Separation Strategies for Processing of Dilute Liquid Streams

Table 2

Pervaporation performance of different types of membranes for the separation of water-isopropanol mixture with 10 wt. % feed water at 30°C.

Membrane type	Selectivity	Ref.
PVA	77	[166]
PVA/PMMA blend membrane (5% PMMA)	400	[166]
PVA-PMA blend membrane (4% PMA)	2342	[167]
Pristine/blend/grafted sodium alginate membranes
Sodium alginate (pristine)	650	[165]
Poly(acrylamide) grafted sodium alginate	100	[165]
Sodium alginate/PVA blend	580	[165]
Sodium alginate/pAAm grafted GG blend	890	[165]
Sodium alginate + 5 wt.% PVA + 10 wt.% PEG	3600	[165]
Mixed matrix membranes of sodium alginate
MCM-41 (10 wt.%) filled sodium alginate	30,000	[165]
SBA-15 (10 wt.%) filled sodium alginate	∞	[165]
Fe-SBA-15 (10 wt.%) filled sodium alginate	∞	[165]
Na^+MMT (10 wt.%) filled sodium alginate	∞	[165]
AlPO4-5 (20 wt.%) filled sodium alginate	69,000	[165]
Al-MCM-41 (20 wt.%) filled sodium alginate	∞	[165]

PVA: poly (vinyl alcohol); PMMA: poly(methyl methacrylate); PMA: phosphomolybdic acid; NaAlg: sodium alginate; pAAm: poly(acrylamide); GG: guar gum; PEG: poly(ethylene glycol); Na⁺MMT: sodium montmorillonite; AlPO₄-5: aluminophosphate.