The main objective of bleaching is to produce a brighter pulp. This is accomplished in chemical pulps primarily through lignin removal. The removal of other compounds is another objective of the bleaching process. These compounds include resins, fatty acids, and other extractives.<\/p>\n\n\n\n
For many years the PDC has worked closely with the pulp and paper industry to develop new and effective bleaching sequences. We can perform a wide range of bleaching sequences on mechanical, recycled, and chemical pulps. The sequences may be comprised of a variety of stages, including chelation, enzyme, oxygen, ozone, chlorine, chlorine dioxide, extraction, and hydrogen peroxide stages.<\/p>\n\n\n