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):
- 5395532
- 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 = {Tue Mar 07 00:00:00 EST 1995},
month = {Tue Mar 07 00:00:00 EST 1995}
}
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