Optimization of Lignofiber (LGF) organosolv process for fractionation of lignocellulosics

Heli Kangas, Terhi Hakala, Sari Hyvärinen, Marjo Määttänen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific


The aim of this work was to optimize the LGF organosolv process using acetic acid as the solvent, by attempting to enhance the xylan recovery and to increase the dissolution of lignin during the process. In addition, the goal was to make the process more suitable for industrial purposes, by shortening the cooking time. Xylan recovery prior to LGF organosolv pulping was achieved by performing an alkaline extraction at elevated temperature and with high alkali concentration and low liquid to wood ratio. Lignin removal from the LGF pulps was greatly improved by enhanced washing of the pulps and significant reduction in cooking time can be obtained
Original languageEnglish
Title of host publication12th European Workshop on Lignocellulosics and Pulp
Subtitle of host publicationEWLP 2012 : August 27-30, 2012, Espoo, Finland : Proceedings
EditorsValtteri Mäkelä
Place of PublicationHelsinki
PublisherUniversity of Helsinki
ISBN (Print)978-952-10-8187-3
Publication statusPublished - 2012
MoE publication typeB3 Non-refereed article in conference proceedings
Event12th European workshop on lignocellulosics and pulp, EWLP 2012 - Espoo, Finland
Duration: 27 Aug 201230 Aug 2012
Conference number: 12


Conference12th European workshop on lignocellulosics and pulp, EWLP 2012
Abbreviated titleEWLP 2012


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