Cited by 7Biofuel production and bioconversionAdvanced Cellulose Research StudiesLignin and Wood Chemistry

Optimization of Microwave-Assisted Organosolv Cellulose Recovery from Olive-Tree Pruning with Three Different Solvents

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Mateo, Soledad, Fabbrizi, Giacomo, Chapeta, M. Renee, Moya, Alberto J.·2024·Applied Sciences

Abstract

Research studies for cellulose recovery from lignocellulosic materials are essential in order to propose sustainable alternatives to harness residual biomasses, solving problems caused by their abundance and inadequate use. In this study, olive-tree pruning biomass has been subjected to different pretreatments with different organosolvents (acetone, ethanol, and γ-valerolactone) with microwave radiation assistance. The effect of operating parameters has been studied, considering specific ranges of variables values according to each experimental design but, in any case, located in the ranges of 33–67% (chemical compound concentration), 130–170 °C (temperature), 5–30 min (reaction time), and 1/20–1/5 (solid/liquid ratio, s/L). Based on the R2 and R2adj values (mostly above 0.97), the experimental data were adequately adjusted to four selected response variables: post-solids cellulose and lignin content apart from removal percentages of both structural components. The optimization process resulted in post-treatment solids with meaningful cellulose yields (higher than 84.7%) and reduced lignin content (lower than 4.2%). The best results were obtained using 66.5% acetone (155 °C, 8.4 min and s/L = 1/19), involving greater material deconstruction, a high percentage of delignification (96.7%), not very significant cellulose loss (29.4%), and a post-treatment solid consisting almost exclusively of cellulose (≈99%).

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Crossref · 10.3390/app142210670

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70 of 70 references verified0 citation errors · 0 not checkable

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Authors
Mateo, S., Fabbrizi, G., Chapeta, M. R., & Moya, A. J.
Affiliations
  • Universidad de Jaén (ES)
  • University of Perugia (IT)
Corresponding author
Mateo, Soledad
Venue
Applied Sciences
Publisher
MDPI AG
Published
2024-11-19
Volume
14
Issue
22
Pages
10670
ISSN
2076-3417 (ISSN-L)
OpenAlex
W4404502338
Cited by
7
References
70
Citations by year
2026: 5 · 2025: 2
FWCI
0.77
Type
journal article
Language
en
Open access
Locations
  • Applied Sciences (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
  • Physical Sciences › Materials Science › Biomaterials › Advanced Cellulose Research Studies
  • Physical Sciences › Engineering › Biomedical Engineering › Lignin and Wood Chemistry
Keywords
cellulose recovery, organosolv pretreatment, microwave pretreatment, olive pruning, lignocellulosic biomass, acetone, ethanol, γ-valerolactone, lignin removal, cellulose yield, solid-to-liquid ratio, process optimization

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