Pervaporation of ethanol aqueous solution by polydimethylsiloxane/polyphosphazene nanotube nanocomposite membranes

Abstract Polyphosphazene nanotubes (PZSNTs) were incorporated into polydimethylsiloxane (PDMS) membranes to form nanocomposite membranes. SEM characterization showed that PZSNTs were well dispersed in PDMS. The nanocomposite membranes exhibited higher separation factor for water–ethanol mixture compared with PDMS membranes. As PZSNT content increased, the selectivity increased and permeation flux increased at first to a maximum value and then almost kept the same. The decrease of nanotube diameter caused an increase of permeation flux and separation factor. The effects of temperature and feed solution concentration on pervaporation properties were also investigated. Sorption measurements explained the pervaporation results well.

[1]  Leland M. Vane,et al.  Stability of MFI zeolite-filled PDMS membranes during pervaporative ethanol recovery from aqueous mixtures containing acetic acid , 2007 .

[2]  Mason K. Harrup,et al.  Pervaporation of water–dye, alcohol–dye, and water–alcohol mixtures using a polyphosphazene membrane , 2002 .

[3]  W. Yuan,et al.  One‐Pot Synthesis of Poly(cyclotriphosphazene‐co‐4,4′‐sulfonyldiphenol) Nanotubes via an In Situ Template Approach , 2006 .

[4]  Zhongyi Jiang,et al.  Novel ploy(vinyl alcohol)/carbon nanotube hybrid membranes for pervaporation separation of benzene/cyclohexane mixtures , 2007 .

[5]  Hideki Yamada,et al.  Pervaporation of ethanol/water mixtures using novel hydrophobic membranes containing polydimethylsiloxane , 1992 .

[6]  Ivo F. J. Vankelecom,et al.  INFLUENCE OF ZEOLITES IN PDMS MEMBRANES - PERVAPORATION OF WATER/ALCOHOL MIXTURES , 1995 .

[7]  B. Tang,et al.  Pervaporation of organic liquid-water mixtures through substituted polyacetylene membranes , 1990 .

[8]  K. Ishihara,et al.  Pervaporation of alcohol/water mixtures through poly[1‐(trimethylsilyl)‐1‐propyne] membrane , 1986 .

[9]  Ivo F. J. Vankelecom,et al.  Incorporation of Hydrophobic Porous Fillers in PDMS Membranes for Use in Pervaporation , 1997 .

[10]  Fusheng Pan,et al.  Novel nanocomposite pervaporation membranes composed of poly(vinyl alcohol) and chitosan-wrapped carbon nanotube , 2007 .

[11]  F. J. García Alonso,et al.  A simplified and convenient laboratory-scale preparation of 14N or 15N high molecular weight poly(dichlorophosphazene) directly from PCl5. , 2003, Chemistry.

[12]  Xiaobin Huang,et al.  Fully Crosslinked Poly[cyclotriphosphazene-co-(4,4′-sulfonyldiphenol)] Microspheres via Precipitation Polymerization and Their Superior Thermal Properties , 2007 .

[13]  Leland M. Vane,et al.  Hydrophobic zeolite-silicone rubber mixed matrix membranes for ethanol-water separation: Effect of zeolite and silicone component selection on pervaporation performance , 2008 .

[14]  Leland M. Vane,et al.  A review of pervaporation for product recovery from biomass fermentation processes , 2005 .

[15]  B. Adnadjevic,et al.  Effect of different physicochemical properties of hydrophobic zeolites on the pervaporation properties of PDMS-membranes , 1997 .

[16]  D. V. Krevelen,et al.  Properties of polymers, their estimation and correlation with chemical structure , 1972 .

[17]  Zhibing Zhang,et al.  Composite PDMS membrane with high flux for the separation of organics from water by pervaporation , 2004 .

[18]  Andrew J. McAloon,et al.  Ethanol production by continuous fermentation–pervaporation: a preliminary economic analysis , 2000 .

[19]  Xiaobin Huang,et al.  One-pot synthesis of porous cyclomatrix-type polyphosphazene nanotubes with closed ends via an in situ template approach , 2008 .

[20]  Ivo F. J. Vankelecom,et al.  Incorporation of nano-sized zeolites in membranes , 2000 .

[21]  Cristiano Piacsek Borges,et al.  Economic analysis of ethanol and fructose production by selective fermentation coupled to pervaporation: effect of membrane costs on process economics , 2002 .

[22]  Xiaobin Huang,et al.  Pervaporation of ethanol aqueous solution by polyphosphazene membranes: Effect of pendant groups , 2009 .

[23]  Wanqin Jin,et al.  Polydimethylsiloxane (PDMS)/Ceramic Composite Membrane with High Flux for Pervaporation of Ethanol−Water Mixtures , 2007 .

[24]  E. Békássy-Molnár,et al.  Comparison of pervaporation of different alcohols from water on CMG-OM-010 and 1060-SULZER membranes , 2002 .

[25]  M. Kariduraganavar,et al.  Preparation of zeolite‐incorporated poly(dimethyl siloxane) membranes for the pervaporation separation of isopropyl alcohol/water mixtures , 2005 .