Chemical Upgrading of Biomass

DOI Web Site 1 Citations 30 References
  • Sharma Atul
    National Institute of Advanced Industrial Science & Technology, Global Zero Emission Research Center, Smart CO<sub>2</sub> Utilization Research Team
  • Uebo Kazuya
    Nippon Steel Corporation, R&D Laboratories, R&D Planning Division
  • Shishido Takahiro
    Kobe Steel Ltd, Mechanical Engineering Research Laboratory, Technical Development Group

Abstract

<p>In this study, a solvent based chemical upgrading process for coal was applied for chemical upgrading of biomass. Biomass was solvent treated at 320, 350, 380, 400, and 420°C, for 2 h with 1-methylnapthlene (1-MN) solvent. Upgraded biomass samples were obtained by removing 1-MN from the solvent treated samples using hexane washing approach. A part of 1-MN soluble fraction was also soluble in the hexane. n-Hexane soluble fraction obtained after the n-Hexane and the 1-MN recovery (solute) was combined to obtain upgraded biomass. H/C and O/C of the upgraded biomass (UB) samples were close to the values in the region of caking coals utilized in coke-making process suggesting chemical upgrading of the biomass. Solute fraction from the biomass was higher in comparison to that from the coal. The GCMS analysis showed the n-Hexane soluble may have compounds with boiling points lower than 1-MN. The carbon balance was lower than 100% may be because of the loss of the n-Hexane soluble biomass compounds with boiling points lower than 1-MN during the 1-MN separation process. Effect of addition of upgraded biomass to coal was investigated. Fracture strength and bulk density showed improvement due to the addition of upgraded biomass. Change in 1-MN solvent characteristics was investigated by recycling the used solvent. H/C, O/C and solute yields were nearly same for each recycle run.</p>

Journal

  • ISIJ International

    ISIJ International 63 (9), 1519-1525, 2023-09-15

    The Iron and Steel Institute of Japan

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