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 manometers.
- Inventors:
- Issue Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 94654
- Patent Number(s):
- 8098920
- Application Number:
- ON: DE95017133; PAN: 8-098,920
- Assignee:
- Dept. of Energy
- Patent Classifications (CPCs):
-
G - PHYSICS G06 - COMPUTING G06T - IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- DOE Contract Number:
- W-31-109-ENG-38
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 1993 Jul 29; Other Information: PBD: 1993; Related Information: U. S. Patent No. 5,395,532. Filed 03/07/1995.
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 05 NUCLEAR FUELS; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ACTINIDES; RADIOACTIVE WASTE PROCESSING; RARE EARTHS; ENCAPSULATION; PLUTONIUM; SOLVENT EXTRACTION; COLLOIDS; SILICA; EMULSIONS; SILICATES
Citation Formats
Chaiko, D J. Method for extracting metals from aqueous waste streams for long term storage. United States: N. p., 1993.
Web.
Chaiko, D J. Method for extracting metals from aqueous waste streams for long term storage. United States.
Chaiko, D J. Fri .
"Method for extracting metals from aqueous waste streams for long term storage". United States. https://www.osti.gov/servlets/purl/94654.
@article{osti_94654,
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 manometers.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}
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