Hydrogen production from high temperature steam catalytic gasification of bio-char

Article English OPEN
Waheed, QMK ; Wu, C ; Williams, PT (2016)
  • Publisher: Elsevier

Hydrogen production from the catalytic steam gasification of bio-char derived from the pyrolysis of sugar cane bagasse has been investigated in relation to gasification temperature up to 1050 °C, steam flow rate from 6 to 25 ml h−1 and type of Nickel catalyst. The catalysts used were Ni-dolomite, Ni–MgO and Ni–Al2O3, all with 10% nickel loading. The hydrogen yield in the absence of a catalyst at a gasification temperature of 950 °C was 100.97 mmol g−1 of bagasse char. However, the presence of the Ni–MgO and Ni–Al2O3 catalysts produced significantly improved hydrogen yields of 178.75 and 187.25 mmol g−1 of bagasse char respectively at 950 °C. The hydrogen yield from the char with the Ni-dolomite only showed a modest increase in hydrogen yield. The influence of gasification temperature showed that the optimum temperature to obtain the highest hydrogen yield was 950 °C. Increase in gasification temperature from 750 to 950 °C significantly increased hydrogen yield from 45.30 to 187.25 mmol g−1 of bagasse char at 950 °C, but was followed by a decrease in yield at 1050 °C. The influence of steam flow rate showed that with the increase in steam flow rate from 6 to 15 ml h−1 hydrogen yield was increased from 187.25 to 208.41 mmol g−1 of bagasse char. Further increase in steam flow rate resulted in a decrease in hydrogen yield.
  • References (20)
    20 references, page 1 of 2

    [1] [2] [3] [4] [6] [7] [8] S. Kim and B.E. Dale, Global potential bioethanol production from wasted crops and crop residues. Biomass Bioenerg., 2004, 26, 361-375.

    A. Abuadala and I. Dincer, A review on biomass-based hydrogen production and potential applications. Int. J. Energ. Res. 2012, 36, 415-455.

    Y. Kalcini, A. Hepbasli and I. Dincer , Biomass-based hydrogen production: A review and analysis. Int. J. Hydrogen Energy, 2009, 34, 8799-8817.

    J.M. Encinar, J.M., J.F. Gonzalez, J.J. Rodriguez, M.J. Ramiro, Catalysed and uncatalysed steam gasification of eucalyptus char: influence of variables and kinetic study. Fuel, 2001, 80(14), 2025-2036.

    [5] F. Paviet, O. Bals, and G. Antonini, The effects of diffusional resistance on wood char gasification. Process Environ., 2008. 86(2), 131-140.

    M. Luo and B. Stanmore, The combustion characteristics of char from pulverized bagasse. Fuel, 1992, 71(9), 1074-1076.

    A. Moilanen, K. Saviharju, and T. Harju, Steam gasification reactivities of various fuel chars, in Advances in Thermochemical Biomass Conversion, A.V. Bridgwater, Editor., Springer Netherlands. p. 131-141, 1993.

    Technol., 2006, 97(16), 2065-2070.

    [9] H. Haykiri-Acma, S. Yaman, and S. Kucukbayrak, Gasification of biomass chars in steam nitrogen mixture. Energ. Convers. Manag., 2006. 47(7 8), 1004-1013.

    [10] S. Maiti, S. Dey, S. Purakayastha and B. Ghosh, Catalytic and noncatalytic mechanisms in steam gasification of char from the pyrolysis of biomass. Energ. Fuel., 2009, 24(1), 108-116.

  • Metrics
    0
    views in OpenAIRE
    0
    views in local repository
    68
    downloads in local repository

    The information is available from the following content providers:

    From Number Of Views Number Of Downloads
    White Rose Research Online - IRUS-UK 0 68
Share - Bookmark