Journal
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
Volume 89, Issue 1, Pages 128-136Publisher
WILEY
DOI: 10.1002/jctb.4123
Keywords
chemical structure; Fagus sylvatica L; formic; acetic acid treatment; lignin; response surface methodology
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Funding
- 'Fonds pour la Recherche scientifique dans l'Industrie et l'Agriculture' (FRIA)
- Walloon Region (Technose excellence research Program) [716757]
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BackgroundIn order to replace petrochemicals by bio-based lignin products in high value-added applications, a formic/acetic acid treatment was adapted to beech wood (Fagus sylvatica L.) for lignin extraction. ResultsBeech wood particles were delignified at atmospheric pressure by a formic acid/acetic acid/water mixture. Cooking time and temperature were optimized for delignification, pulp yield and 2-furfural concentration. Response surface design analysis revealed that delignification yield increased with cooking time and temperature. ConclusionThe multi-criteria optimization of delignification was used to find the ideal cooking conditions (5 h 07 min, 104.2 degrees C) to maximize delignification (70.5%) and pulp yield (58.7%) and, to a lesser extent, minimize 2-furfural production. Treatment conditions were found to influence the chemical structure of extracted lignins. Cooking time and temperature inversely influenced lignin molecular weights. (c) 2013 Society of Chemical Industry
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