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Knowhow offering
Title	Membranes for gas/liquid separation
Knowhow is available for	Thin film composite membranes that are used for gas separation, pervaporation (dehydration of organics) and aroma recovery. Uses include producing oxygen enriched air for medical applications and other medical and industrial applications
Summary	A method for preparation of aromatic polyester based membranes from readily available raw materials by conventional methods, with high yield is described. These membranes can be used for separating various gases (e.g., hydrogen from methane, helium from nitrogen, oxygen from nitrogen etc.) A method for preparation of PDMS based thin film composite membranes that can be used for pervaporation/perstraction.
Advantages	Gas separation membranes • Made from readily available raw materials, conventional methods of preparation (low cost), with high yield • Can be easily processed (the polymers used are soluble in common solvents) • Possess a very good combination of gas selectivity and permeability • Very stable at high temperatures Pervaporation( alcohol dehydration, aroma recovery) /Perstraction (recovery of nonvolatile acids) membranes • High fluxes, high selectivity • Operational simplicity • Low energy requirements
Knowhow is listed under following categories
Knowhow from	CSIR-NCL, Pune
Scientific/ engineering subject areas	Chemical sciences & engineering
Investor interest categories	Materials Technology including Nanotechnology ; Others
Industries	Polymers, Plastics, Elastomers, Fibers, Adhesives, Paints, Specialty Polymers, Natural Polymers, Fibers and Leather ; Natural Resources, Water, Environment, Sustainability Others
Customer categories and nature of business	Businesses and other industries (B2B) ; Others
Technology readiness levels	TRL C: Prototype developed and tested; technology demonstrated at pilot scale
Year of development	1997
Whether patents are part of this offering ?	Yes
Related documents:
Publications	Lohokare, H.R. et al. (2006) Effect of Support Material on Ultrafiltration Membrane Performance, Journal of Applied Polymer Science, Vol. 99, 3389–3395   Kharul, U.K. (2004)Oxygen enrichment of air and drinking water purification using membrane technology, J. of Rural Tech. Vol 1, Num 3, 119-124   Lohokare, H. K. et al. (2008) Effective arsenic removal using polyacrylonitrile-based ultrafiltration (UF) membrane, Journal of Membrane Science, 320, 159–166   Kharul, U.K. & Chendake, Y. J. (2012) Transport of inorganic acids through polybenzimidazole (PBI) based membranes by chemo-dialysis, Desalination and Water Treatment, 38, 96-103
Write- ups and marketing documents	Tech marketing document
Database reference
Database record number	20130929103456
Date of upload	30 / Sep / 2013
Date of update	4 / Oct / 2013
URL to site when communicating about this knowhow	http://nclinnovations.org/khdb/viewrecord.php?recordno=20130929103456
Request for this technology	Click here for Request Form