62.
(11) Patent number: 2160717
(46) Date of publication: 20.12.2000
(51) Int. Cl.7: C 02 F 1/62
(21) Application number: 96110374/12
(22) Application date: 27.05.1996
(71) Applicant:
Institut jadernoj fiziki SO RAN,
Novosibirskij gosudarstvennyj universitet
(72) Inventor:
Kundo N.N.,
Ivanchenko V.A.,
Kuksanov N.K.,
Petrov S.E.,
Sljudkin O.P.,
Korchagin A.I.,
Lavrukhin A.V.,
Fadeev S.N.,
Vagner V.A.,
Boldyreva N.N.
(73) Proprietor:
Institut jadernoj fiziki SO RAN,
Novosibirskij gosudarstvennyj universitet
(98) Mail address:
630090, g.Novosibirsk, ul.Pirogova 2, NGU, patentnyj otde
(54) METHOD OF REMOVAL OF HEXAVALENT CHROME FROM SOLUTIONS
(57)
FIELD: chemistry, particularly, precipitation of hexavalent chrome from solutions; applicable in various processes including purification of sewage waters from hexavalent chrome. SUBSTANCE: method includes adding to treated solution of sodium thiosulfate in stoichiometric ratio to substances containing hexavalent chrome. Then, solution is exposed to radiation with electronic beam with dose of 10-30 Mrad. EFFECT: simplified method of purification of solutions containing hexavalent chrome and high purification efficiency. 1 tbl, 1 ex.
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