Process for the removal of toxic cyanide and heavy metal species

Details Process for the removal of toxic cyanide and heavy metal species Process for the removal of toxic cyanide and heavy metal species

1993-03-16

1996-06-04

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210634, B01D 1104

Patent

active

055229972

ABSTRACT:
Toxic cyanide and anionic metal species are removed from aqueous alkaline solutions by contacting the aqueous alkaline solutions with a compound which is capable of being protonated at a pH of 9 or above.

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B. R. Green and A. H. Potgeiter, "Unconventional Weak-Base Anion Exchange Resins, Useful For The Extraction of Metals, Especially Gold", D. Naden and M. Streat (Eds.), Ion Exchange Technology, Soc. Chem. Ind., London, 1984, pp. 626-636.
A. H. Schwellnus and B. R. Green "Structural Factors Influencing The Extraction of Gold Cyanide By Weak-Base Resins", M. Streat, Eds., Ion Exchange for Industry, Ellis Horwood Ltd., West Sussex, England, 1988, pp. 207-218.
A. H. Schwellnus and B. R. Green, "The Solvent Extraction of Gold Cyanide by Lauroimidazoline", Solvent Extraction and Ion Exchange, 8(2), 1990, pp. 223-240.
B. R. Green, "Mechanisms of Loading of Metal Cyanides By Weak-Base Resins", Reactive Polymers, 8, 1988, pp. 221-234.

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