Phenolic cation exchange resin material for recovery of cesium and strontium

Patent · Fri Dec 31 23:00:00 EST 1982

OSTI ID:864823

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

---

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

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