Ahlstrom Corporation

Ahlstrom-munksjo Oyj

Munksjo Oyj

Gilles Gauthier

Menno Dufour

Joseph Dussaud

Diego Fantini

Pascale Escaffre

Hanna Rahiala

Kay Rökman

Valérie Chauve

Alexandra Venot

Anthony Lemonnier

A cellulose fiber-based support of which at least one surface is coated with a layer containing at least one water-soluble polymer having hydroxyl functions, at least some of which have been reacted beforehand with at least one organic molecule that contains at least one vinylic function, characterized in that said organic molecule also has an aldehyde function. Method for production thereof.

Cellulose fibre-based support containing a modified PVA layer-method for production and use

Filtering medium based on activated carbon which is characterized in that it comprises three superposed layers, respectively an inner layer and two outer layers, the inner layer consisting of 80 to 95% by dry weight of activated carbon, the balance for 100% consisting of organic and/or inorganic chemical fibres, the first outer layer comprising from 45 to 95% by dry weight of organic and/or inorganic chemical fibres, the balance for 100% consisting of activated carbon and/or of a material having a density of less than 0.9, the second outer layer comprising from 5 to 25% by dry weight of activated carbon, the balance for 100% consisting of organic and/or inorganic chemical fibres, and in that the weight of the inner layer is between 40 and 200 g/m2 and the weight of the outer layers is between 10 and 100 g/m2.

Filtering medium and use of the said filtering medium for pollution removal from lagoons

Growing community of inventors

Salaise sur Sanne, France

Gilles Gauthier