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Biofuels pp 69-84 | Cite as

Hydrothermal Liquefaction of Lignocellulosic Biomass Components: Effect of Alkaline Catalyst

  • Rawel Singh
  • Bhavya B. Krishna
  • Thallada BhaskarEmail author
Chapter
Part of the Green Energy and Technology book series (GREEN)

Abstract

The fundamental studies to understand the role of individual biomass components (cellulose and lignin) on the production of valuable hydrocarbons during hydrothermal liquefaction (HTL) is presented. Thermal and catalytic HTL of cellulose and lignin was performed at 280 °C under biomass:H2O ratio of 1:6 at 15 min residence time. The use of alkaline catalysts significantly increased both bio-oil yield and conversion for cellulose as well as lignin. Maximum bio-oil yield (28%) and conversion (90%) in case of cellulose was observed with KOH. Similarly in case of lignin maximum bio-oil yield (17 wt%) as well as conversion (72%) was observed with KOH. From the analysis of bio-oil and bio-residue, it was observed both cellulose and lignin have undergone hydrolytic cleavage during HTL to form low molecular weight liquid products. The FTIR and NMR (1H and 13C) of the bio-oil obtained from lignin indicated the presence of phenols and aromatic ethers.

Keywords

Cellulose Lignin Lignocellulosic biomass Hydrothermal liquefaction Subcritical water 

Notes

Acknowledgements

The authors thank the Director, CSIR-Indian Institute of Petroleum, Dehradun, for his constant encouragement and support. The authors thank CSIR in the form of XII Five Year Plan project (CSC0116/BioEn) for providing financial support. The authors thank the Analytical Science Division (ASD) of CSIR-IIP for product characterization.

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Copyright information

© Springer Nature Singapore Pte Ltd. 2017

Authors and Affiliations

  • Rawel Singh
    • 1
  • Bhavya B. Krishna
    • 2
  • Thallada Bhaskar
    • 2
    Email author
  1. 1.A. S. CollegeKhannaIndia
  2. 2.Thermo-Catalytic Processes AreaBio-Fuels Division (BFD), CSIR-Indian Institute of Petroleum (IIP)DehradunIndia

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