Journal
CHEMSUSCHEM
Volume 12, Issue 6, Pages 1203-1212Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201802747
Keywords
economic evaluation; H-transfer reactions; lignin-first biorefining; membrane fractionation; Raney Ni
Funding
- ERC Consolidator Grant LIGNINFIRST [725762]
- European Research Council (ERC) [725762] Funding Source: European Research Council (ERC)
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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.
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