Specialist Group on Membrane Technology - IWA

37 7677398(2010)38 5326449(1994)39 US20080269417(2008)40 5147549(1992)41 5281337( 1994)42 5259950(1995)43 US20080203019(2008)44 US20060157893(2006)45 US20050000353(2005)46 US20050284814(2005)47 US20090068688(2009)48 6887300(2005)Process for improving membranesThe invention provides a process for improving the antifouling properties and forincreasing the selectivity of commercial composite polyamide nanofiltration (NF)and reverse osmosis (RO) membranes...Composite membraneA sensor device for measuring the concentration of an analyte in solution isdescribed. The device includes a composite membrane which incorporates aporous membrane containing an immobilized...Process for Improving MembranesThe invention provides a process for improving the antifouling properties and forincreasing the selectivity of commercial composite polyamide nanofiltration (NF)and reverse osmosis (RO) membranes...Membrane separation processMembrane separation process is improved by use, as a support membrane, of apolyacrylonitrile membrane the surface of which has been oxygen-plasma treatedwhereby at least a portion of the surface...Membrane separation processMembrane separation process is improved by use, as a support membrane, of (i) apolyacrylonitrile membrane on which at least a portion of the surface --CN groupshave been hydrolyzed to --COOH...Composite membraneA composite membrane excelling in organic solvent resistance, heat resistance andorganic vapor resistance is disclosed. The composite membrane of the presentinvention comprises a porous membrane...Membrane batch filtration processA membrane batch filtration process has a step of reducing the water level in thetank by permeation prior to emptying the tank to reduce the volume of waterdrained after each batch. Permeation...PTFE membraneA method for improving the dimensional stability of PTFE membranes by theapplication of elevated temperature and elevated pressure to a PTFE membrane.The process reduces and/or eliminates the...Cyclic membrane separation processA cyclic process for controlling environmental emissions of volatile organiccompounds (VOC) from vapor recovery in storage and dispensing operations ofliquids maintains a vacuum in the storage...Ultrafiltration membrane and processAn inorganic membrane suitable for ultrafiltration or nanofiltration, and methodsfor making and using the membrane. The membrane has a organic polymerdeposited on the feed surface, but is not...PVDF membranesThe invention provides a method of treating a polyvinyl difluoride (PVDF)membrane comprising: (a) contacting said membrane with an alcohol and awetting agent; and (b) drying said membrane.Cyclic membrane separation processA cyclic process for controlling environmental emissions of volatile organiccompounds (VOC) from vapor recovery in storage and dispensing operations ofliquids maintains a vacuum in the storage..._________________________________________________________________________________________________________30IWA <strong>Specialist</strong> <strong>Group</strong> on Membrane Technology:Newsletter No. 1, June 2011