Towards the dehydration of ethanol using pervaporation cross-linked poly(vinyl alcohol)/graphene oxide membranes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43919305" target="_blank" >RIV/60461373:22310/19:43919305 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0376738819301528?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0376738819301528?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.memsci.2019.03.076" target="_blank" >10.1016/j.memsci.2019.03.076</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Towards the dehydration of ethanol using pervaporation cross-linked poly(vinyl alcohol)/graphene oxide membranes

Popis výsledku v původním jazyce

Highly hydrophilic inorganic material graphene oxide (GO)was successfully prepared and incorporated into a cross-linked poly(vinyl alcohol)(PVA)matrix. The obtained mixed matrix membranes (MMMs)have been used for the dehydration of ethanol (10:90% water-ethanol)by pervaporation (PV), monitoring their performance in terms of total permeate flux, partial components fluxes, as well as their separation factor. The effect of filler was analyzed by doubling the GO content (at 0.5, 1.0, and 2.0 wt%)in the MMMs. A complete analysis of the operating temperature (between 40 and 70 °C)was carried out by means of Arrhenius relationship. Moreover, the membranes were characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), differential scanning calorimetry (DSC), thermo-gravimetric analysis (TGA), X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR), measurements of degree of swelling (uptake), water contact angle (CA)and mechanical properties. At 40 °C, the best performance was provided by the MMMs containing 1 wt% GO, showing a separation factor of 263 and a permeate flux of about 0.137 kg m−2 h−1 (in which 0.133 kg m−2 h−1 corresponds to water). This represents a 75% enhancement of the original permeation rate of pristine cross-linked PVA membranes. Taking into account the promising results, it is likely that these MMMs will provide featured benefits in green processes, e.g. ethanol purification by means of less-energy consumption. © 2019 Elsevier B.V.

Název v anglickém jazyce

Towards the dehydration of ethanol using pervaporation cross-linked poly(vinyl alcohol)/graphene oxide membranes

Popis výsledku anglicky

Highly hydrophilic inorganic material graphene oxide (GO)was successfully prepared and incorporated into a cross-linked poly(vinyl alcohol)(PVA)matrix. The obtained mixed matrix membranes (MMMs)have been used for the dehydration of ethanol (10:90% water-ethanol)by pervaporation (PV), monitoring their performance in terms of total permeate flux, partial components fluxes, as well as their separation factor. The effect of filler was analyzed by doubling the GO content (at 0.5, 1.0, and 2.0 wt%)in the MMMs. A complete analysis of the operating temperature (between 40 and 70 °C)was carried out by means of Arrhenius relationship. Moreover, the membranes were characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), differential scanning calorimetry (DSC), thermo-gravimetric analysis (TGA), X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR), measurements of degree of swelling (uptake), water contact angle (CA)and mechanical properties. At 40 °C, the best performance was provided by the MMMs containing 1 wt% GO, showing a separation factor of 263 and a permeate flux of about 0.137 kg m−2 h−1 (in which 0.133 kg m−2 h−1 corresponds to water). This represents a 75% enhancement of the original permeation rate of pristine cross-linked PVA membranes. Taking into account the promising results, it is likely that these MMMs will provide featured benefits in green processes, e.g. ethanol purification by means of less-energy consumption. © 2019 Elsevier B.V.

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/LO1613" target="_blank" >LO1613: Výzkum nových materiálů pro chemický průmysl</a><br>

Návaznosti

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

Journal of Membrane Science

ISSN

0376-7388

e-ISSN

—

Svazek periodika

582

Číslo periodika v rámci svazku

July

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

423-434

Kód UT WoS článku

000467250200043

EID výsledku v databázi Scopus

2-s2.0-85064644668