Table Of Content

304 Contents Volume 75 (1992) Vol. 75, Nos. 1+2 (December 16, 1992) Facilitated diffusion in immobilized liquid membranes: Experimental verification of the “jumping” mechanism and percolation threshold in membrane transport A.A. Kalachev, L.M. Kardivarenko, N.A. Platé and V.V. Bagreev (Moscow, Russia) .0..........:cccccccccssssssseeseeesceeseeesceeeceeesceescenes l Barriers to flow in semicrystalline ionomers. A procedure for preparing melt-processed perfluorosulfonate ionomer films and membranes R.B. Moore, K.M. Cable and T.L. Croley (Hattiesburg, MS, USA) ..........:.cccsssssccsssssssssssssssssssssssseesesssesssesesssesssssseseacessscessseeees 7 Gas transport in polyurethane-polystyrene, interpenetrating polymer network membranes. II. Effect of crosslinked state and annealing D.S. Lee, W.K. Kang (Kyungki, S. Korea), J.H. An (Kyungbuk, S. Korea) and S.C. Kim (Seoul, S. Korea) ............0000000000 15 General treatment of liquid-phase boundary layer resistance in the pervaporation of dilute aqueous organics through tubular membranes ns SE ho, Ie INI IEE III Dc «sso sancctinssseesncinsnsvnsincibbintnnbubsnennbspsenseenssovonsenseseupectsesennnensnosennaneopenaennnies 29 Plasticization effects on the gas permeability and permselectivity of polymer membranes I ER SEIT tee heldm mbepenadinslnblingihdeslsbnsbinbabbeenenasinpecitenatnccennnsentnnnnecsenatiiitbenentiaiiididainiithdabebiieasds 47 Specific membrane transport of copper(II) ion by a cooperative carrier composed of 1,7-diaza-15-crown-5 and palmitic acid If nelcnn nslnpntnnsanonsnnennnntonness enenedhionoceenallusiulll 61 Critical displacement pressure of a supported liquid membrane F.F. Zha, A.G. Fane, C.J.D. Fell and R.W. Schofield (Kensington, N.S.W., Australia ). ....0....c:cccccccccccesscessceesceessecesseeesceeseeeeecees 69 Modification of Daramic, microporous separator, for redox flow battery applications S.C. Chieng, M. Kazacos and M. Skyllas-Kazacos (Kensington, N.S.W., Australia) ...........ccccccccsccsssscssscssecsessesesesescscecveacscaeenes 81 Pervaporation of ethanol/water mixtures using novel hydrophobic membranes containing polydimethylsiloxane es enn, Sn, TOUnIORORORNGIIOR EE GU, “PURINE 0U II GUIIIIINITsscccssepetteeneestennsibceninenscasseassdeueeotucndnsonemnsensnnessnieosssenveenosseocseseoeee 93 Electrokinetic transport of amino acids through a cation exchange membrane InP IT rT Tenung eNuhe ugm Nanas be aahindcsanecasiseesnecseeotionsceoeese nnennodenennusmeanenneananen 107 Generalized microscopic mechanism of facilitated transport in fixed site carrier membranes I A __.sseutisunsbusonnsesstonseneocegoustenontoneanenens 121 Pharmaceutical product recovery using a hollow fiber contained liquid membrane: A case study IE BEER SEEDER ESET E EE Oe OE a eS nT ey eer eae 131 A new class of oxygen selective chemically driven nonporous ceramic membranes. Part I. A-site doped perovskites See es ie ny GE rk, SID SII, LAL, T1T TIINB n... scsssosnscnsssnitnntesstsceonsenstonestssisbenesnnsssinesconensesnensesebnesasoooosnenteoneseecs 151 Surface characterization of ethylene-vinyl alcohol copolymer membranes prepared under various conditions iy PEIN, Tec DUURUUNGED GEREN Ur MeUNONINIIED SUEINEIIN) GITIIIIIIIDD . <sccccosssesssstnnessnesoneerpsceeesctenssssensenunononesoosbsonsesianeninesenesencneenesnineeneneensenes 163 Plasma deposition of vinyl acetate onto Nylon-4 membrane for pervaporation and evapomeation separation of aqueous alcohol mixtures es Og GID CURIE a=1 h. EO SEIN, TIMIIIIIIIED ocnscericssnecesesstensrecsnsnasonsnscnsnncssnstinsseniieiibcetnintbonensnssseetenssiiaannancsseuneattidiinennans 171 Development of asymmetric hollow fibers from polyimides for air separation T.