Method for depolluting aqueous media containing organic pollutants
Référence
00130-01
Mots-clés
Statut des brevets
Priority patent application FR05/07456 filed on July 12, 2005, entitled « Association persulfate/fer dans les réactions radicalaires initiées par faisceau d’électrons »
Inventeurs
Nathalie KARPEL VEL LEITNER
Carole CATASTINI
Statut commercial
Exclusive or non-exclusive licenses and collaborative agreement
Laboratoire
Laboratoire Chimie et Microbiologie de l’Eau (LCME) a CNRS and Université de Poitiers laboratory (UMR 6008), in Poitiers, France.
Description
TECHNICAL DESCRIPTION
The invention concerns a method for depolluting aqueous media containing organic pollutants difficult to oxidize by traditional methods. The method aims to reducing chemical oxygen demand and/or total organic carbon of an aqueous medium containing organic molecules. It consists in subjecting the aqueous medium to an electron beam generated by an electron accelerator, in the presence of a mineral catalyst, then eliminating the formed precipitates from the treated solution, said catalyst comprising a metal ion persulphate, and optionally an Fe(II) salt and an Fe(III) salt. The invention uses the synergetic effect between Fe and the persulfate which allows to improve the rate of the process by 3 to 8 depending on the quantity of mineral added.
BENEFITS
Allows to oxidize polluants which are reluctant to state of the art treatments.
INDUSTRIAL APPLICATIONS
Effluents treatment.
Oxidation of organic polluants.
DEVELOPMENT STAGE
Laboratory scale.