scholarly journals Preparation of graphene oxide/poly(vinyl alcohol) composite membrane and pervaporation performance for ethanol dehydration

RSC Advances ◽  
2019 ◽  
Vol 9 (27) ◽  
pp. 15457-15465 ◽  
Author(s):  
Xue Cheng ◽  
Weibin Cai ◽  
Xiaohan Chen ◽  
Zhen Shi ◽  
Jiding Li
Keyword(s):  
Graphene Oxide ◽  
Composite Membrane ◽  
Separation Factor ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Ethanol Dehydration

The separation factor of the composite GOP-2.0 membranes could reach 3 059, which is 16 times higher than PVA membranes.

High Performance Poly (Vinyl Alcohol)-Zeolite LTA Composite Membranes for Ethanol Dehydration Pervaporation

2011 ◽  
Vol 287-290 ◽  
pp. 2053-2056
Author(s):  
Zhen Huang ◽  
Wei Juan Jiang ◽  
Xiao Han Shi ◽  
Li Jun Teng
Keyword(s):  
Separation Factor ◽  
Vinyl Alcohol ◽  
High Performance ◽  
Composite Membranes ◽  
Ethanol Solution ◽  
Poly Vinyl Alcohol ◽  
Processing Temperature ◽  
Ethanol Dehydration ◽  
Zeolite Lta ◽  
Separation Performances

Three-layered zeolite LTA-filled poly (vinyl alcohol) (PVA) composite membranes have been fabricated for water removal from highly concentrated ethanol solution by means of pervaporation. Higher separation factor and higher fluxes are both achieved after adding zeolite 3A, 4A and 5A. Through evaluating separation factor and permeation flux, separation performances of the composite membranes are elucidated in terms of the zeolite pore size and processing temperature.

scholarly journals Collation Efficiency of Poly(Vinyl Alcohol) and Alginate Membranes with Iron-Based Magnetic Organic/Inorganic Fillers in Pervaporative Dehydration of Ethanol

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4152
Author(s):  
Gabriela Dudek ◽  
Roman Turczyn ◽  
David Djurado
Keyword(s):  
Separation Factor ◽  
Vinyl Alcohol ◽  
Chemical Properties ◽  
Poly Vinyl Alcohol ◽  
Ethanol Dehydration ◽  
Iron Particles ◽  
Physico Chemical ◽  
Iron Based ◽  
Inorganic Fillers ◽  
Best Parameters

Hybrid poly(vinyl alcohol) and alginate membranes were investigated in the process of ethanol dehydration by pervaporation. As a filler, three types of particles containing iron element, i.e., hematite, magnetite, and iron(III) acetyloacetonate were used. The parameters describing transport properties and effectiveness of investigated membranes were evaluated. Additionally, the physico-chemical properties of the resulting membranes were studied. The influence of polymer matrix, choice of iron particles and their content in terms of effectiveness of membranes in the process of ethanol dehydration were considered. The results showed that hybrid alginate membranes were characterized by a better separation factor, while poly(vinyl alcohol) membranes by a better flux. The best parameters were obtained for membranes filled with 7 wt% of iron(III) acetyloacetonate. The separation factor and pervaporative separation index were equal to 19.69 and 15,998 g⋅m−2⋅h−1 for alginate membrane and 11.75 and 14,878 g⋅m−2⋅h−1 for poly(vinyl alcohol) membrane, respectively.

High barrier graphene oxide nanosheet/poly(vinyl alcohol) nanocomposite films

2012 ◽  
Vol 409-410 ◽  
pp. 156-163 ◽  
Author(s):  
Hua-Dong Huang ◽  
Peng-Gang Ren ◽  
Jun Chen ◽  
Wei-Qin Zhang ◽  
Xu Ji ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Vinyl Alcohol ◽  
Nanocomposite Films ◽  
Poly Vinyl Alcohol ◽  
Graphene Oxide Nanosheet

Effect of silver-nanoparticles generated in poly (vinyl alcohol) membranes on ethanol dehydration via pervaporation

2019 ◽  
Vol 27 (7) ◽  
pp. 1595-1607 ◽  
Author(s):  
Asmaa Selim ◽  
Andras Jozsef Toth ◽  
Daniel Fozer ◽  
Eniko Haaz ◽  
Nóra Valentínyi ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Ethanol Dehydration
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