Poly(vinyl alcohol)–zeolite T mixed matrix composite membranes for pervaporation separation of water+1,4-dioxane mixtures

Polymer-nanoinorganic particles composite membranes: a brief overview

“…The CSHM presents superior separation behaviors with a flux of 1265g$h -1 $m -2 and separation factor of 30.1 in PV separation of 70 wt-% MeOH in feed at 50°C. Veerapur et al[74] synthesized poly(vinyl alcohol)-zeolite T mixed matrix composite membranes and tested PV separation of water + 1,4-dioxane mixtures. Addition of zeolite T particles into PVA membrane improves permeation flux and is responsible for the selective removal of water from 1,4-dioxane to the extent of 99.47% on the permeate side.…”

Pervaporation study of ethylene glycol dehydration through synthesized (PVA–4A)/polypropylene mixed matrix composite membranes

“…Total permeation flux ( J ), water separation factor (α), and PV separation index (PSI) were calculated using the following equations [25]: where W , A, and t represent the weight of permeate (g), the effective membrane area (m 2 ), and the operating time (h), respectively. X and Y are weight fractions of water or EG in feed and permeate, respectively.…”

“…The PV results of dehydration of water–alcohol mixtures using polymer–zeolite MMMs have been published in literature [15, 20–27]. The results revealed that membranes comprised of zeolite often have higher separation factor [15, 20–24, 26], while in some cases, both separation factor and permeation flux increase [15, 21, 24, 25]. Most of the results are related to dehydration of ethanol mixtures [20, 22, 26], and no MMM has been examined until now for dehydration of water–EG mixtures.…”

Sorption and pervaporation results of clinoptilolite filled poly(vinylalcohol) membrane prepared for dehydration of aqueous organic mixtures

“…[6,16,17] Organic-inorganic hybrid structure formation of a composite membrane brings together the high separation performance of adsorptive inorganic materials and the convenient membrane preparation properties of organic materials. [8,16] Huang et al [18] stated that compared with pure polymeric membranes, zeolite-polymer composite membranes have a better operational behaviour because of the adsorption and diffusion through zeolite pores and also the transport along the boundaries between zeolite crystallines and polymer matrix. Ideally, the zeolite particles increase the mobility of the component which selectively permeates from the polymeric membrane, while they decrease the mobility of the other less permeating component.…”

“…[16,24] However, PVA is chemically crosslinked to make it resistant to water as it has the poor stability and the large swelling capacity in aqueous solution. [25,26] Gao et al [27] used PVA membranes filled with KA, NaA, CaA and NaX zeolites (11 wt%).…”