Towards the dehydration of ethanol using pervaporation cross-linked poly(vinyl alcohol)/graphene oxide membranes
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Towards the dehydration of ethanol using pervaporation cross-linked poly(vinyl alcohol)/graphene oxide membranes
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - 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
Result continuities
Project
<a href="/en/project/LO1613" target="_blank" >LO1613: Future materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Membrane Science
ISSN
0376-7388
e-ISSN
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Volume of the periodical
582
Issue of the periodical within the volume
July
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
423-434
UT code for WoS article
000467250200043
EID of the result in the Scopus database
2-s2.0-85064644668