Carbon dioxide can be used to regulate the pH of recycled, mechanical or chemical pulps after an alkaline bleaching, particularly when hydrogen peroxide is used. Advantages compared with traditional acids are ease of use, increased reliable pH control, installation safety, reduction in sulfur containing products and more.
This process reduces chlorinated reagents during the bleaching process, especially chlorine dioxide. Oxygen is often used in conjunction with hydrogen peroxide to ensure a greater reduction in chemical uses and resulting organochlorinated products (AOX).
Ozone bleaching is an efficient method of decreasing your bleaching costs and reducing emissions. Ozone can be produced from oxygen (liquid oxygen or Vacuum Swing Adsorbtion) in generators. You can rely on our expertise in bleaching steps, recovery, and reuse of the oxygen rich off-gas to help achieve efficiency throughout your operations.