Dry method for recycling iodine-loaded silver zeolite

Patent · Tue May 09 00:00:00 EDT 1978

OSTI ID:863080

Thomas, Thomas R ^[1]; Staples, Bruce A ^[1]; Murphy, Llewellyn P ^[1]

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1. Idaho Falls, ID

Fission product iodine is removed from a waste gas stream and stored by passing the gas stream through a bed of silver-exchanged zeolite until the zeolite is loaded with iodine, passing dry hydrogen gas through the bed to remove the iodine and regenerate the bed, and passing the hydrogen stream containing the hydrogen iodide thus formed through a lead-exchanged zeolite which adsorbs the radioactive iodine from the gas stream and permanently storing the lead-exchanged zeolite loaded with radioactive iodine.

• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4088737
• Application Number: 05/737,650
• OSTI ID: 863080
• Country of Publication: United States
• Language: English

Related Subjects

/588/95/376/423/976/
adsorbs
bed
containing
dry
dry hydrogen
dry method
exchanged zeolite
fission
fission product
formed
gas
gas stream
hydrogen
hydrogen gas
hydrogen iodide
hydrogen stream
iodide
iodine
iodine-loaded
lead-exchanged
loaded
method
passing
permanently
product
radioactive
radioactive iodine
recycling
regenerate
remove
removed
silver
silver zeolite
silver-exchanged
stored
storing
stream
stream containing
waste
waste gas
zeolite