Process for the removal of n-phosphonomethyglycine from...

Details Process for the removal of n-phosphonomethyglycine from... Process for the removal of n-phosphonomethyglycine from...

C - Chemistry, Metallurgy

07

F

C07F 9/38 (2006.01)

Patent

CA 2224522

N-(phosphonomethylglycine)(glyphosate) or a salt or ionic form thereof is removed from an aqueous mixture such as an effluent stream in which it is present by addition to the mixture of ions capable of forming an insoluble or partially soluble complex glyphosate salt, and removing the complex salt from the mixture. Iron (III) ions are particularly suitable. In a preferred integrated process, glyphosate is recovered from the complex glyphosate salt.

La N-phosphonométhylglycine (glyphosate), ou un sel ou une forme ionique de celle-ci, est éliminée d'un mélange aqueux tel qu'un courant effluent dans lequel elle est présente par addition au mélange d'ions capables de former un sel complexe de glyphosate insoluble ou partiellement soluble, puis par élimination de ce sel du mélange. Les ions ferriques (III) conviennent particulièrement bien à cet effet. Dans l'un des procédés intégrés préférés, le glyphosate est récupéré dans du sel complexe de glyphosate.

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