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Received June 8, 2015
Accepted August 31, 2015
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Synergetic effect of biomass mixture on pyrolysis kinetics and biocrude-oil characteristics
1Department of Environment and Energy Mechanical Engineering, Korea University of Science and Technology, Daejeon 34113, Korea 2Environmental and Energy System Research Division, Korea Institute of Machinery and Materials, Daejeon 34103, Korea
Korean Journal of Chemical Engineering, February 2016, 33(2), 603-609(7), 10.1007/s11814-015-0194-8
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Abstract
Biocrude-oil characteristics were investigated from fast pyrolysis of a mixture of Douglas fir and coffee ground. The mixture was prepared on a 1 : 1 weight basis and pyrolyzed in a bubbling fluidized bed reactor. Characteristics of biocrude-oil were compared at various reaction temperatures ranging from 673-873K. The mixture resulted in a more improved quality biocrude-oil than each biomass feedstock at the reaction temperature of 823 K with significantly low atomic ratio of 0.43 O/C. The kinetic parameters for biomass decomposition were investigated through Friedman, KAS, FWO and CC isoconversional models. In mixture pyrolytic conversion range of 0.1-0.8, the average activation energy was found to be 135 kJ/mol. The results showed that pyrolysis of coffee ground with Douglas fir has more synergetic effect than individual biomass, which leads to a potentially higher quality fuel with lower activation energy to that of biomass.
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Abnisa F, Arami-Niya A, Daud WMAW, Sahu JN, Bioenergy Res., 6, 830 (2013)
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Park YH, Kim J, Kim SS, Park YK, Bioresour. Technol., 100(1), 400 (2009)
Othman MR, Park YH, Ngo TA, Kim SS, Kim J, Lee KS, Korean J. Chem. Eng., 27(1), 163 (2010)
Sait HH, Hussain A, Salema AA, Ani FN, Bioresour. Technol., 118, 382 (2012)
Reina J, Velo E, Puigjaner L, Ind. Eng. Chem. Res., 37(11), 4290 (1998)
Vamvuka D, Kakaras E, Kastanaki E, Grammelis P, Fuel, 82(15-17), 1949 (2003)
Jeguirim M, Limousy L, Dutournie P, Chem. Eng. Res. Des., 92(10), 1876 (2014)
