Biomass torrefaction: Modeling of reaction thermochemistry
Open accessAbstract
Based on the evolution of volatile and solid products predicted by a previous model for willow torrefaction (Bates and Ghoniem, 2012) a thermochemical model has been developed to describe their thermal, chemical, and physical properties as well as the rates of heat release. The first stage of torrefaction, associated with hemicellulose decomposition, is exothermic releasing between 40 and 280 kJ/kginitial. The second stage is associated with the decomposition of the remaining lignocellulosic components, completes over a longer period, and is predicted to be either endothermic or exothermic depending on the temperature and assumed solid properties. Cumulative heat release increases with the degree of torrefaction quantified by the mass loss. The rate of mass loss and rate of heat release increase with higher temperatures. The higher heating value of volatiles produced during torrefaction was estimated to be between 4.4 and 16 MJ/kg increasing with the level of mass loss.
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- Authors
- Bates, R. B., & Ghoniem, A. F.
- Affiliations
- Massachusetts Institute of Technology (US)
- Corresponding author
- Bates, Richard B.
- ORCID
- Ghoniem, Ahmed F.
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2013-04
- Volume
- 134
- Pages
- 331-340
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W2057085443
- Cited by
- 116
- References
- 1
- Citations by year
- 2026: 3 · 2025: 8 · 2024: 2 · 2023: 6 · 2022: 14 · 2021: 11 · 2020: 10 · 2019: 16 · 2018: 9 · 2017: 9 · 2016: 6 · 2015: 10 · 2014: 11 · 2013: 1
- FWCI
- 5.15
- Type
- journal article
- Language
- en
- Open access
- green
- hdl.handle.net
- Licence
- cc-by-nc-nd
- www.elsevier.com/tdm/userlicense/1.0/ (tdm)
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc-nd)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
- Physical Sciences › Materials Science › Materials Chemistry › Thermal and Kinetic Analysis
- Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
- Keywords
- torrefaction, biomass, thermochemical modeling, willow, hemicellulose degradation, heat release, mass loss, higher heating value, volatile products, lignocellulosic biomass
- MeSH terms
- Biotechnology, Models, Chemical, Temperature, Time Factors, Volatilization, Biomass
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