Hot-Water Extraction of Aspen Woodchips Prior to Pulping

This paper discusses the kinetic of hot-water extraction of Aspen woodchips. The Aspen woodchips are obtained from Alberta Pacific Forestry Industries, Inc., Boyle, Alberta. The extraction was carried out in hot-water at various temperatures and wood to water ratios. It has been observed that the level of extraction increases with increasing temperature and time. The wood to liquor ratio has little effect on the level of extraction for the range of parameters studied. Further studies were carried out for the pulping of the hot-water extracted woodchips.