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Simple fabrication of molecular sieving carbon for biogas upgrading via a temperature controlled carbonization of Phyllostachys pubescens

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  • Seo, Dong-June
  • Gou, Zhichao
  • Fujita, Hirotaka
  • Fujii, Takao
  • Sakoda, Akiyoshi

Abstract

In this study, molecular sieving carbons (MSCs) for biogas upgrading were successfully fabricated by a simple temperature controlled carbonization of moso bamboo (Phyllostachys pubescens) without energy consuming steps (i.e. char activation and pore modification). As the carbonization temperature increased from 600 to 900 °C, the specific surface area of bamboo charcoals increased and the pore size distribution of bamboo charcoal became narrower and closer to the dimensions of CH4 (0.38 nm). Bamboo charcoals had a more disordered carbon stacking structure than commercial MSC and contained more surface oxides, which contribute to greater surface reactivity than commercial activated carbon. Bamboo charcoal carbonized at 900 °C had the highest CO2 adsorption capacity (121.6 g kg−1), even higher than commercial MSC (102.88 g kg−1). Despite the poor kinetic CO2 adsorption properties of bamboo charcoals compared to commercial MSC, synthetic biogas (60% CH4 + 40% CO2) was successfully upgraded to concentrated CH4 (>90%) by small-scale pressure swing adsorption using bamboo charcoal. It is expected that bamboo charcoals can contribute to sustainable small-scale biogas upgrading.

Suggested Citation

  • Seo, Dong-June & Gou, Zhichao & Fujita, Hirotaka & Fujii, Takao & Sakoda, Akiyoshi, 2016. "Simple fabrication of molecular sieving carbon for biogas upgrading via a temperature controlled carbonization of Phyllostachys pubescens," Renewable Energy, Elsevier, vol. 86(C), pages 693-702.
    • Handle: RePEc:eee:renene:v:86:y:2016:i:c:p:693-702
    DOI: 10.1016/j.renene.2015.09.006
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    References listed on IDEAS

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    1. Mohamed, Abdul Rahman & Mohammadi, Maedeh & Darzi, Ghasem Najafpour, 2010. "Preparation of carbon molecular sieve from lignocellulosic biomass: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(6), pages 1591-1599, August.
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    Cited by:

    1. Shane, Agabu & Gheewala, Shabbir H. & Kafwembe, Young, 2017. "Urban commercial biogas power plant model for Zambian towns," Renewable Energy, Elsevier, vol. 103(C), pages 1-14.

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