Method for removing arsenic as scorodite

Details Method for removing arsenic as scorodite Method for removing arsenic as scorodite

C - Chemistry, Metallurgy

01

G

C01G 28/02 (2006.01) C01G 49/00 (2006.01) C02F 1/02 (2006.01) C02F 1/72 (2006.01) C02F 9/00 (2006.01) C22B 30/04 (2006.01)

Patent

CA 2753163

The invention relates to a method for removing arsenic as scorodite from solutions that contain iron and arsenic. In accordance with the method, arsenic is first precipitated as ferric arsenate and subsequently processed hydrothermally into crys-talline scorodite.

L'invention concerne un procédé permettant d'enlever l'arsenic sous la forme de scorodite de solutions qui contiennent du fer et de l'arsenic. Selon le procédé, l'arsenic est précipité en premier lieu sous la forme d'arsenate ferrique et est traité par la suite par voie hydrothermique en scorodite cristalline.

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