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Title: Method of separating organic contaminants from fluid feedstreams with polyphosphazene membranes

Abstract

A method is provided for separating halogenated hydrocarbons from a fluid feedstream. The fluid feedstream is flowed across a first surface of a polyphosphazene semipermeable membrane. At least one halogenated hydrocarbon from the fluid feedstream permeates through the polyphosphazene semipermeable membrane to a second opposed surface of the semipermeable membrane. Then the permeated polar hydrocarbon is removed from the second opposed surface of the polyphosphazene semipermeable membrane. Outstanding and unexpected separation selectivities on the order of 10,000 were obtained for methylene chloride when a methylene chloride in water feedstream was flowed across the polyphosphazene semipermeable membrane in the invented method.

Inventors:
 [1];  [2]
  1. Milford, MA
  2. Idaho Falls, ID
Publication Date:
Research Org.:
EG & G IDAHO INC
OSTI Identifier:
867863
Patent Number(s):
US 5022996
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
AC07-76ID01570
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; separating; organic; contaminants; fluid; feedstreams; polyphosphazene; membranes; provided; halogenated; hydrocarbons; feedstream; flowed; surface; semipermeable; membrane; hydrocarbon; permeates; opposed; permeated; polar; removed; outstanding; unexpected; separation; selectivities; 10; 000; obtained; methylene; chloride; water; invented; polyphosphazene semipermeable; semipermeable membrane; halogenated hydrocarbons; permeable membrane; organic contaminant; organic contaminants; halogenated hydrocarbon; methylene chloride; opposed surface; separating organic; fluid feedstream; /210/

Citation Formats

McCaffrey, Robert R, and Cummings, Daniel G. Method of separating organic contaminants from fluid feedstreams with polyphosphazene membranes. United States: N. p., 1991. Web.
McCaffrey, Robert R, & Cummings, Daniel G. Method of separating organic contaminants from fluid feedstreams with polyphosphazene membranes. United States.
McCaffrey, Robert R, and Cummings, Daniel G. Tue . "Method of separating organic contaminants from fluid feedstreams with polyphosphazene membranes". United States. https://www.osti.gov/servlets/purl/867863.
@article{osti_867863,
title = {Method of separating organic contaminants from fluid feedstreams with polyphosphazene membranes},
author = {McCaffrey, Robert R and Cummings, Daniel G},
abstractNote = {A method is provided for separating halogenated hydrocarbons from a fluid feedstream. The fluid feedstream is flowed across a first surface of a polyphosphazene semipermeable membrane. At least one halogenated hydrocarbon from the fluid feedstream permeates through the polyphosphazene semipermeable membrane to a second opposed surface of the semipermeable membrane. Then the permeated polar hydrocarbon is removed from the second opposed surface of the polyphosphazene semipermeable membrane. Outstanding and unexpected separation selectivities on the order of 10,000 were obtained for methylene chloride when a methylene chloride in water feedstream was flowed across the polyphosphazene semipermeable membrane in the invented method.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}

Patent:

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