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Deploying sustainable hydrochars from food waste as solid fuels: The limits of thermogravimetric analysis to describe true combustion behavior

https://doi.org/10.1016/j.renene.2025.123221

Pecchi, Matteo; Motiei, Parvaneh; Adair, James L; O'Connor, Jacqueline; Goldfarb, Jillian L (August 2025, Renewable Energy)

Free, publicly-accessible full text available August 1, 2026
Role of volatile secondary char on the combustion behavior of cellulose-based hydrochars

https://doi.org/10.1016/j.combustflame.2024.113703

Motiei, Parvaneh; Pecchi, Matteo; Adair, James L; Goldfarb, Jillian L; O'Connor, Jacqueline (November 2024, Combustion and Flame)

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Ignition characteristics of cellulose hydrochar using in-situ diagnostics

Motiei, Parvaneh; Pecchi, Matteo; Adair, James; Goldfarb, Jillian; O'Connor, Jacqueline (March 2024, Combustion Institute)

This work investigates the ignition behavior of cellulose hydrochar fuels carbonized at two different temperatures. Particles are burned in a Hencken burner under various O2/N2 mixtures where the impacts of ambient temperature and oxygen mole fractions are assessed independently. CH* chemiluminescence imaging and particle image velocimetry are used to characterize the ignition delay time. Results reveal that for both hydrochars ignition delay time is inversely proportional to the surrounding gas temperature. Ignition delay time shows a non-monotonic dependency on O2 mole fraction. Increasing the O2 fraction decreases the ignition delay time until O2 concentration is at a critical value, after which it increases.
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Pairing combustion experiments and thermogravimetric analysis to uncover timescales controlling cellulose ignition and burnout in a Hencken burner

https://doi.org/10.1016/j.combustflame.2023.113092

Motiei, Parvaneh; Pecchi, Matteo; Adair, James L; Goldfarb, Jillian L; O'Connor, Jacqueline (December 2023, Combustion and Flame)

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