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Title: Method for removing organic liquids from aqueous solutions and mixtures

Abstract

A method for removing organic liquids from aqueous solutions and mixtures. The method employs any porous material preferably in granular form and having small pores and a large specific surface area, that is hydrophobic so that liquid water does not readily wet its surface. In this method, organics, especially organic solvents that mix with and are more volatile than water, are separated from aqueous solution by preferentially evaporating across the liquid/solid boundary formed at the surfaces of the hydrophobic porous materials. Also, organic solvents that are immiscible with water, preferentially wet the surfaces of the hydrophobic material and are drawn within the porous materials by capillary action.

Inventors:
; ;
Issue Date:
Research Org.:
Univ. of California, Oakland, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1174780
Patent Number(s):
6709600
Application Number:
09/957,854
Assignee:
University Of California, The Regents Of
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
C - CHEMISTRY C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Hrubesh, Lawrence W., Coronado, Paul R., and Dow, Jerome P. Method for removing organic liquids from aqueous solutions and mixtures. United States: N. p., 2004. Web.
Hrubesh, Lawrence W., Coronado, Paul R., & Dow, Jerome P. Method for removing organic liquids from aqueous solutions and mixtures. United States.
Hrubesh, Lawrence W., Coronado, Paul R., and Dow, Jerome P. Tue . "Method for removing organic liquids from aqueous solutions and mixtures". United States. https://www.osti.gov/servlets/purl/1174780.
@article{osti_1174780,
title = {Method for removing organic liquids from aqueous solutions and mixtures},
author = {Hrubesh, Lawrence W. and Coronado, Paul R. and Dow, Jerome P.},
abstractNote = {A method for removing organic liquids from aqueous solutions and mixtures. The method employs any porous material preferably in granular form and having small pores and a large specific surface area, that is hydrophobic so that liquid water does not readily wet its surface. In this method, organics, especially organic solvents that mix with and are more volatile than water, are separated from aqueous solution by preferentially evaporating across the liquid/solid boundary formed at the surfaces of the hydrophobic porous materials. Also, organic solvents that are immiscible with water, preferentially wet the surfaces of the hydrophobic material and are drawn within the porous materials by capillary action.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {3}
}

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Works referenced in this record:

Solvent removal from water with hydrophobic aerogels
journal, June 2001