Fluid extraction using carbon dioxide and organophosphorus chelating agents
Abstract
Methods for extracting metalloid and metal species from a solid or liquid material by exposing the material to a fluid solvent, particularly supercritical CO.sub.2, and a chelating agent are described. The chelating agent forms a chelate with the species, the chelate being soluble in the fluid to allow removal of the species from the material. In preferred embodiments the extraction solvent is supercritical CO.sub.2 and the chelating agent comprises an organophosphorous chelating agent, particularly sulfur-containing organophosphorous chelating agents, including mixtures of chelating agents. Examples of chelating agents include monothiophosphinic acid, di-thiophosphinic acid, phosphine sulfite, phosphorothioic acid, and mixtures thereof. The method provides an environmentally benign process for removing metal and metalloids from industrial waste solutions, particularly acidic solutions. Both the chelate and the supercritical fluid can be regenerated and the contaminant species recovered to provide an economic, efficient process.
- Inventors:
-
- Moscow, ID
- Issue Date:
- OSTI Identifier:
- 871988
- Patent Number(s):
- 5840193
- Assignee:
- Idaho Research Foundation (Moscow, ID)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- DOE Contract Number:
- CC-S-588193-002-C
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- fluid; extraction; carbon; dioxide; organophosphorus; chelating; agents; methods; extracting; metalloid; metal; species; solid; liquid; material; exposing; solvent; particularly; supercritical; agent; described; forms; chelate; soluble; allow; removal; preferred; embodiments; comprises; organophosphorous; sulfur-containing; including; mixtures; examples; monothiophosphinic; acid; di-thiophosphinic; phosphine; sulfite; phosphorothioic; method; provides; environmentally; benign; process; removing; metalloids; industrial; waste; solutions; acidic; regenerated; contaminant; recovered; provide; economic; efficient; removing metal; species recovered; benign process; agent forms; extracting metal; allow removal; industrial waste; liquid material; environmentally benign; extraction solvent; metal species; preferred embodiments; supercritical fluid; carbon dioxide; preferred embodiment; waste solutions; chelating agents; chelating agent; method provides; waste solution; efficient process; fluid solvent; agent comprises; acidic solution; method provide; acidic solutions; contaminant species; moving metal; extracting metalloid; fluid extraction; particularly supercritical; phosphinic acid; /210/405/435/
Citation Formats
Smart, Neil G, Wai, Chien M, Lin, Yuehe, and Kwang, Yak Hwa. Fluid extraction using carbon dioxide and organophosphorus chelating agents. United States: N. p., 1998.
Web.
Smart, Neil G, Wai, Chien M, Lin, Yuehe, & Kwang, Yak Hwa. Fluid extraction using carbon dioxide and organophosphorus chelating agents. United States.
Smart, Neil G, Wai, Chien M, Lin, Yuehe, and Kwang, Yak Hwa. Thu .
"Fluid extraction using carbon dioxide and organophosphorus chelating agents". United States. https://www.osti.gov/servlets/purl/871988.
@article{osti_871988,
title = {Fluid extraction using carbon dioxide and organophosphorus chelating agents},
author = {Smart, Neil G and Wai, Chien M and Lin, Yuehe and Kwang, Yak Hwa},
abstractNote = {Methods for extracting metalloid and metal species from a solid or liquid material by exposing the material to a fluid solvent, particularly supercritical CO.sub.2, and a chelating agent are described. The chelating agent forms a chelate with the species, the chelate being soluble in the fluid to allow removal of the species from the material. In preferred embodiments the extraction solvent is supercritical CO.sub.2 and the chelating agent comprises an organophosphorous chelating agent, particularly sulfur-containing organophosphorous chelating agents, including mixtures of chelating agents. Examples of chelating agents include monothiophosphinic acid, di-thiophosphinic acid, phosphine sulfite, phosphorothioic acid, and mixtures thereof. The method provides an environmentally benign process for removing metal and metalloids from industrial waste solutions, particularly acidic solutions. Both the chelate and the supercritical fluid can be regenerated and the contaminant species recovered to provide an economic, efficient process.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Extraction of metal ions from liquid and solid materials by supercritical carbon dioxide
journal, November 1992
- Laintz, K. E.; Wai, C. M.; Yonker, C. R.
