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Title: Process for producing zeolite adsorbent and process for treating radioactive liquid waste with the zeolite adsorbent

Abstract

Zeolite is contacted with an aqueous solution containing at least one of copper, nickel, cobalt, manganese and zinc salts, preferably copper and nickel salts, particularly preferably copper salt, in such a form as sulfate, nitrate, or chloride, thereby adsorbing the metal on the zeolite in its pores by ion exchange, then the zeolite is treated with a water-soluble ferrocyanide compound, for example, potassium ferrocyanide, thereby forming metal ferrocyanide on the zeolite in its pores. Then, the zeolite is subjected to ageing treatment, thereby producing a zeolite adsorbent impregnated with metal ferrocyanide in the pores of zeolite. The adsorbent can selectively recover cesium with a high percent cesium removal from a radioactive liquid waste containing at least radioactive cesium, for example, a radioactive liquid waste containing cesium and such coexisting ions as sodium, magnesium, calcium and carbonate ions at the same time at a high concentration. The zeolite adsorbent has a stable adsorbability for a prolonged time.

Inventors:
;
Publication Date:
OSTI Identifier:
6395661
Patent Number(s):
US 4448711
Assignee:
Hitachi Ltd. (Japan) EDB-84-189176
Resource Type:
Patent
Resource Relation:
Patent Priority Date: Priority date 6 Dec 1979, Japan; Other Information: PAT-APPL-213005
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; CESIUM; ADSORPTION; ION EXCHANGE; FERROCYANIDES; CATALYTIC EFFECTS; RADIOACTIVE WASTE PROCESSING; ZEOLITES; CHEMICAL PREPARATION; SORPTIVE PROPERTIES; ADSORBENTS; AQUEOUS SOLUTIONS; LIQUID WASTES; METALS; ALKALI METALS; COMPLEXES; DISPERSIONS; ELEMENTS; INORGANIC ION EXCHANGERS; ION EXCHANGE MATERIALS; IRON COMPLEXES; MANAGEMENT; MATERIALS; MINERALS; MIXTURES; PROCESSING; SOLUTIONS; SORPTION; SURFACE PROPERTIES; SYNTHESIS; TRANSITION ELEMENT COMPLEXES; WASTE MANAGEMENT; WASTE PROCESSING; WASTES; 052001* - Nuclear Fuels- Waste Processing

Citation Formats

Motojima, K., and Kawamura, F. Process for producing zeolite adsorbent and process for treating radioactive liquid waste with the zeolite adsorbent. United States: N. p., 1984. Web.
Motojima, K., & Kawamura, F. Process for producing zeolite adsorbent and process for treating radioactive liquid waste with the zeolite adsorbent. United States.
Motojima, K., and Kawamura, F. Tue . "Process for producing zeolite adsorbent and process for treating radioactive liquid waste with the zeolite adsorbent". United States.
@article{osti_6395661,
title = {Process for producing zeolite adsorbent and process for treating radioactive liquid waste with the zeolite adsorbent},
author = {Motojima, K. and Kawamura, F.},
abstractNote = {Zeolite is contacted with an aqueous solution containing at least one of copper, nickel, cobalt, manganese and zinc salts, preferably copper and nickel salts, particularly preferably copper salt, in such a form as sulfate, nitrate, or chloride, thereby adsorbing the metal on the zeolite in its pores by ion exchange, then the zeolite is treated with a water-soluble ferrocyanide compound, for example, potassium ferrocyanide, thereby forming metal ferrocyanide on the zeolite in its pores. Then, the zeolite is subjected to ageing treatment, thereby producing a zeolite adsorbent impregnated with metal ferrocyanide in the pores of zeolite. The adsorbent can selectively recover cesium with a high percent cesium removal from a radioactive liquid waste containing at least radioactive cesium, for example, a radioactive liquid waste containing cesium and such coexisting ions as sodium, magnesium, calcium and carbonate ions at the same time at a high concentration. The zeolite adsorbent has a stable adsorbability for a prolonged time.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {5}
}