Aqueous glycerol delignification of wood chips and ground wood


Demirbas A.

BIORESOURCE TECHNOLOGY, vol.63, no.2, pp.179-185, 1998 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 63 Issue: 2
  • Publication Date: 1998
  • Doi Number: 10.1016/s0960-8524(97)00063-1
  • Title of Journal : BIORESOURCE TECHNOLOGY
  • Page Numbers: pp.179-185

Abstract

Wood and agricultural materials were delignified in either glycerol or alkaline glycerol in aqueous or non-aqueous media, in an autoclave or at atmospheric pressure, for the production of pulps. In a typical run, increasing the reaction temperature from 438 to 498 K raised the lignin loss from 55.5 to 88.0%, but decreased the yield of the remaining cellulose from 91.8 to 82.3%, while using 10% sodium hydroxide catalyst for 8 h reaction time for Ailanthus wood chips. In a non-catalytic run, the results were 47.9-76.8% for lignin loss, 96.2-93.3% for remaining cellulose, in the same range of temperature and reaction time. (C) 1998 Elsevier Science Ltd. All rights reserved.