Influence of operating parameters on the rejection of zinc ions from aqueous solution by a nanofiltration polyamide membrane

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F17%3A39911019" target="_blank" >RIV/00216275:25310/17:39911019 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of operating parameters on the rejection of zinc ions from aqueous solution by a nanofiltration polyamide membrane

Popis výsledku v původním jazyce

This work focuses on the potential use of a commercial thin-film composite polyamide nanofiltration membranes for removal of extremely polluting and toxic Zn (II) ions from wastewater. The experiments have been performed for aqueous solutions containing zinc over a wide range of concentration in batch mode with total recycle of permeate and retentate. The influence of operating conditions such as applied pressure, feed concentration, cross-flow velocity and pH was examined. Only at lower fluxes, rejection of zinc ions increases with increasing feed concentration in concentration range tested. A plateau of the observed rejection has been reached at pressure higher than 20 bar. The maximum rejection of zinc ions was 99.3% without regard to the concentration range (50–200 mg Zn/L). For evaluation of cross-flow velocity, the film model has been used. In addition, the real retention was almost independent on the feed flow rate. From the results obtained, AFC 30 membrane can be highly recommended for removing of heavy metals such as zinc from wastewater.

Název v anglickém jazyce

Influence of operating parameters on the rejection of zinc ions from aqueous solution by a nanofiltration polyamide membrane

Popis výsledku anglicky

This work focuses on the potential use of a commercial thin-film composite polyamide nanofiltration membranes for removal of extremely polluting and toxic Zn (II) ions from wastewater. The experiments have been performed for aqueous solutions containing zinc over a wide range of concentration in batch mode with total recycle of permeate and retentate. The influence of operating conditions such as applied pressure, feed concentration, cross-flow velocity and pH was examined. Only at lower fluxes, rejection of zinc ions increases with increasing feed concentration in concentration range tested. A plateau of the observed rejection has been reached at pressure higher than 20 bar. The maximum rejection of zinc ions was 99.3% without regard to the concentration range (50–200 mg Zn/L). For evaluation of cross-flow velocity, the film model has been used. In addition, the real retention was almost independent on the feed flow rate. From the results obtained, AFC 30 membrane can be highly recommended for removing of heavy metals such as zinc from wastewater.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20402 - Chemical process engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

44th International conference of SSCHE : proceedings

ISBN

978-80-89597-58-1

ISSN

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e-ISSN

neuvedeno

Počet stran výsledku

10

Strana od-do

6-15

Název nakladatele

Slovenská spoločnosť chemického inžinierstva

Místo vydání

Bratislava

Místo konání akce

Jasná

Datum konání akce

22. 5. 2017

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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