Evaluation of biomass-derived solvents and protic ionic liquids as lignin-selective pretreatment agents for poplar fractionation

Haykir N. I.

Journal of Wood Chemistry and Technology, cilt.42, sa.2, ss.91-103, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 42 Sayı: 2
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1080/02773813.2022.2033781
  • Dergi Adı: Journal of Wood Chemistry and Technology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, CAB Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Veterinary Science Database, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.91-103
  • Anahtar Kelimeler: Poplar, protic ionic liquid, gamma-valerolactone, levulinic acid, enzymatic hydrolysis, GAMMA-VALEROLACTONE, LIGNOCELLULOSIC BIOMASS, CELLULOSE, DISSOLUTION, DECONSTRUCTION, SOLUBILIZATION, HYDROLYSIS, EXTRACTION, EFFICIENT, SEVERITY
  • Ankara Üniversitesi Adresli: Evet

Özet

© 2022 Taylor & Francis Group, LLC.In this study, mixtures of protic ionic liquids (PILs) and biomass derived solvents; gamma-valerolactone (GVL), levulinic acid (LA) and H2O at different weight percentages were used to pretreat poplar. GVL addition up to 60% enhanced delignification in biomass that is subjected to MEAHSO4-GVL-H2O; cellulose content of the biomass increased from 42% to 74% with 67% lignin removal. Aqueous solution of LA used for the first time to pretreat a biomass performed better than TEAHSO4-H2O. LA-H2O at 80%-20% resulted in 70% lignin extraction and preserved 89% of the cellulose in the structure which were also verified with SEM, FTIR and XRD analysis displaying clear cellulose macrofibers, lignin signals with lower intensities and higher biomass crystallinity, respectively. Accordingly, enzymatic conversion of LA pretreated poplar released 43 g/L glucose at 10% substrate loading. Findings showed the potentials of biomass derived solvents, GVL and LA and PILs and their aqueous mixtures to selectively deconstruct poplar.