Journal of Thermal Analysis and Calorimetry

, Volume 114, Issue 3, pp 1183–1189 | Cite as

Thermogravimetric and kinetic analysis of energy crop Jerusalem artichoke using the distributed activation energy model



Jerusalem artichoke has great potential as future feedstock for bioenergy production because of its high tuber yield (up to 90 t ha−1), appropriate biomass characteristics, low input demand, and positive environmental impact. The pyrolytic and kinetic characteristics of Jerusalem artichoke tubers were analyzed at heating rates of 5, 10, 20 and 30 °C min−1. TG and DTG curves in an inert (nitrogen) atmosphere suggested that there were three distinct stages of mass loss and the major loss occurs between about 190–380 °C. Heating rate brought a lateral shift toward right in the temperature. And, it not only affects the temperature at which the highest mass loss rate reached, but also affect the maximum rate of mass loss. The distributed activation energy model (DAEM) was used to study the pyrolysis kinetics and provided reasonable fits to the experimental data. The activation energy (E) of tubers ranged from 146.40 to 232.45 kJ mol−1, and the frequency factor (A) changed greatly corresponding to E values at different mass conversion.


Biomass Jerusalem artichoke Pyrolysis Thermogravimetric Distributed activation energy model 



This work was supported by the Ocean Public Welfare Scientific Research Project, State Oceanic Administration of China (Grant No. 201205027) and National Key Technology R&D Program of China (Grant No. 2013BAB01B00).


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2013

Authors and Affiliations

  1. 1.Yantai Institute of Coastal Zone Research, Chinese Academy of SciencesYantaiChina
  2. 2.China Agriculture UniversityYantaiChina

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