Published December 26, 1995 | Version v1
Patent Metadata-only

Method for treating liquid wastes

Creators

Description

The method of treating liquid waste in a media is accomplished by exposing the media to phosphinimines and sequestering 99Tc from the media by the phosphinimine (PN) functionalities. The system for treating the liquid waste in the media includes extraction of 99TcO4- from aqueous solutions into organic solvents or mixed organic/polar media, extraction of 99Tc from solutions on a solid matrix by using a container containing PN functionalities on solid matrices including an inlet and outlet for allowing flow of media through an immobilized phosphinimine ligand system contained within the container. Also, insoluble suspensions of phosphinimine functionalities on solid matrices in liquid solutions or present on supported liquid membranes (SLM) can be used to sequester 99Tc from those liquids. 6 figs

Availability note (English)

Available from Patent and Trademark Office, Box 9, Washington, DC 20232 (United States).

Additional details

Publishing Information

Imprint Pagination
[10 p.].
IPC:
Int. Cl. B01D 15/08.
IPC
Int. Cl. B01D 15/08.
Patent number
US patent document 5,478,474/A/

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
27037110
Subject category
S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
CHEMISORPTION; IMINES; LIQUID WASTES; MEMBRANE TRANSPORT; ORGANIC PHOSPHORUS COMPOUNDS; RADIOACTIVE WASTE PROCESSING; SOLVENT EXTRACTION; TECHNETIUM; TECHNETIUM OXIDES; TECHNETIUM 99
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHALCOGENIDES; CHEMICAL REACTIONS; ELEMENTS; EXTRACTION; HOURS LIVING RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MANAGEMENT; METALS; NUCLEI; ODD-EVEN NUCLEI; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; RADIOISOTOPES; SEPARATION PROCESSES; SORPTION; TECHNETIUM COMPOUNDS; TECHNETIUM ISOTOPES; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; WASTE MANAGEMENT; WASTE PROCESSING; WASTES; YEARS LIVING RADIOISOTOPES

Optional Information

Secondary number(s)
US patent application 8-165,373.