Pyrolysis of walnut shell biomass in fluidized bed reactor: Determination of optimum conditions for bio-char production

The pyrolysis of the walnut shell was carried out in a lab-scale continuous fluidized bed reactor at a temperature range of 400 to 600 °C. Thermogravimetric analysis technique was used to determine the thermal properties of the walnut shell. The bio-char product obtained from pyrolysis was analyzed to evaluate the effect of the pyrolysis temperature. Increasing the pyrolysis temperature to 600 °C improved the High Heating Value (HHV) and % C value of the bio-char product. These results showed that the optimum temperature value for bio-char production from walnut shell was 600 °C.

Keywords:

Biomass, Bio-char, Fluidized Bed Reactor Walnut shell, Pyrolysis,

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[1] M.S. Masnadi, R. Habibi, J. Kopyscinski, J.M. Hill, X. Bi, C.J. Lim, N. Ellis, J.R Grace, “Fuel characterization and co-pyrolysis kinetics of biomass and fossil fuels,” Fuel, 117, 1204–1214. 2014.
[2] H. Ly Vu, S.S. Kim, H.C. Woo, J.H. Choi, D.J. Suh, J. Kim, “Fast pyrolysis of macroalga Saccharina japonica in a bubbling fluidized bed reactor for bio-oil production,” Energy, 93, 1436-1446. 2015.
[3] M. Tripathi, J.N. Sahu, P. G, “Effect of process parameters on production of biochar from biomass waste through pyrolysis: A review,” Renewable and Sustainable Energy Reviews, 55, 467–481. 2016.
[4] Y.J. Zhang, Z.J. Xing, Z.K. Duan, M. Li, Y. Wang, “Effects of steam activation on the pore structure and surface chemistry of activated carbon derived from bamboo waste”, Appl. Surf. Sci., 315, 279–286, 2014.
[5] D. Czajczynska, L. Anguilano, H. Ghazal, R. Krzyzynska, A.J. Reynolds, N. Spencer, H. Jouhara, “Potential of pyrolysis processes in the waste management sector”, Thermal Science and Engineering Progress, 3, 171–197, 2017.
[6] N. Soyler, J. L. Goldfarb, S. Ceylan, M. T. Saçan, “Renewable fuels from pyrolysis of Dunaliella tertiolecta: An alternative approach to biochemical conversions of microalgae,” Energy, 1-8, 2016.
[7] M. A. Mehmood, G. Ye, H. Luo, C. Liu, S. Malik, I. Afzal, J. Xu, M. S. Ahmad, “Pyrolysis and kinetic analyses of Camel grass (Cymbopogon schoenanthus) for bioenergy,” Bioresorce Technology, 228, 18–24, 2017.
[8] H. Karatas, F. Akgun, “Experimental results of gasification of walnut shell and pistachio shell in a bubbling fluidized bed gasifier under air and steam atmospheres,” Fuel, 214, 285–292, 2018.
[9] B. B. Uzun, E. Yaman, “Pyrolysis kinetics of walnut shell and waste polyolefins using thermogravimetric analysis,” Journal of the Energy Institute, 90, 825-837, 2017.
[10] S. Abhishek, P. Vishnu, Z. Dongke, “Biomass pyrolysis—A review of modelling, process parameters and catalytic studies,” Renewable and Sustainable Energy Reviews, 50, 1081–1096, 2015.
[11] X. Yuan, Z. Shuai, B. Robert C., K. Atul, B. Xianglan, “Fast pyrolysis of biomass and waste plastic in a fluidized bed reactor,” Fuel, 156, 40-46, 2015.
[12] W. Hideo, L. Dalin, N. Yoshina, T. Keiichi, K. Kunimitsu, M.W. Makoto, “Characterization of oil-extracted residue biomass of Botryococcus braunii as a biofuel feedstock and its pyrolytic behavior,” Applied Energy, 132, 475-484, 2014.