LANXESS Oxone™ in Repulping

Oxone™ from LANXESS is a non-chlorinated oxidizer and processing aid for repulping. Commonly, Polyaminoamide-Epichlorohydrin (PAE) is used as a wet-strength resin to provide strength to paper but the resin-fiber bonds are very difficult to break.

Oxone™ has been demonstrated as highly effective on a variety of sanitary, food, packaging, and specialty papers containing wet-strength resin and made from different furnishes, such as bleach kraft, sulfite, chemi-thermomechanical pulp (CTMP), recycled paper, and unbleached kraft.
 

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Oxone™ vs. Non-Chlorine Oxidizers

 

 

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1. The repulper is charged with the proper amount of water and broke, and allowed to circulate.
2. The recommended repulping conditions are maintained throughout the run at:
   • Temperature: 60°C (140°F)
   • pH: 10.5
3. Oxone™ is added at 2% of the dry weight of the broke.
4. The mixture is allowed to circulate until a VSI rating of 5 or better is obtained.

Depending on broke type and wet strength resin content, repulping conditions may vary.
 

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Attribute	Oxone™	Hydrogen Peroxide	Sodium Percarbonate	Sodium Perborate	Peracetic Acid	Sodium Dipersulfate	Ozone	Chlorine & Hypochlorite
Molecular Formula	2KHSO5 KHSO4 K2SO4	H2O2	Na2CO3 1.5H2O2	NaBO3 4H2O	CH3COOOH	Na2S2O8	O3	CI2/NaOCI
Format	Solid	Liquid	Solid	Solid	Liquid	Solid	Gas	Gas/Liquid
Stability	Good	Unstable	Good	Good	Unstable	Good	Poor	Fair
Ease of Storage/ Transport	Good (Class 8)	More Difficult (Class 5.1 or 5.2)	More Difficult (Class 5.1)	More Difficult (Class 5.1)	More Difficult (Class 5.1 or 5.2)	More Difficult (Class 5.1)	Cannot be transported	Gas: More Difficult (Class 2.3 (5.1, 8))
Speed of Reaction Relative to Oxone™	N/A	Slow	Slow	Slow	Comparable	Slow	Fast	Fast
Toxicity Issues	Low	Low	Harmful if swallowed	Toxic to reproduction. May cause respiratory irritation.	May cause respiratory irritation	Respirator and skin sensitizer	Severe respiratory toxicity	May be fatal if inhaled/ swallowed
Environment Impact	Aquatic toxicity	Aquatic Toxicity	None	None	Aquatic toxicity	None	None	AOX formation, Aquatic toxicity