Thin-film nanocomposite membrane with vertically embedded carbon nanotube for forward osmosis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F16%3A00243281" target="_blank" >RIV/68407700:21220/16:00243281 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.tandfonline.com/doi/full/10.1080/19443994.2016.1190110" target="_blank" >http://www.tandfonline.com/doi/full/10.1080/19443994.2016.1190110</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/19443994.2016.1190110" target="_blank" >10.1080/19443994.2016.1190110</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thin-film nanocomposite membrane with vertically embedded carbon nanotube for forward osmosis

Popis výsledku v původním jazyce

Forward osmosis (FO) for desalination is receiving tremendous attention due to its low energy consumption and simple operation compared to reverse osmosis. Here, we propose a thin-film nanocomposite (TFN) membrane with vertically embedded carbon nanotubes (CNTs) in the active layer to maximize membrane permeability without significantly sacrificing selectivity. We first attempted a spray-assisted electromagnetic field alignment technique to vertically embed CNT in the active layer of the TFN membrane. After vertically embedding the CNT, the developed TFN membrane exhibited 20% increased water flux. When chemical etching of the active layer was further applied, increase in water flux was over 300% (40 LMH). Meanwhile, the increased reverse salt flux was mild most likely due to the steric effect of CNT in the active layer. The developed TFN membrane, thus showed even higher water flux and lower reverse salt flux when compared to recently provided commercial FO membranes. This method is easy to up-scale with a one-step fabrication process, and it is cost-effective due to its simplicity and the low concentration of CNT solution used. Therefore, these findings could contribute to freshwater production using the FO process to overcome global water scarcity.

Název v anglickém jazyce

Thin-film nanocomposite membrane with vertically embedded carbon nanotube for forward osmosis

Popis výsledku anglicky

Forward osmosis (FO) for desalination is receiving tremendous attention due to its low energy consumption and simple operation compared to reverse osmosis. Here, we propose a thin-film nanocomposite (TFN) membrane with vertically embedded carbon nanotubes (CNTs) in the active layer to maximize membrane permeability without significantly sacrificing selectivity. We first attempted a spray-assisted electromagnetic field alignment technique to vertically embed CNT in the active layer of the TFN membrane. After vertically embedding the CNT, the developed TFN membrane exhibited 20% increased water flux. When chemical etching of the active layer was further applied, increase in water flux was over 300% (40 LMH). Meanwhile, the increased reverse salt flux was mild most likely due to the steric effect of CNT in the active layer. The developed TFN membrane, thus showed even higher water flux and lower reverse salt flux when compared to recently provided commercial FO membranes. This method is easy to up-scale with a one-step fabrication process, and it is cost-effective due to its simplicity and the low concentration of CNT solution used. Therefore, these findings could contribute to freshwater production using the FO process to overcome global water scarcity.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

—

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Desalination and Water Treatment

ISSN

1944-3986

e-ISSN

—

Svazek periodika

57

Číslo periodika v rámci svazku

55

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

26670-26679

Kód UT WoS článku

000386703400030

EID výsledku v databázi Scopus

2-s2.0-84975259873