Regeneration of Thin-Film Composite Membrane used for Permeation of Hexanevapors.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F19%3A00504454" target="_blank" >RIV/67985858:_____/19:00504454 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0297113" target="_blank" >http://hdl.handle.net/11104/0297113</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.seppur.2019.04.087" target="_blank" >10.1016/j.seppur.2019.04.087</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Regeneration of Thin-Film Composite Membrane used for Permeation of Hexanevapors.

Popis výsledku v původním jazyce

Thin-film polyamide composite membrane (TFC) is a good representative model of highly permeable membrane. SEM analysis showed that TFC membrane structure is swelled by hexane vapors. Contrary, its porous structure collapsed when the used membrane is stored at dry conditions. The aging of membrane causes significant decrease of both hexane vapors and nitrogen permeances while the selectivity increases tenfold. The study is based on time influence and on wetting by various solvents. Methanol treatment opens and swells the pores of aged membrane. Furthermore, the transport and separation properties were studied after gradual wetting by mutually miscible solvents with decreasing polarity (methanol, isopropanol and hexane) that are commonly used for membrane drying. Surprisingly, this solvent exchange drying procedure leads to a regeneration of the TFC membrane. The regenerated membrane shows the same transport and separation properties as the pristine TFC membrane.

Název v anglickém jazyce

Regeneration of Thin-Film Composite Membrane used for Permeation of Hexanevapors.

Popis výsledku anglicky

Thin-film polyamide composite membrane (TFC) is a good representative model of highly permeable membrane. SEM analysis showed that TFC membrane structure is swelled by hexane vapors. Contrary, its porous structure collapsed when the used membrane is stored at dry conditions. The aging of membrane causes significant decrease of both hexane vapors and nitrogen permeances while the selectivity increases tenfold. The study is based on time influence and on wetting by various solvents. Methanol treatment opens and swells the pores of aged membrane. Furthermore, the transport and separation properties were studied after gradual wetting by mutually miscible solvents with decreasing polarity (methanol, isopropanol and hexane) that are commonly used for membrane drying. Surprisingly, this solvent exchange drying procedure leads to a regeneration of the TFC membrane. The regenerated membrane shows the same transport and separation properties as the pristine TFC membrane.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/GJ17-03367Y" target="_blank" >GJ17-03367Y: Membránová separace benzínových par ze vzduchu a její optimalizace</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Separation and Purification Technology

ISSN

1383-5866

e-ISSN

—

Svazek periodika

224

Číslo periodika v rámci svazku

OCT 1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

62-69

Kód UT WoS článku

000472686400007

EID výsledku v databázi Scopus

2-s2.0-85065243074