In this work, the influence of metal cations on the removal of lignin during kraft pulp washing
has been studied. The interaction of metal cations with kraft lignin in alkaline solutions has …

Previously, it was shown that chlorine dioxide delignification (D0) modifies kraft residual
lignin by oxidizing phenolic groups to both quinonoid and muconic structures in∼ 2‐to‐1 …

The present investigation meticulously analyzes how oxidative alkaline extraction can be
augmented through process changes, and how these augmentations can be leveraged to …

Hexenuronic acids (HexA) has been the subject of much research since the mid-1990s
when it was discovered that these functional groups can contribute to the measured kappa …

Caustic extractions performed with> 50% ethanol solutions severely hindered lignin removal
from chlorine dioxide (D0) treated pulps. In this study, we show that the alkali solubility of an …

Chlorine dioxide delignification (D0) stages performed in 90% ethanol resulted in post-D0
kappa numbers that were 2 to 2.5 units lower than those performed in water. In spite of the …

Kraft pulps delignified with ethanol-based chlorine dioxide (D0) stages yielded pulps with
higher brightness levels than aqueous D0 stages. However, when these pulps were …

The alkaline extraction stage plays a pivotal role in the residual lignin removed from the pulp
during Elemental Chlorine-Free (ECF) bleaching. The goal of this paper is to review and …

Acid peroxide delignification of softwood kraft pulps catalyzed by molybdenum-and tungsten-
based polyoxometalates (POMs) resulted in pulps with reduced kappa numbers but little …

Research has been conducted to determine whether an ethanol-water medium could
improve the removal of residual lignin from an unbleached softwood kraft pulp during ClO2 …