Membrane extraction with thermodynamically unstable diphosphonic acid derivatives
Abstract
Thermodynamically-unstable complexing agents which are diphosphonic acids and diphosphonic acid derivatives (or sulphur 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:
- Research Org.:
- Univ. of Chicago, IL (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 541723
- Patent Number(s):
- 5678242
- Application Number:
- PAN: 8-250,001
- Assignee:
- Arch Development Corp., Chicago, IL (United States)
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 14 Oct 1997
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; CHELATING AGENTS; METALS; PHOSPHONIC ACIDS; DECOMPOSITION; MATERIALS RECOVERY; WASTE DISPOSAL; USES; CHEMICAL PREPARATION
Citation Formats
Horwitz, E P, Gatrone, R C, and Nash, K L. Membrane extraction with thermodynamically unstable diphosphonic acid derivatives. United States: N. p., 1997.
Web.
Horwitz, E P, Gatrone, R C, & Nash, K L. Membrane extraction with thermodynamically unstable diphosphonic acid derivatives. United States.
Horwitz, E P, Gatrone, R C, and Nash, K L. Tue .
"Membrane extraction with thermodynamically unstable diphosphonic acid derivatives". United States.
@article{osti_541723,
title = {Membrane extraction with thermodynamically unstable diphosphonic acid derivatives},
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 sulphur 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 = {1997},
month = {10}
}