-S. Chung, E. Ronald Kafchinski and P. Foley (Summit, NJ, USA) .............c:ccsccccsccsssssssscessscsssceeccseseessecseceesseeseecessesesecesecees 181 An investigation on the configuration of inserts in tubular ultrafiltration module to control concentration polarization V. Mavrov, N.D. Nikolov, M.A. Islam and J.D. Nikolova (Bourgas, Bulgaria) ...........00..ccccccccccesscessceesseeesceesseesseeesseesseeeeceeeeeeeees 197 ELLOS «MEI TE SN SEES SC So EE OS MOS BES OM Se HRC eR TA eee BLL 203 305 Vol. 75, No. 3 (December 23, 1992) Turbulence promoter geometry: its influence on salt rejection and pressure losses of a composite-membrane spiral wound module ae ee ate PR iin Cr TI iin kcal aaa isc ccencneesecsiciisiinitiacieiiectenicasitiiaenatiniiaaalitiaiamiiniisiiin The detection of asymmetry in homogeneous membranes: Demonstration on a carbon molecular sieve membrane H. Tobias, A. Amar, S. Saguee and A. Soffer (Beer Sheva, Israel) ...............sccsscssssssssessesseesesnesteseeneesesneeseseeeseanenseensensensesseasensenees Adsorption, permeation, and diffusion of gases in microporous membranes. I. Adsorption of gases on microporous glass membranes M. Bhandarkar, A.B. Shelekhin, A.G. Dixon and Y.H. Ma (Worcester, MA, USA) ...........ccccccccscsscsssceessseeseceeeeeeseeseeseceeeeeeseneees Adsorption, permeation, and diffusion of gases in microporous membranes II. Permeation of gases in microporous glass membranes A.B. Shelekhin, A.G. Dixon and Y.H. Ma (Worcester, MA, USA) ................ccccsccsssssssssccssssssssesssssseeesessssesessecsescssssnscsseseesensesesseees A generalized model for the transport of gases in porous, non-porous, and leaky membranes. I. Application to single gases R. Datta, S. Dechapanichkul, J.S. Kim, L.Y. Fang and H. Uehara (lowa City, IA, USA)... ccc cecceeseeeeseeeeeeeeesseeeenesnsenens On the nitrate and monovalent cation selectivity of ion exchange membranes used in drinking water purification M. Oldani, E. Killer, A. Miquel and G. Schock (Baden, Switzerland ) ................ccccssessseesseeseesseeeseeeseeesseeseeeseeeseeeeeeneeeeeeenseennennneees Removal of p-nitrophenol from aqueous solution by membrane-supported solvent extraction C.J. Tompkins, A.S. Michaels and S.W. Peretti (Raleigh, NC, USA) .0...........ccccccsessseesceessesseessseeseeesseesteessesseeseeeeeeeseeeseeeeeeneeenees Rapid Communication Effects of protonation on the transport of hydrophobic nitrogen heterocycles through perfluorosulfonate ionomer membranes pte RO I FS 8 | eSeee ee NE SNE TN Irn III... earn neinigesinbinbaeetinileenssaisbiebnliieesiadensemetibsihendehesisestiohiiniedeneesinaiddnnanntibensiteniiabandgtiesiiieaibiibieniddaasintanhbadniai DUTT cscs isesaesnehenmsehtrei einen drain ie bin cincameiiiaetsentinandbaiiaabateiaieiiaiNaitiieianbiiiedaiaiibiaias PD SS\ TL, a NSD Te OTE Ee Ne RENE TTIEEEE TORII TI: © STII Dc :oa cscinvensecnnnsioensneunsienncsensensenininenidneeiantenssasiiantenoentbbenetensnitenstslebeeninibinadehaemnenntiaetnenniahidapabtinlenbebaiaianitl LS ee