Startseite Fractionation methods of eucalyptus kraft lignin for application in biorefinery
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Fractionation methods of eucalyptus kraft lignin for application in biorefinery

  • Felipe Pedersoli Borges , Ana Márcia Macedo Ladeira Carvalho , Iara Fontes Demuner , Fernando José Borges Gomes ORCID logo , Jéssica Silva Gomes , Caio César Zandonadi Nunes , Marcela Ribeiro Coura , Laís Teixeira Rodrigues und Angélica de Cássia Oliveira Carneiro
Veröffentlicht/Copyright: 19. Dezember 2024
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Nordic Pulp & Paper Research Journal
Aus der Zeitschrift Nordic Pulp & Paper Research Journal Band 40 Heft 1

Abstract

Kraft lignin has high dispersity and low reactivity. This study aimed to obtain more homogeneous and modified chemical fractions from the application of fractionation methods using organic solvents and acid precipitation. Organic solvents used were ethyl acetate, ethanol, methanol and acetone. The pHs tested were 9, 7, 5, 3 and 1, by adding hydrochloric acid. The fractions were characterized of acid-soluble and insoluble lignin, carbohydrates, ashes, elemental analysis and by Py-GC/MS. All fractions obtained in both fractionation methods showed higher carbon contents, higher purity and lower S/G ratio than the corresponding initial materials, characteristics that are very favorable for the application in biorefinery. Acetone-soluble (sequential) and pH 1 (one-step) precipitated fractions are the most promising for carbon fiber production. Fractions soluble in ethyl acetate (one-step) and insoluble at pH 3 and 1 (sequential) appear to be the most appropriate for applications that require good oxidative properties. The fractions soluble in ethanol (one-step), methanol (one-step), acetone (one-step) and precipitated at pH 9 (one-step) and pH 5 (sequential) are the ones that allow better chemical substitution in obtaining bioproducts. Fractions soluble in ethanol (sequential) and precipitated at pHs 5 and 1 (sequential) are not of commercial interest due to their low yield.

Keywords: biorefinery; lignin; organic solvents; pH effect; chemical modification
Corresponding author: Iara Fontes Demuner, Federal University of Vicosa, Av. Peter Henry Rolfs, 36570-900, Vicosa, MG, Brazil, E-mail:

Acknowledgments

Funding provided by the Minas Gerais State Research Foundation (FAPEMIG), from the Brazilian National Council for Science and Technology Development (CNPq), Coordination for the Improvement of Higher Education Personnel (CAPES) is greatly appreciated.

  1. Research ethics: Not applicable.

  2. Informed consent: Not applicable.

  3. Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission. Conceptualization: Felipe Pedersoli Borges, Ana Márcia Macedo Ladeira Carvalho, Iara Fontes Demuner and Fernando José Borges Gomes. Methodology: Felipe Pedersoli Borges and Marcela Ribeiro Coura. Formal analysis and investigation: Felipe Pedersoli Borges, Jéssica Silva Gomes, Caio César Zandonadi Nunes and Laís Teixeira Rodrigues. Writing – original draft preparation: Felipe Pedersoli Borges. Writing – review and editing: Ana Márcia Macedo Ladeira Carvalho, Iara Fontes Demuner, Fernando José Borges Gomes, Marcela Ribeiro Coura, Jéssica Silva Gomes, Caio César Zandonadi Nunes, Laís Teixeira Rodrigues and Angélica de Cássia Oliveira Carneiro.

  4. Use of Large Language Models, AI and Machine Learning Tools: None declared.

  5. Conflict of interest: The authors state no conflict of interest.

  6. Research funding: None declared.

  7. Data availability: The raw data can be obtained on request from the corresponding author.

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Received: 2024-05-08
Accepted: 2024-11-29
Published Online: 2024-12-19
Published in Print: 2025-03-26

