The Kismet of Residual Lignins During LMS Delignification of High-Kappa Kraft Pulps

摘要

A series of laccase-mediator treatments (LMS) with 1-hydroxybenzotriazole (HBT) and N-acetyl-N- phenylhydroxylamine (NHAA) (Fig. 1) as the mediators were performed on a laboratory prepared south- ern softwood conventional kraft pulp (kappa # 75.4). Subsequent to the LMS treatments, the treated pulps were subjected to various oxidatively reinforced alkaline extraction stages (E~*). The kappa results suggested that both LMS_HBT and LMS_NHAA treatments delignified this high-kappa pulp.