7/14/2020 3:37:29 PM

Lanxess Oxone™ in Repulping

Eco-Conscious Repulping with Oxone™

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.
 

Applications

 

  • Tissue, towel, napkin
  • Coffee filter, milk carton
  • Wet-strength carrier board
  • Poly-coated board
  • Secondary fiber treatment

Advantages

 

  • No chlorinated compounds
  • Lower degradation of fibers
  • Increased productivity
  • Reduced corrosion
  • Easier, safer handling

Oxone™ vs. Non-Chlorine Oxidizers

 
 

Recommended Repulping Procedure

  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.
 

Oxone™ Impact on Paper Properties

Oxone™ vs. Other Oxidizers

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

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