- Analytical Chemistry, Vol. 64, Issue 22
Tri-n-octylphosphine sulfide:
journal, January 1965
- Elliott, Donald E.; Banks, Charlesa V.
- Analytica Chimica Acta, Vol. 33
Determination of an organotin stabilizer in a rigid poly(vinyl chloride) plastic by on-line supercritical fluid extraction and chromatography with formic acid modified carbon dioxide and flame ionization detection
journal, March 1993
- Oudsema, John W.; Poole, Colin F.
- Journal of High Resolution Chromatography, Vol. 16, Issue 3
Determination of organotin compounds in environmental samples by supercritical fluid extraction and gas chromatography with atomic emission detection
journal, February 1993
- Liu, Yan; Lopez-Avila, Viorica; Alcaraz, Marcela
- Journal of High Resolution Chromatography, Vol. 16, Issue 2
Supercritical Fluid Extraction of Lanthanides with Fluorinated .beta.-Diketones and Tributyl Phosphate
journal, July 1994
- Lin, Yuehe.; Wai, C. M.
- Analytical Chemistry, Vol. 66, Issue 13
Cobalt-nickel separation: the extraction of cobalt(II) and nickel(II) by Cyanex 301, Cyanex 302 and Cyanex 272
journal, April 1993
- Tait, Brian K.
- Hydrometallurgy, Vol. 32, Issue 3
The Separation of Americium from Light Lanthanides by Cyanex 301 Extraction
journal, January 1995
- Zhu, Yongjun
- Radiochimica Acta, Vol. 68, Issue 2
Supercritical Fluid Extraction of Thorium and Uranium Ions from Solid and Liquid Materials with Fluorinated .beta.-Diketones and Tributyl Phosphate
journal, June 1994
- Lin, Yuehe.; Wai, Chien M.; Jean, Fred M.
- Environmental Science & Technology, Vol. 28, Issue 6
The Extraction of Americium and Light Lanthanides by HDEHDTP and Cyanex 302
journal, January 1995
- Zhu, Yongjun; Jiao, Rongzhou
- Radiochimica Acta, Vol. 69, Issue 3
Solvent extraction of copper by Cyanex 272, Cyanex 302 and Cyanex 301
journal, February 1995
- Sole, Kathryn C.; Hiskey, J. Brent
- Hydrometallurgy, Vol. 37, Issue 2
Supercritical fluid extraction and chromatography of metal chelates and organometallic compounds
journal, March 1995
- Lin, Yuehe; Smart, Neil G.; Wai, C. M.
- TrAC Trends in Analytical Chemistry, Vol. 14, Issue 3
Supercritical fluid extraction of lanthanides and actinides from solid materials with a fluorinated .beta.-diketone
journal, September 1993
- Lin, Yuehe.; Brauer, R. D.; Laintz, K. E.
- Analytical Chemistry, Vol. 65, Issue 18
The Extraction of some base Metal ions by Cyanex 30l Cyanex 302 and Their Binary Extractant Mixtures with Aliquat 336
journal, December 1992
- Tait, Brian K.
- Solvent Extraction and Ion Exchange, Vol. 10, Issue 5
Determination of Metals in Solid Samples by Complexation--Supercritical Fluid Extraction and Gas Chromatography--Atomic Emission Detection
journal, August 1993
- Liu, Y.; Lopez-Avila, V.; Alcaraz, M.
- Journal of Chromatographic Science, Vol. 31, Issue 8
Supercritical fluid extraction of organic and inorganic mercury from solid materials
journal, September 1993
- Wai, C. M.; Lin, Yuehe; Brauer, Russell
- Talanta, Vol. 40, Issue 9