期刊
BIORESOURCE TECHNOLOGY
卷 101, 期 14, 页码 5638-5644出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.02.037
关键词
Biomass; Mimosa; Pyrolysis; Renewable energy; Thermal decomposition
资金
- Thailand Research Fund [RSA5080010]
- Faculty of Engineering, Chiang Mai University
- Royal Golden Jubilee [PHD/0047/2550]
- Energy Research and Development Institute, Chiang Mai University
A giant sensitive plant (Mimosa pigra L.) or Mimosa is a fast growing woody weed that poses a major environmental problem in agricultural and wet land areas. It may have potential to be used as a renewable energy source. In this work, thermal behaviour of dried Mimosa was investigated under inert atmosphere in a thermogravimetric analyzer at the heating rates of 10, 30, and 50 degrees C/min from room temperature to 1000 degrees C. Pyrolysis kinetic parameters in terms of apparent activation energy and pre-exponential factor were determined. Two stages of major mass loss occurred during the thermal decomposition process, corresponding to degradation of cellulose and hemicellulose between 200-375 degrees C and decomposition of lignin around 375-700 degrees C. The weed mainly devolatilized around 200-400 degrees C, with total volatile yield of about 60%. The char in final residue was about 20%. Mass loss and mass loss rates were strongly affected by heating rate. It was found that an increase in heating rate resulted in a shift of thermograms to higher temperatures. As the heating rates increased, average devolatilization rates were observed to increase while the activation energy decreased. (C) 2010 Elsevier Ltd. All rights reserved.
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