Fluid extraction using carbon dioxide and organophosphorus chelating agents

Smart, Neil G; Wai, Chien M; Lin, Yuehe; Kwang, Yak Hwa

Fluid extraction using carbon dioxide and organophosphorus chelating agents

Patent · Wed Dec 31 23:00:00 EST 1997

OSTI ID:871988

Smart, Neil G ^[1]; Wai, Chien M ^[1]; Lin, Yuehe ^[1]; Kwang, Yak Hwa ^[1]

Moscow, ID

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.

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Assignee:: Idaho Research Foundation (Moscow, ID)

Patent Number(s):: US 5840193

OSTI ID:: 871988

Country of Publication:: United States

Language:: English

References (15)

The Extraction of Americium and Light Lanthanides by HDEHDTP and Cyanex 302 Zhu, Yongjun; Jiao, Rongzhou Radiochimica Acta, Vol. 69, Issue 3 https://doi.org/10.1524/ract.1995.69.3.191	journal	January 1995
The Extraction of some base Metal ions by Cyanex 30l Cyanex 302 and Their Binary Extractant Mixtures with Aliquat 336 Tait, Brian K. Solvent Extraction and Ion Exchange, Vol. 10, Issue 5 https://doi.org/10.1080/07366299208918136	journal	December 1992
Tri-n-octylphosphine sulfide: Elliott, Donald E.; Banks, Charlesa V. Analytica Chimica Acta, Vol. 33 https://doi.org/10.1016/S0003-2670(01)84886-8	journal	January 1965
The Separation of Americium from Light Lanthanides by Cyanex 301 Extraction Zhu, Yongjun Radiochimica Acta, Vol. 68, Issue 2 https://doi.org/10.1524/ract.1995.68.2.95	journal	January 1995
Supercritical Fluid Extraction of Thorium and Uranium Ions from Solid and Liquid Materials with Fluorinated .beta.-Diketones and Tributyl Phosphate Lin, Yuehe.; Wai, Chien M.; Jean, Fred M. Environmental Science & Technology, Vol. 28, Issue 6 https://doi.org/10.1021/es00055a034	journal	June 1994
Solvent extraction of copper by Cyanex 272, Cyanex 302 and Cyanex 301 Sole, Kathryn C.; Hiskey, J. Brent Hydrometallurgy, Vol. 37, Issue 2 https://doi.org/10.1016/0304-386X(94)00023-V	journal	February 1995
Supercritical fluid extraction and chromatography of metal chelates and organometallic compounds Lin, Yuehe; Smart, Neil G.; Wai, C. M. TrAC Trends in Analytical Chemistry, Vol. 14, Issue 3 https://doi.org/10.1016/0165-9936(95)94045-G	journal	March 1995
Determination of organotin compounds in environmental samples by supercritical fluid extraction and gas chromatography with atomic emission detection Liu, Yan; Lopez-Avila, Viorica; Alcaraz, Marcela Journal of High Resolution Chromatography, Vol. 16, Issue 2 https://doi.org/10.1002/jhrc.1240160208	journal	February 1993
Cobalt-nickel separation: the extraction of cobalt(II) and nickel(II) by Cyanex 301, Cyanex 302 and Cyanex 272 Tait, Brian K. Hydrometallurgy, Vol. 32, Issue 3 https://doi.org/10.1016/0304-386X(93)90047-H	journal	April 1993
Supercritical Fluid Extraction of Lanthanides with Fluorinated .beta.-Diketones and Tributyl Phosphate Lin, Yuehe.; Wai, C. M. Analytical Chemistry, Vol. 66, Issue 13 https://doi.org/10.1021/ac00085a008	journal	July 1994
Supercritical fluid extraction of lanthanides and actinides from solid materials with a fluorinated .beta.-diketone Lin, Yuehe.; Brauer, R. D.; Laintz, K. E. Analytical Chemistry, Vol. 65, Issue 18 https://doi.org/10.1021/ac00066a027	journal	September 1993
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 Oudsema, John W.; Poole, Colin F. Journal of High Resolution Chromatography, Vol. 16, Issue 3 https://doi.org/10.1002/jhrc.1240160316	journal	March 1993
Supercritical fluid extraction of organic and inorganic mercury from solid materials Wai, C. M.; Lin, Yuehe; Brauer, Russell Talanta, Vol. 40, Issue 9 https://doi.org/10.1016/0039-9140(93)80205-6	journal	September 1993
Determination of Metals in Solid Samples by Complexation--Supercritical Fluid Extraction and Gas Chromatography--Atomic Emission Detection Liu, Y.; Lopez-Avila, V.; Alcaraz, M. Journal of Chromatographic Science, Vol. 31, Issue 8 https://doi.org/10.1093/chromsci/31.8.310	journal	August 1993
Extraction of metal ions from liquid and solid materials by supercritical carbon dioxide Laintz, K. E.; Wai, C. M.; Yonker, C. R. Analytical Chemistry, Vol. 64, Issue 22 https://doi.org/10.1021/ac00046a039	journal	November 1992

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/210/405/435/
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carbon
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chelate
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metalloid
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Fluid extraction using carbon dioxide and organophosphorus chelating agents

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References (15)

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