Original Article |
2004, Vol.26, No.6, pp. 867-873
Process parameters affecting the delignification of eucalyptus kraft pulp with peroxyacetic acid
Pongsatorn Chaivichit, Panitnad Chandranupap, and Pravitra Chandranupap
pp. 867 - 873
Abstract
Various process parameters affecting eucalyptus kraft pulp delignification with peroxyacetic acid were investigated. The results showed that pH was an important factor. The delignification rate increased with increasing pH to the value of 6. High delignification rate was obtained when the pulp was chelated with Na4 -EDTA prior to the peroxyacetic acid stage. Therefore, delignification reaction rate depends on peroxyacid charge, temperature, pH and metal content of pulp.