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Holistic valorization of hemp through reductive catalytic fractionation
- Source :
- ACS Sustainable Chemistry & Engineering
- Publication Year :
- 2021
- Publisher :
- HAL CCSD, 2021.
-
Abstract
- Despite the increased use of hemp fiber, negligible attention has been given to upgrade the hemp hurd, which constitutes up to 70 wt % of the hemp stalk and is currently considered a low-value byproduct. In this work, valorization of hemp hurd was performed by reductive catalytic fractionation (RCF) in the presence of a metal catalyst. We found an unexpectedly high yield of monophenolic compounds (38.3 wt %) corresponding to above 95% of the theoretical maximum yield. The high yield is explained by both a thin cell wall and high S-lignin content. In addition, organosolv pulping was performed to generate a pulp that was bleached to produce dissolving-grade pulp suitable for textile fiber production (viscosity, 898 mL/g; ISO-brightness, 90.2%) and nanocellulose. Thus, we have demonstrated a novel value chain from a low-value side stream of hemp fiber manufacture that has the potential to increase textile fiber production with 100% yield and also give bio-oil for green chemicals.<br />Hemp hurd, a byproduct from hemp fiber production, was successfully valorized by reductive catalytic fractionation to give high yields of monophenolic compounds and a pulp suitable for textiles or nanocellulose.
- Subjects :
- Letter
Renewable Energy, Sustainability and the Environment
General Chemical Engineering
General Chemistry
Biomass valorization
Lignin
Hemp hurd
Reductive catalytic fractionation
Monophenolic compounds
Environmental Chemistry
Organosolv pulping
[PHYS.MECA] Physics [physics]/Mechanics [physics]
Dissolving pulp
Nanocellulose
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- ACS Sustainable Chemistry & Engineering
- Accession number :
- edsair.doi.dedup.....77d5fbdc709113047de196e7f41e09b4