Fractionation of lignocellulosics by steam-aqueous pretreatments
Abstract
Physical processing or pretreatment of lignocellulosics concerns the ultrastructural modification of materials such as wood, straw and bagasse. The substrates produced can be subsequently converted by chemicals. The various pretreatment options will be discussed in the light of the ultrastructural, polymeric and chemical modifications that are obtained. The processes can be classified as follows: (i) steam; (ii) aqueous; and (iii) organosolvolysis treatments. All of these have their antecedents in the thermomechanical processes developed by the pulp and paper or fibreboard industries. Sequential application of thermomechanical technology leads to fractionation of the substrate into the major polymeric fractions: cellulose, hemicellulose and lignin in varying degrees of modification. A number of pretreatment concepts are now at a commercial scale and are being applied to produce foodstuffs from lignocellulosics for use by ruminant animals. The same techniques are being piloted in the energy and chemicals from lignocellulosics field.
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The severity factor concept was originally introduced by Geniesse and Reuter to model cracking of oils and was later developed to characterize hydrolytic depolymerization of lignocellulosic biomass.
“This concept was originally introduced by Geniesse and Reuter [73] to model the cracking of oils, and was developed later to characterize the hydrolytic depolymerization of lignocellulosic biomass [74, 75].”
From Hydrothermal Carbonization of Organic Waste and Biomass: A Review on Process, Reactor, and Plant Modeling (2021) · cites this paper as [74]
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- Authors
- Overend, R. P., & Chornet, E.
- Affiliations
- Université de Sherbrooke (CA)
- ORCID
- Overend, R. P.
- Venue
- Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences
- Publisher
- The Royal Society
- Published
- 1987-04-30
- Volume
- 321
- Issue
- 1561
- Pages
- 523-536
- ISSN
- 0080-4614 (ISSN-L)
- 2054-0272
- OpenAlex
- W1677000125
- Cited by
- 1,288
- References
- 0
- Citations by year
- 2026: 32 · 2025: 41 · 2024: 41 · 2023: 45 · 2022: 69 · 2021: 83 · 2020: 92 · 2019: 81 · 2018: 69 · 2017: 69 · 2016: 73 · 2015: 81 · 2014: 57 · 2013: 62 · 2012: 80
- FWCI
- 3.25
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Philosophical Transactions of the Royal Society of London Series A Mathematical and Physical Sciences (publishedVersion)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
- Physical Sciences › Engineering › Biomedical Engineering › Lignin and Wood Chemistry
- Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
- Keywords
- lignocellulosic biomass, pretreatment, steam pretreatment, thermomechanical pulping, cellulose, hemicellulose, lignin, biomass fractionation, ruminant feed, bioenergy
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