Method for adsorption of fluid contaminants and regeneration...

A - Human Necessities – 62 – D

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A62D 3/30 (2007.01)

Patent

CA 2656218

The invention provides methods for treating a fluid, particularly water, contaminated with organic compounds, organisms, toxic substances, hazardous substances, ammonia, or mixtures thereof, by adsorption with an adsorbent material and regeneration of the purified adsorbent material. The contaminants may be first adsorbed onto the adsorbent material, which is then regenerated by treatment with nanoparticles of at least one transition metal oxide catalyst and at least one oxidant; or the contaminants are adsorbed onto particles of the adsorbent material loaded with at least one transition metal oxide, which is then regenerated by treatment with an oxidant; or the contaminated fluid is treated with an oxidant first and then with particles of the adsorbent material loaded with at least one transition metal oxide. The adsorbed contaminants are converted into environmentally compatible products.

L'invention concerne des procédés pour le traitement d'un fluide, en particulier de l'eau, contaminé par des composés organiques, des organismes, des substances toxiques, des substances dangereuses, de l'ammoniaque, ou leurs mélanges, par adsorption par une matière adsorbante et régénération de la matière adsorbante purifiée. Les contaminants peuvent être tout d'abord adsorbés sur la matière adsorbante, laquelle est ensuite régénérée par traitement par des nanoparticules d'au moins un catalyseur oxyde de métal de transition et au moins un oxydant; ou les contaminants sont adsorbés sur des particules de la matière adsorbante chargée par au moins un oxyde de métal de transition, lequel est ensuite régénéré par traitement par un oxydant; ou le fluide contaminé est traité par un oxydant tout d'abord, puis par des particules de la matière adsorbante chargée par au moins un oxyde de métal de transition. Les contaminants adsorbés sont convertis en produits compatibles avec l'environnement.

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