Journal
BIORESOURCE TECHNOLOGY
Volume 192, Issue -, Pages 441-450Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.05.062
Keywords
Lignocellulosic biomass; Kinetics; Non-isothermal thermogravimetric analysis; Three-parallel-DAEM model
Funding
- Jiangsu Province Science and Technology support program, China [BE2013127]
- Fundamental Research Funds for the Central Universities [2013TS070]
- National High Technology Research and Development Program (863 Program) of China [2012AA101809]
- Natural Science Foundation of Hainan Province [414194]
- SRF for ROCS, SEM, China
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Pyrolysis characteristics and kinetic of five lignocellulosic biomass pine wood sawdust, fern (Dicranopteris linearis) stem, wheat stalk, sugarcane bagasse and jute (Corchorus capsularis) stick were investigated using thermogravimetric analysis. The pyrolysis of five lignocellulosic biomass could be divided into three stages, which correspond to the pyrolysis of hemicellulose, cellulose and lignin, respectively. Single Gaussian activation energy distributions of each stage are 148.50-201.13 kJ/mol with standard deviations of 2.60-13.37 kJ/mol. The kinetic parameters of different stages were used as initial guess values for three-parallel-DAEM model calculation with good fitting quality and fast convergence rate. The mean activation energy ranges of hemicellulose, cellulose and lignin were 148.12-164.56 kJ/mol, 171.04-179.54 kJ/mol and 175.71-201.60 kJ/mol, with standard deviations of 3.91-9.89, 0.29-1.34 and 23.22-27.24 kJ/mol, respectively. The mass fractions of hemicellulose, cellulose and lignin in lignocellulosic biomass were respectively estimated as 0.12-0.22, 0.54-0.65 and 0.17-0.29. (C) 2015 Elsevier Ltd. All rights reserved.
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