Part I: Peracetic Acid - An Effective Alternative for Chlorine Compound Free Delignification of Kraft Pulp, 1992 Pulping Conference Proceedings
The search for chlorine compound free delignification and bleaching technologies has prompted the industry to explore options that once were considered unrealistic. Peracetic acid, although known as an effective delignifier for nearly fifty years, is perceived as one of these alternatives. The cost associated with using equilibrium peracetic acid was then, and still remains, prohibitive. Distillation significantly reduces the cost of peracetic acid by eliminating the unreacted reagents contained in the equilibrium product.
The work presented in this paper is the beginning of an extensive project to investigate distilled peracetic acid as both a delignifier and bleaching agent in the production of chemical pulps. In Part 1, we examine the effects of treatment time, temperature, pH and peracetic acid charge on delignification and selectivity for southern pine and a mixed southern hardwood kraft pulp.
Part I: Peracetic Acid - An Effective Alternative for Chlorine Compound Free Delignification of Kraf