Method for hydrogen peroxide bleaching of pulp

Details Method for hydrogen peroxide bleaching of pulp Method for hydrogen peroxide bleaching of pulp

D - Textiles, Paper

21

C

D21C 9/16 (2006.01) D21B 1/16 (2006.01) D21C 5/02 (2006.01) D21C 9/12 (2006.01)

Patent

CA 2457820

Disclosed is a method for pulp bleaching. The method comprises the steps of providing a pulp sample for bleaching, the pulp sample stemming from a pulp producing process, providing a bleaching liquor comprising water and an organic component as solvent components constituting a bleaching medium, dissolved within which are at least a bleaching agent, and a basic agent; and subjecting the pulp sample to the bleaching liquor for a predefined amount of time at predefined bleaching conditions. A preferred bleaching agent is hydrogen peroxide. The organic component amounts to at least 5% in weight of the bleaching medium.

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