TITLE

Calculation of Kinetic Parameters of the Thermal Decomposition of Wood by Distributed Activation Energy Model (DAEM)

AUTHOR(S)
Gašparovič, L.; Labovský, J.; Markoš, J.; Jelemenský, L'.
PUB. DATE
March 2012
SOURCE
Chemical & Biochemical Engineering Quarterly;Mar2012, Vol. 26 Issue 1, p45
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This work deals with pyrolysis decomposition of wood chips and the main components of wood by thermogravimetric analysis (TGA). Experiments were carried out in the inert atmosphere of nitrogen. The pyrolysis temperature range was varied linearly from 20 °C to 900 °C with the heating rate equal to 5 K min1 to detect all the changes without overlapping. Samples of cellulose, hemicellulose and lignin were used as main components of wood. Thermogravimetric (TG) and differential thermogravimetric (DTG) curves were obtained from experimental data. These records were compared with those obtained by mathematical modeling. The distribution activation energy model (DAEM) was used for mathematical description of experimental data and the prediction of kinetic parameters. According to the DAEM approach, every possible decomposition reaction with various values of activation energies is in progress at each time and temperature. Preexponential factors, mean activation energy and variance were obtained as kinetic parameters. This model is able to describe the integral decomposition curve of biomass, however, a problem occurs when describing the differential curve of biomass thermal decomposition. In general, this model does not accurately describe the decomposition of materials, which are a mixture of several compounds.
ACCESSION #
75653465

 

Related Articles

  • Thermogravimetry study of the pyrolytic characteristics and kinetics of macro-algae Macrocystis pyrifera residue. Zhao, Hui; Yan, Huaxiao; Dong, Shuangshuang; Zhang, Yan; Sun, Binbin; Zhang, Congwang; Ai, Yanxiang; Chen, Biaoqi; Liu, Qi; Sui, Tongtong; Qin, Song // Journal of Thermal Analysis & Calorimetry;Mar2013, Vol. 111 Issue 3, p1685 

    Macrocystis pyrifera is one important marine macro-algae, while its residues produced by industrial alginate extraction is a hot potato. To figure out whether its residue is suitable for pyrolysis for biofuel, the pyrolytic characteristics and kinetics of macro-algae M. pyrifera residue was...

  • Determination of salutary parameters to facilitate bio-energy production from three uncommon biomasses using thermogravimetric analysis. Sasmal, Soumya; Goud, Vaibhav; Mohanty, Kaustubha // Journal of Thermal Analysis & Calorimetry;Mar2013, Vol. 111 Issue 3, p1649 

    Fuels derived from biomass are renewable as well as environment friendly. In this study, three biomasses viz. husk of areca nut ( Areca catheu), trunks of moj ( Albizzia lucida), and bon bogori ( Ziziphus rugosus) available in North-East region of India were tested as potential biofuel sources....

  • Thermogravimetric and kinetic analysis of energy crop Jerusalem artichoke using the distributed activation energy model. Li, Lili; Wang, Gang; Wang, Shaoyu; Qin, Song // Journal of Thermal Analysis & Calorimetry;Dec2013, Vol. 114 Issue 3, p1183 

    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...

  • Thermogravimetry study of pyrolytic characteristics and kinetics of the giant wetland plant Phragmites australis. Zhao, Hui; Yan, Huaxiao; Zhang, Congwang; Sun, Binbin; Zhang, Yan; Dong, Shuangshuang; Xue, Yanhui; Qin, Song // Journal of Thermal Analysis & Calorimetry;Nov2012, Vol. 110 Issue 2, p611 

    The pyrolytic characteristics and kinetics of wetland plant Phragmites australis was investigated using thermogravimetric method from 50 to 800 °C in an inert argon atmosphere at different heating rates of 5, 10, 25, 30, and 50 °C min. The kinetic parameters of activation energy and...

  • Kinetic features of stationary photoinitiated copolymerization of bifunctional methacrylates till high conversions. Comparison of experimental and calculated data. Khovanets', G. I.; Medvedevskykh, Y. G. // Polymer Journal (18181724);2011, Vol. 33 Issue 1, p268 

    In this work the data on kinetics of bifunctional methacrylates photoinitiated copolymerization till high conversions of the experimental and calculated kinetic curves ones in accordance with the developed kinetic model of three-dimensional copolymerization based on the microheterogeneity...

  • COMBUSTION CHARACTERISTICS AND KINETIC ANALYSIS OF BIOMASS CHAR-ANTHRACITE COAL BLENDS. Zhe Jiang; Jian-Liang Zhang; Zheng-Wen Hu; Xin-Jie He; Shan Ren // Metalurgia International;Jan2012, Vol. 17 Issue 1, p22 

    Experimental research on non-isothermal combustion characteristics and dynamic parameters of biomass char-anthracite coal blends were conducted by thermo-gravimetric balance. The combustion characteristics parameters such as ignition temperature, the temperature at maximum weight loss rate,...

  • Pyrolysis Characteristics and Kinetics of Walnut Shell. Fusheng YANG; Ming ZHANG; Minqun LIN; Benlong WEI; Zhiyuan YANG // Applied Mechanics & Materials;2014, Vol. 713-715, p2993 

    Pyrolysis behavior and kinetics of walnut shell were investigated using thermogravimetic analysis in this study. It was shown that kinetics parameters and model of the walnut shell pyrolysis were determined by the relevant parameter of kinetics calculated using Achar differential and the...

  • An advanced reaction model determination methodology in solid-state kinetics based on Arrhenius parameters variation. Shahcheraghi, Seyed; Khayati, Gholam; Ranjbar, Mohammad // Journal of Thermal Analysis & Calorimetry;Jan2016, Vol. 123 Issue 1, p221 

    Overlapping of parallel or consecutive reactions caused to variation of activation energy and pre-exponential factor and deconvolution of simultaneous reactions rather than fitting the experimental curve by assuming variable kinetic parameters could supply a deeper conception into the...

  • Combustion Kinetic Analysis of Lignite in Different Oxygen Concentration. Yong-feng Zhang; Xiang-yun Chen; Quan Zhou; Qian-cheng Zhang; Chun-ping Li // Advanced Materials Research;2014, Issue 884-885, p37 

    Combustion behavior of indigenous lignite in oxygen-enriched conditions was investigated by using thermogravimetric analyzer (TGA). Combustion tests were carried out in different oxygen concentration (21%O2/79%N2, 30%O2/70%N2, 40%O2/60%N2, 50%O2/50%N2, 60%O2/40%N2, 70%O2/30%N2). Then get the...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics