Flocculation of cell material

Details Flocculation of cell material Flocculation of cell material

C - Chemistry, Metallurgy

12

N

C12N 1/02 (2006.01)

Patent

CA 2380652

A process of flocculating microbial cell material from a suspending medium which contains cell material, comprising adding to the suspending medium a first polymeric material which is cationic and has intrinsic viscosity of not more than 2 dl/g, and subsequently or simultaneously adding to the suspending medium a second polymeric material which is cationic or substantially non- ionic and has intrinsic viscosity of at least 4 dl/g, and allowing the cell material to flocculate.

La présente invention concerne un procédé de floculation de produit cellulaire microbien d'un milieu de suspension contenant le produit cellulaire. Ce procédé consiste à ajouter au milieu de suspension un premier matériau polymère cationique présentant une viscosité intrinsèque inférieure à 2 dl/g, et à ajouter ultérieurement ou simultanément au milieu de suspension un second matériau polymère cationique ou sensiblement non ionique présentant une viscosité intrinsèque d'au moins 4 dl/g, et à permettre enfin au produit cellulaire de floculer.

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