Specialist Group on Membrane Technology - IWA

LIST OF PATENTS IN MEMBRANE AND WATER TREATMENTNo. Document Document Title1 5935440Membrane(1999)A process for treatment of zeolite membranes to improve performance which2 6383563(2002)3 US20030036085(2003)4 4217200(1980)5 6054085(1998)6 US20080078290(2008)7 5605631(1995)8 4866099(1989)9 4820419(1989)10 US20100260990(2010)11 4920193(1990)12 5030672(1991)comprises contacting the membrane with a silicic acid or a mixture of silicic acids.MembraneA process for treating zeolite membranes to improve their performance and toimprove their coherence consists of forming a film of zeolite material on a poroussupport to form a zeolite membrane,...MembranesDisclosed are smooth surfaced porous membranes having one or more advantagessuch as low autofluorescence, thermal-cyclability, especially under humidconditions, and three-dimensional binding...MembranesAccording to the present invention there is provided a novel type of membraneunit for use in electrodialysis comprising a heat-sealable frame framing andforming an integral entity with an...MembraneA method of producing a membrane comprises providing a solution containing aplurality of polymers in a non-aqueous liquid solvent, at least one of the polymers(hereinafter referred to as the...MembraneA membrane suitable for separating a gas, in particular carbon dioxide, from a gasmixture containing the gas is provided by a blend of polyvinyl alcohol (PVA) andpolyvinylamine (PVAm).MembranesNovel membranes comprise crystals of a zeo-type material carried by a poroussupport. The crystal growth of the zeo-type material is essentially continuous overthe pores of the support and the...MembraneA sulphonated aromatic polymer containing repeating units (Ar-Y) (where Y isSO 2 and/or CO), where at least half of groups Ar contain a group SO 3 M and Mis l/m of a polyvalent metal cation in...MembranesSolutions of sulphonated polyaryletherketones in a solvent mixture of at least threeliquids or low melting solids which are non-solvents or poor solvents for thepolymer, can be used to produce...MembranesA membrane comprising a base layer (A) and a top layer (B), where the base layer(A) comprises a heterophasic composition (I) containing the following polymercomponents, all percent amounts being...MembranesAn asymmetric membrane formed from a sulphonated polyarylethersulphone hasa salt rejection of at least 99%. Alternatively, a membrane has a good salt rejectionand an acceptable water flux such...MembranesAn asymmetric membrane formed from a sulphonated polyarylethersulphone hasa salt rejection of at least 99%. Alternatively, a membrane has a good salt rejectionand an acceptable water flux such..._______________________________________________________________________________________________________IWA <strong>Specialist</strong> <strong>Group</strong> on Membrane Technology: 27Newsletter No. 1, June 2011