Bleaching recycled pulp with a reductive-oxidative sequence

Details Bleaching recycled pulp with a reductive-oxidative sequence Bleaching recycled pulp with a reductive-oxidative sequence

D - Textiles, Paper

21

C

D21C 5/02 (2006.01) D21C 9/10 (2006.01) D21C 9/153 (2006.01) D21C 9/16 (2006.01)

Patent

CA 2137451

A method of bleaching waste paper pulp. The pulp is first treated to a reductive chemical followed by acidification and washing or dewatering. The pulp is then subjected to ozone and then to hydrogen peroxide.

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