aim of this study was to develop and verify a new modification method based on the in situ formation of silver nanoparticles and their incorporation into a membrane polymer to prevent biofouling. The modification method consisted of soaking a commercial hollow-fibre polyethersulfone membrane in a solution of silver ions, diffusion of ions into the membrane polymer, and their reduction using ascorbic acid. Such a modified membrane displayed a lower tendency towards biofouling, exhibiting an about 15% higher permeability compared to an unmodified membrane when filtering actual wastewater treatment plant effluent. The modification also led to the formation of stable silver nanoparticles (mostly in the range of 25–50 nm) homogenously distributed on the surface of the hollow-fibres. This resulted in higher surface hydrophilicity (the water contact angle decreased from 91 to 86) contributing to the biofouling prevention. The modified membrane also showed high stability, as only 2.1% of the total silver leached after 8 h of filtration. Moreover, no changes in the original membrane cross-section structure or separation properties were observed. Besides the improved antibiofouling properties of the modified membrane, the main advantage of the developed method is its simplicity, short reaction time, absence of high energy-consuming initiation, and the possibility to apply it on site, thus even with commercial membrane modules. It will increase the application potential of membranes in the field of wastewater treatment.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20402 - Chemical process engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2018

Confidentiality

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

Name of the periodical

RSC Advances

ISSN

2046-2069

e-ISSN

—

Volume of the periodical

8

Issue of the periodical within the volume

26

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

14552-14560

UT code for WoS article

000430536600045

EID of the result in the Scopus database

2-s2.0-85045841448