© 2024 Walter de Gruyter GmbH, Berlin/Boston

Artikel in diesem Heft

  1. Frontmatter
  2. Biorefining
  3. Fractionation methods of eucalyptus kraft lignin for application in biorefinery
  4. Pulp and paper industry side-stream materials as feed for the oleaginous yeast species Lipomyces starkeyi and Rhodotorula toruloides
  5. Chemical Pulping
  6. Comparing classic time series models and state-of-the-art time series neural networks for forecasting as-fired liquor properties
  7. Optimization of kraft pulping process for Sesbania aculeata (dhaincha) stems using RSM
  8. On the nature of the selectivity of oxygen delignification
  9. Unlocking potential: the role of chemometric modeling in pulp and paper manufacturing
  10. Effects of chemical environment on softwood kraft pulp: exploring beyond conventional washing methods
  11. Bleaching
  12. Variations in carbohydrates molar mass distribution during chemical degradation and consequences on fibre strength
  13. Mechanical Pulping
  14. Energy consumption in refiner mechanical pulping
  15. Paper Technology
  16. Australian wheat and hardwood fibers for advanced packaging materials
  17. Compression refining: the future of refining? Application to bleached kraft eucalyptus pulp
  18. The effect of nanocellulose to coated paper and recycled paper
  19. Interpreting the relationship between properties of wood and pulping & paper via machine learning algorithms combined with SHAP analysis
  20. Hybridization to prepare environmentally friendly, cost-effective superhydrophobic oleophobic coatings
  21. Paper Physics
  22. Characterising the mechanical behaviour of dry-formed cellulose fibre materials
  23. Paper Chemistry
  24. Study on the properties of ground film paper prepared from lactic acid-modified cellulose
  25. Environmental Impact
  26. Characterization of sludge from a cellulose pulp mill for its potential biovalorization
  27. The in situ green synthesis of metal organic framework (HKUST-1)/cellulose/chitosan composite aerogel (CSGA/HKUST-1) and its adsorption on tetracycline
  28. Evaluation of the potential use of powdered activated carbon in the treatment of effluents from bleached kraft pulp mills
  29. Recycling
  30. Waste newspaper activation by sodium phosphate for adsorption dynamics of methylene blue
https://doi.org/10.1515/npprj-2024-0037
Schlagwörter für diesen Artikel
biorefinery; lignin; organic solvents; pH effect; chemical modification

Artikel in diesem Heft

  1. Frontmatter
  2. Biorefining
  3. Fractionation methods of eucalyptus kraft lignin for application in biorefinery
  4. Pulp and paper industry side-stream materials as feed for the oleaginous yeast species Lipomyces starkeyi and Rhodotorula toruloides
  5. Chemical Pulping
  6. Comparing classic time series models and state-of-the-art time series neural networks for forecasting as-fired liquor properties
  7. Optimization of kraft pulping process for Sesbania aculeata (dhaincha) stems using RSM
  8. On the nature of the selectivity of oxygen delignification
  9. Unlocking potential: the role of chemometric modeling in pulp and paper manufacturing
  10. Effects of chemical environment on softwood kraft pulp: exploring beyond conventional washing methods
  11. Bleaching
  12. Variations in carbohydrates molar mass distribution during chemical degradation and consequences on fibre strength
  13. Mechanical Pulping
  14. Energy consumption in refiner mechanical pulping
  15. Paper Technology
  16. Australian wheat and hardwood fibers for advanced packaging materials
  17. Compression refining: the future of refining? Application to bleached kraft eucalyptus pulp
  18. The effect of nanocellulose to coated paper and recycled paper
  19. Interpreting the relationship between properties of wood and pulping & paper via machine learning algorithms combined with SHAP analysis
  20. Hybridization to prepare environmentally friendly, cost-effective superhydrophobic oleophobic coatings
  21. Paper Physics
  22. Characterising the mechanical behaviour of dry-formed cellulose fibre materials
  23. Paper Chemistry
  24. Study on the properties of ground film paper prepared from lactic acid-modified cellulose
  25. Environmental Impact
  26. Characterization of sludge from a cellulose pulp mill for its potential biovalorization
  27. The in situ green synthesis of metal organic framework (HKUST-1)/cellulose/chitosan composite aerogel (CSGA/HKUST-1) and its adsorption on tetracycline
  28. Evaluation of the potential use of powdered activated carbon in the treatment of effluents from bleached kraft pulp mills
  29. Recycling
  30. Waste newspaper activation by sodium phosphate for adsorption dynamics of methylene blue
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