Photoassisted oxidation of species in solution

Details Photoassisted oxidation of species in solution Photoassisted oxidation of species in solution

C - Chemistry, Metallurgy

01

B

C01B 25/12 (2006.01) B01J 19/12 (2006.01) C01G 28/00 (2006.01) C01G 49/00 (2006.01) C01G 49/06 (2006.01) C02F 1/32 (2006.01) C02F 1/72 (2006.01) C02F 1/74 (2006.01) A62D 3/00 (2006.01)

Patent

CA 2174239

The invention relates to methods and processes for the photoassisted oxidation of dissolved species such as arsenic, iron, phosphorus and sulphur. Each aspect of the invention involves supplying to a solution including the species to be oxidised, an oxidant and a photoabsorber, and then irradiating the resultant solution with UV/electromagnetic radiation. The resulting oxidised species can then be subsequently treated, used and/or removed (e.g. through precipitation/co-precipitation).

Procédés et processus d'oxydation photo-assistée d'espèces dissoutes telles que l'arsenic, le fer, le phosphore et le soufre. On introduit dans une solution renfermant l'espèce à oxyder un oxydant et un agent de photo-absorption, puis l'on soumet la solution ainsi obtenue à un rayonnement U.V./électromagnétique. Ensuite, on peut traiter, utiliser et/ou extraire (par exemple par précipitation/co-précipitation) l'espèce oxydée ainsi obtenue.

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