Abstract
For the utilization of each lignin fraction in the lignin liquors, the development of separation strategies to fractionate the lignin streams by molecular weight ranges constitutes a timely challenge to be tackled. Herein, membrane filtration was applied to the refining of lignin streams obtained from a lignin-first biorefining process based on H-transfer reactions catalyzed by Raney Ni, by using 2-PrOH as a part of the lignin extraction liquor and as an H-donor. A two-stage membrane cascade was considered to separate and concentrate the monophenol-rich fraction from the liquor. Building on the results, an economic evaluation of the potential of membrane filtration for the refining of lignin streams was undertaken. In this proof-of-concept report, a detailed analysis is presented of future developments in the performance required for the utilization of membrane filtration for lignin refining and, more aspiringly, solvent reclamation.
Original language | English |
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Pages (from-to) | 1203-1212 |
Number of pages | 10 |
Journal | ChemSusChem |
Volume | 12 |
Issue number | 6 |
Early online date | 25 Feb 2019 |
DOIs | |
Publication status | Published - 21 Mar 2019 |
Bibliographical note
H2020 European Research Council. Grant Number: ERC Consolidator Grant LIGNINFIRST (Project Number: 725762).Keywords
- economic evaluation
- H-transfer reactions
- lignin-first biorefining
- membrane fractionation
- Raney Ni