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  • Oxygen Reinforced Peroxide Bleaching

Oxygen Reinforced Peroxide Bleaching Improved brightness for chlorine free paper

Advantages with pressurized hot peroxide bleaching:

  • Pressure and temperature 100-110°C (212-230°F) gives better stoichiometry and a higher bleaching rate than an atmospheric P-stage at 85-90°C (185-194°F)
  • Shorter retention time: 1-2 h vs. 5-15 h in atmosphere systems
  • Important stage in TCF sequences
  • Can reduce the CIO2 charge and AOX levels by 50% in ECF sequences.


Pressurized peroxide stages (PO) are an advantage in totally chlorine free (TCF) bleaching by making it possible to achieve a high final brightness. In sequences with chlorine dioxide (ECF bleaching), a powerful peroxide stage will reduce the consumption of chlorine dioxide or even replace one chlorine dioxide stage.

A hot, pressurized peroxide stage operates at temperatures above 100°C
(212°F)  with a small amount of oxygen added. A prerequisite for successful peroxide bleaching is that the content of metal ions, e.g. manganese, copper and iron, is low.

Any Questions? Contact Us.

Air Seperation Unit, Leuna (Germany)

1-888-256-7359
Use the Contact Form
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