Method of treating arsenic-contaminated matter using...

Details Method of treating arsenic-contaminated matter using... Method of treating arsenic-contaminated matter using...

A - Human Necessities

62

D

A62D 3/33 (2007.01)

Patent

CA 2222712

A method of treating arsenic-contaminated matter using an aluminum compound in conjunction with an alkaline buffer, thereby stabilizing the arsenic contained in the contaminated matter and decreasing leaching ability. Preferably, the aluminum compound is a soluble aluminum salt such as aluminum sulfate and the alkaline buffer is magnesium oxide.

Cette invention concerne un procédé de traitement de matière contaminée par de l'arsenic, lequel procédé fait appel à un composé d'aluminium conjointement avec un tampon alcalin, ce qui a pour effet de stabiliser l'arsenic contenu dans la matière contaminée et de réduire les capacités de lixiviation. Ce composé d'aluminium est, de préférence, un sel d'aluminium soluble tel que du sulfate d'aluminium, tandis que le tampon alcalin est de préférence de l'oxyde de magnésium.

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