Organic fluid permeation through fluoropolymer membranes

Nemser, Stuart M.; Kosaraju, Praveen; Bowser, John

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Title: Organic fluid permeation through fluoropolymer membranes

Abstract

Separation of the components of liquid mixtures is achieved by contacting a liquid mixture with a nonporous membrane having a fluoropolymer selectively permeable layer and imposing a pressure gradient across the membrane from feed side to permeate side. Unusually high transmembrane flux is obtained when the membrane is subjected to one or more process conditions prior to separation. These include (a) leaving some residual amount of membrane casting solvent in the membrane, and (b) contacting the membrane with a component of the mixture to be separated for a duration effective to saturate the membrane with the component.

Inventors:: Nemser, Stuart M.; Kosaraju, Praveen; Bowser, John

Issue Date:: Tue Jul 14 00:00:00 EDT 2015

Research Org.:: CMS Technologies Holdings, Inc., Newport, DE (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1193398

Patent Number(s):: 9079138

Application Number:: 13/279,904

Assignee:: CMS Technologies Holdings, Inc. (Newport, DE)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
B01D2325/027 - Nonporous membranes
B01D61/027 - {Nanofiltration
B01D67/0013 - {Casting processes
B01D67/0088 - {Physical treatment with compounds, e.g. swelling, coating or impregnation
B01D71/32 - containing fluorine atoms
B01D71/36 - Polytetrafluoroethene

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DOE Contract Number:: SC0003561

Resource Type:: Patent

Resource Relation:: Patent File Date: 2011 Oct 24

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE

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                    Nemser, Stuart M., Kosaraju, Praveen, and Bowser, John. Organic fluid permeation through fluoropolymer membranes.  United States: N. p., 2015. 
        Web.

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                    Nemser, Stuart M., Kosaraju, Praveen, & Bowser, John. Organic fluid permeation through fluoropolymer membranes.  United States.

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                    Nemser, Stuart M., Kosaraju, Praveen, and Bowser, John. Tue .  
        "Organic fluid permeation through fluoropolymer membranes".  United States.  https://www.osti.gov/servlets/purl/1193398.

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@article{osti_1193398,

  title        = {Organic fluid permeation through fluoropolymer membranes},

  author       = {Nemser, Stuart M. and Kosaraju, Praveen and Bowser, John},

  abstractNote = {Separation of the components of liquid mixtures is achieved by contacting a liquid mixture with a nonporous membrane having a fluoropolymer selectively permeable layer and imposing a pressure gradient across the membrane from feed side to permeate side. Unusually high transmembrane flux is obtained when the membrane is subjected to one or more process conditions prior to separation. These include (a) leaving some residual amount of membrane casting solvent in the membrane, and (b) contacting the membrane with a component of the mixture to be separated for a duration effective to saturate the membrane with the component.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Jul 14 00:00:00 EDT 2015},

  month        = {Tue Jul 14 00:00:00 EDT 2015}

}

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Works referenced in this record:

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Separations with Highly Selective Fluoropolymer Membranes
patent-application, November 2011

Campos, Daniel; Lazzeri, Jonathan; Nemser, Stuart M.
US Patent Application 13/143081; 20110266220
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20110266220