Cellulose represents one of the most important renewable raw materials existing in nature: every single tree produces about 14 grams of cellulose a day and the sum of all the cellulose molecules produced daily in the world could make a chain 175 times longer the distance between the earth and the sun. From the chemical point of view, cellulose is a polysaccharide made of molecules of glucose joined together in a chain, including up to 5000 of them. Cellulose gets drawn from the structure of plants thanks to a special chemical process aiming to remove some components in order to obtain a highly pure cellulose to be used in several industrial processes, included liquid filtration. In the filtration field, the use of cellulose was historically limited to those cases where the use of mineral filter aids was not possible (recovery of precious metals and steam water condensation filtration). The ban on using asbestos fibres has represented a turning point that fostered the development of cellulose-based filter aids. At the moment there are different kinds of cellulose-based products. The typologies produced by J. Rettenmaier & Söhne are so called: Vitacel®, Arbocel®, Filtracel®, Lignocel®, Rehofix®. For each of these typologies it is possible to identify several particle sizes which allow to face all kinds of filtration, from coarse to extremely fine filtration processes.
PALUMBO TRADING markets the whole range of cellulose-based filter aids produced by J. Rettenmaier & Söhne.