Thermal ignition kinetics of wood sawdust measured by a newly devised experimental technique

Authors

  • Li V. Chong,

    1. Department of Chemical and Materials Engineering, The University of Auckland, Private Bag 92019, Auckland, New Zealand
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  • Ian R. Shaw,

    1. Department of Chemical and Materials Engineering, The University of Auckland, Private Bag 92019, Auckland, New Zealand
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  • X. Dong Chen

    Corresponding author
    1. Department of Chemical and Materials Engineering, The University of Auckland, Private Bag 92019, Auckland, New Zealand
    • Department of Chemical and Materials Engineering, The University of Auckland, Private Bag 92019, Auckland, New Zealand
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Abstract

The activation energies of two wood sawdusts were determined using an experimental technique based on the crossing-point temperature concept, which was derived from the transient model of self-heating in a solid. The two samples used in this study were treated and untreated sawdust. The activation energies measured were 106 ± 4 kJ mol−1 for the treated sawdust and 90 ± 3 kJ mol−1 for the untreated sawdust. These values are similar to those in previously published results which were obtained using the steady-state model. The transient model provides a quicker yet sufficiently accurate method of determining thermal ignition kinetics.

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