Processes for separating cesium from industrial streams containi

Details Processes for separating cesium from industrial streams containi Processes for separating cesium from industrial streams containi

1994-11-04

1997-08-12

Seidleck, James J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528129, 528148, 528212, 528217, 521 39, 549354, 210660, C08F28300, C08G 800, C08L 6106

Patent

active

056567022

ABSTRACT:
A method for the removal separation, and concentration of cesium cations from a source solution which may contain larger concentrations of other alkali metal ions comprises bringing the source solution into contact with a polymeric resin containing poly(hydroxyarylene) ligands. The poly(hydroxyarylene) ligand portion(s) of the polymeric resins has affinity for cesium, thereby removing cesium from the source solution. The source solutions from which the cesium has been removed may then be treated or disposed of as desired and the cesium cations are then removed from the polymeric resin through contact with a much smaller volume of a receiving solution in which these cesium cations are soluble and has greater affinity for such cations than does the poly(hydroxyarylene) ligand or protonates the ligand, thereby quantitatively stripping the complexed cesium cations from the ligand and recovering them in concentrated form in said receiving solution. The concentrated cesium cations thus removed may be further separated and recovered by known methods. The process is useful in the removal of cesium cations from a variety of source solutions such as from semiconductor, nuclear waste cleanup, metals refining, electric power, and other industrial enterprises. The invention is also drawn to the poly(hydroxyarylene)-ligand-containing polymeric resins.

REFERENCES:
patent: 5143784 (1992-09-01), Mita
Schneider, Ulrich; Schneider, Hans-Joerg (Fr Organischeschemie Universitset des Saarlardes, Saarbruecken, D-66041, Germany) Chem. Ber, 127 (12), 2455-G9 (Crevan) 1994.
Synthesis of amino methylated cedix (4) resorcinrenes Matsuchite et al.
Preparation of calixarene derivatives as extracting agents for rare earth metals Makashio et al.
Cyclic phenol-formaldehyde oztamers Lase et al.

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