Phenolic cation exchange resin material for recovery of cesium and strontium

Patent · Sat Jan 01 00:00:00 EST 1983

OSTI ID:864823

Ebra, Martha A ^[1]; Wallace, Richard M ^[1]

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1. Aiken, SC

A phenolic cation exchange resin with a chelating group has been prepared by reacting resorcinol with iminodiacetic acid in the presence of formaldehyde at a molar ratio of about 1:1:6. The material is highly selective for the simultaneous recovery of both cesium and strontium from aqueous alkaline solutions, such as, aqueous alkaline nuclear waste solutions. The organic resins are condensation polymers of resorcinol and formaldehyde with attached chelating groups. The column performance of the resins compares favorably with that of commercially available resins for either cesium or strontium removal. By combining Cs.sup.+ and Sr.sup.2+ removal in the same bed, the resins allow significant reduction of the size and complexity of facilities for processing nuclear waste.

• Research Organization: E I DUPONT DE NEMOURS & CO INC
• DOE Contract Number: AC09-76SR00001
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4423159
• OSTI ID: 864823
• Country of Publication: United States
• Language: English

Related Subjects

phenolic
cation
exchange
resin
material
recovery
cesium
strontium
chelating
prepared
reacting
resorcinol
iminodiacetic
acid
presence
formaldehyde
molar
ratio
highly
selective
simultaneous
aqueous
alkaline
solutions
nuclear
waste
organic
resins
condensation
polymers
attached
column
performance
compares
favorably
commercially
available
removal
combining
cs
sr
bed
allow
significant
reduction
size
complexity
facilities
processing
aqueous alkaline
alkaline solutions
simultaneous recovery
aqueous alkali
acetic acid
significant reduction
molar ratio
cation exchange
exchange resin
waste solutions
nuclear waste
commercially available
waste solution
highly selective
alkaline solution
organic resin
iminodiacetic acid
phenolic cation
/521/