Systematic Review on Isolation Processes for Technical Lignin

Marlene Kienberger*, Silvia Margareta Maitz, Thomas Michael Pichler, Paul Demmelmayer

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review


Technologies for the isolation of lignin from pulping process streams are reviewed in this article. Based on published data, the WestVaco process, the LignoBoost process, the LigoForce SystemTM and the SLRP process are reviewed and discussed for the isolation of lignin from Kraft black liquor. The three new processes that have now joined the WestVaco process are compared from the perspective of product quality. Further, isolation processes of lignosulfonates from spent sulfite liquor are reviewed. The limitation for this review is that data are only available from lab scale and pilot scale experiments and not from industrial processes. Key output of this paper is a technology summary of the state of the art processes for technical lignins, showing the pros and cons of each process
Original languageEnglish
Article number804
Number of pages18
Issue number5
Publication statusPublished - 2021


  • Kraft lignin
  • Lignin isolation processes
  • Lignosulfonates
  • Technical lignin

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Bioengineering
  • Process Chemistry and Technology

Fields of Expertise

  • Sustainable Systems

Treatment code (Nähere Zuordnung)

  • Review


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