| Autor: |
Gu, Sangseo, Choi, Jae-Wook, Lee, Hyunjoo, Suh, Dong Jin, Choi, Jungkyu, Ha, Jeong-Myeong |
| Předmět: |
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| Zdroj: |
Environmental Pollution; Jan2021:Part A, Vol. 268, pN.PAG-N.PAG, 1p |
| Abstrakt: |
or sugar-derived compounds were used as environmentally friendly additives for the depolymerization of Kraft lignin waste and organosolv lignin prepared from Miscanthus giganteus. The yields of the aromatic monomers obtained from Kraft lignin increased from 5.1 to 49.2% with the addition of mannitol, while those obtained from organosolv lignin increased from 44.4 to 83.0% with the addition of sucrose. This improved lignin depolymerization was also confirmed by gel permeation chromatography and nuclear magnetic resonance spectroscopy. The above results clearly indicate the beneficial effects of carbohydrate derivatives on the lignin depolymersization process, more specifically, suggesting that the presence of carbohydrates improve the lignin depolymerization of lignocellulose, as observed for the raw lignocellulose feed. Image 1 • Carbohydrate-derived additives were used in the depolymerization of lignin. • The aromatic monomer yields from Kraft lignin and organosolv lignin increased. • Mannitol and sucrose were found to most improve the aromatic monomer yields. • Carbohydrates improved the lignin depolymerization of lignocellulose. • The improved depolymerization was confirmed by GPC and NMR studies. Main finding: The addition of carbohydrate derivatives improved the catalytic depolymerization of lignin waste to phenolic compounds. [ABSTRACT FROM AUTHOR] |
| Databáze: |
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