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Method for depolluting aqueous media containing organic pollutants

Référence

00130-01

Mots-clés

Depolluting aqueous

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.

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