C - Chemistry – Metallurgy – 01 – G
Patent
C - Chemistry, Metallurgy
01
G
C01G 45/00 (2006.01) B01J 20/06 (2006.01) C02F 1/28 (2006.01)
Patent
CA 2442541
A novel technique by which not only pentavalent arsenic but trivalent arsenic, which has been difficult to remove, can be efficiently removed. The manganese/oxygen compound which adsorbs arsenic is characterized by being a product of burning or heating which comprises an oxygen compound of bismuth and an oxygen compound of manganese and by containing manganese as a major component. It is used to treat an aqueous arsenic solution to thereby adsorptively remove the arsenic.
L'invention porte sur une nouvelle technique permettant d'éliminer efficacement non seulement l'arsenic pentavalent, mais également l'arsenic trivalent jusqu'à présent difficile à éliminer. Le composé de manganèse et d'oxygène qui adsorbe l'arsenic est un produit du grillage ou du chauffage, comportant un composé oxygéné de bismuth et un composé oxygéné de manganèse, et dont le manganèse est le principal constituant. On s'en sert pour traiter les solutions aqueuses d'arsenic pour en éliminer l'arsenic par adsorption.
Kasai Toshihiro
Koyanaka Hideki
Japan Science And Technology Corporation
Koyanaka Hideki
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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