1. Systematic Review on Isolation Processes for Technical Lignin
- Author
-
Thomas Michael Pichler, Marlene Kienberger, Paul Demmelmayer, and Silvia Margareta Maitz
- Subjects
0106 biological sciences ,Engineering ,Process (engineering) ,Lab scale ,Bioengineering ,lignin isolation processes ,02 engineering and technology ,Kraft lignin ,TP1-1185 ,01 natural sciences ,chemistry.chemical_compound ,010608 biotechnology ,Chemical Engineering (miscellaneous) ,Lignin ,Lignosulfonates ,Isolation (database systems) ,Process engineering ,QD1-999 ,business.industry ,Process Chemistry and Technology ,Chemical technology ,Pilot scale ,021001 nanoscience & nanotechnology ,lignosulfonates ,Chemistry ,chemistry ,technical lignin ,0210 nano-technology ,business ,Black liquor ,Kraft paper - Abstract
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.
- Published
- 2021