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Title: Method for treating liquid wastes

Patent ·
OSTI ID:870223
 [1];  [1];  [1];  [1]
  1. Columbia, MO
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The method of treating liquid waste in a media is accomplished by exposing the media to phosphinimines and sequestering .sup.99 Tc from the media by the phosphinimine (PN) functionalities. The system for treating the liquid waste in the media includes extraction of .sup.99 TcO.sub.4.sup.- from aqueous solutions into organic solvents or mixed organic/polar media, extraction of .sup.99 Tc 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 .sup.99 Tc from those liquids.

Research Organization:
Univ. of Missouri, Columbia, MO (United States)
DOE Contract Number:
FG02-89ER60875
Assignee:
Curators of University of Missouri (Columbai, MO)
Patent Number(s):
US 5478474
OSTI ID:
870223
Country of Publication:
United States
Language:
English

References (13)

The measurement of technetium-99 and iodine-129 in waste water from pressurized nuclear-power reactors journal January 1992
Synthesis and characterization of a neutral and lipophilic Ph3PN99mTcO3 complex journal January 1995
Miscellaneous journal October 1987
Adsorption of pertechnetate ion on active carbon from acids and their salt solutions journal December 1991
Application of supported liquid membranes for removal of nitrate, technetium (VII) and chromium (VI) from groundwater journal January 1991
Basische Oberflächenoxide auf Kohlenstoff—I. Adsorption von säuren journal March 1970
Behavior of pertechnetate ion adsorption from aqueous solutions shown by activated carbons derived from different sources journal January 1992
Organometallic Phosphinimines as Building Blocks for Potential New Radiopharmaceuticals. Synthesis, Structure and Reactivity of Ph 3 P=NH 2 + ReO 4 - journal October 1993
Remediation of hazardous waste sites journal February 1992
Sorption Behavior of Carrier-Free Technetium-95m on Minerals, Rocks and Backfill Materials under both Oxidizing and Reducing Conditions journal June 1988
Technetium Discharges into the Environment book January 1986
Technetium-99 Removal from Process Solutions and Contaminated Groundwater journal January 1993
Application of Supported Liquid Membranes for Removal of Uranium from Groundwater journal October 1990

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Related Subjects

method
treating
liquid
wastes
waste
media
accomplished
exposing
phosphinimines
sequestering
99
tc
phosphinimine
pn
functionalities
extraction
tco
aqueous
solutions
organic
solvents
mixed
polar
solid
matrix
container
containing
matrices
including
inlet
outlet
allowing
flow
immobilized
ligand
contained
insoluble
suspensions
supported
membranes
slm
sequester
liquids
liquid wastes
organic solvents
liquid solution
supported liquid
organic solvent
aqueous solution
aqueous solutions
liquid membrane
liquid waste
container containing
solid matrix
treating liquid
liquid membranes
mixed organic
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