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Title: Method for extracting metals from aqueous waste streams for long term storage

Abstract

A liquid-liquid extraction method for removing metals and hydrous metal colloids from waste streams is provided wherein said waste streams are contacted with a solvent system containing a water-in-oil microemulsion wherein the inverted micelles contain the extracted metal. A silicon alkoxide, either alone or in combination with other metal alkoxide compounds is added to the water-in-oil microemulsion, thereby allowing encapsulation of the extracted metal within a silicon oxide network. Lastly, the now-encapsulated metal is precipitated from the water-in-oil microemulsion phase to yield aggregates of metal-silicate particles having average individual particle sizes of approximately 40 nanometers. 2 figs.

Inventors:
Issue Date:
Research Org.:
Univ. of Chicago, IL (United States)
OSTI Identifier:
27699
Patent Number(s):
5,395,532
Application Number:
PAN: 8-098,920
Assignee:
Dept. of Energy, Washington, DC (United States)
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 7 Mar 1995
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 54 ENVIRONMENTAL SCIENCES; METALS; SOLVENT EXTRACTION; ENCAPSULATION; PRECIPITATION; LIQUID WASTES; WASTE PROCESSING; REMOVAL; MICROEMULSIONS; ALKOXIDES; SILICON COMPOUNDS

Citation Formats

Chaiko, D J. Method for extracting metals from aqueous waste streams for long term storage. United States: N. p., 1995. Web.
Chaiko, D J. Method for extracting metals from aqueous waste streams for long term storage. United States.
Chaiko, D J. Tue . "Method for extracting metals from aqueous waste streams for long term storage". United States.
@article{osti_27699,
title = {Method for extracting metals from aqueous waste streams for long term storage},
author = {Chaiko, D J},
abstractNote = {A liquid-liquid extraction method for removing metals and hydrous metal colloids from waste streams is provided wherein said waste streams are contacted with a solvent system containing a water-in-oil microemulsion wherein the inverted micelles contain the extracted metal. A silicon alkoxide, either alone or in combination with other metal alkoxide compounds is added to the water-in-oil microemulsion, thereby allowing encapsulation of the extracted metal within a silicon oxide network. Lastly, the now-encapsulated metal is precipitated from the water-in-oil microemulsion phase to yield aggregates of metal-silicate particles having average individual particle sizes of approximately 40 nanometers. 2 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {3}
}