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Title: Extracting metal ions with diphosphonic acid, or derivative thereof

Abstract

Thermodynamically-unstable complexing agents which are diphosphonic acids and diphosphonic acid derivatives (or sulfur containing analogs), like carboxyhydroxymethanediphosphonic acid and vinylidene-1,1-diphosphonic acid, are capable of complexing with metal ions, and especially metal ions in the II, III, IV, V and VI oxidation states, to form stable, water-soluble metal ion complexes in moderately alkaline to highly-acidic media. However, the complexing agents can be decomposed, under mild conditions, into non-organic compounds which, for many purposes are environmentally-nondamaging compounds thereby degrading the complex and releasing the metal ion for disposal or recovery. Uses for such complexing agents as well as methods for their manufacture are also described. 1 fig.

Inventors:
; ;
Issue Date:
OSTI Identifier:
7244712
Patent Number(s):
5332531 A
Application Number:
PPN: US 7-898386
Assignee:
Arch Development Corp., Chicago, IL (United States) PTO; EDB-94-130892
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Resource Relation:
Patent File Date: 10 Jun 1992
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; METALS; CHEMICAL REACTIONS; MATERIALS RECOVERY; PHOSPHONIC ACIDS; SYNTHESIS; TECHNOLOGY ASSESSMENT; WASTE PROCESSING; ELEMENTS; MANAGEMENT; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; PROCESSING; WASTE MANAGEMENT; 320305* - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Industrial Waste Management

Citation Formats

Horwitz, E.P., Gatrone, R.C., and Nash, K.L. Extracting metal ions with diphosphonic acid, or derivative thereof. United States: N. p., 1994. Web.
Horwitz, E.P., Gatrone, R.C., & Nash, K.L. Extracting metal ions with diphosphonic acid, or derivative thereof. United States.
Horwitz, E.P., Gatrone, R.C., and Nash, K.L. Tue . "Extracting metal ions with diphosphonic acid, or derivative thereof". United States.
@article{osti_7244712,
title = {Extracting metal ions with diphosphonic acid, or derivative thereof},
author = {Horwitz, E.P. and Gatrone, R.C. and Nash, K.L.},
abstractNote = {Thermodynamically-unstable complexing agents which are diphosphonic acids and diphosphonic acid derivatives (or sulfur containing analogs), like carboxyhydroxymethanediphosphonic acid and vinylidene-1,1-diphosphonic acid, are capable of complexing with metal ions, and especially metal ions in the II, III, IV, V and VI oxidation states, to form stable, water-soluble metal ion complexes in moderately alkaline to highly-acidic media. However, the complexing agents can be decomposed, under mild conditions, into non-organic compounds which, for many purposes are environmentally-nondamaging compounds thereby degrading the complex and releasing the metal ion for disposal or recovery. Uses for such complexing agents as well as methods for their manufacture are also described. 1 fig.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {7}
}