MgO-modified activated biochar for biojet fuels from pyrolysis of sawdust on a simple tandem micro-pyrolyzer

Hari Prasad Reddy Kannapu, Sumin Pyo, Su Shiung Lam, Jungho Jae, Gwang Hoon Rhee, Moonis Ali Khan, Byong Hun Jeon, Young Kwon Park

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

The aim of this work was to study on MgO-modified KOH activated biochar (AC) catalysts, in the pyrolysis of sawdust for the direct production of bio-jet fuels using a tandem micro-pyrolyzer. AC catalysts with various MgO contents (5 to 20 wt%) were synthesized using an impregnation method. The mesopores generated (4 to 18 nm) in the carbon has a great potential in the conversion of oxygenated to jet fuel. The importance of basic nature in the catalysts is demonstrated with the maximum bio-jet fuel yield of 29 % at 10 % MgO. Further, the temperature of 600 °C and a catalyst/sawdust ratio of 10 are identified as the optimal conditions. The nanosize of MgO and the synergism of acid and base sites seemed to enhance deoxygenation, via decarboxylation and decarbonylation, and oligomerization, which are required for jet fuel formation in high amounts from sawdust pyrolysis.

Original languageEnglish
Article number127500
JournalBioresource Technology
Volume359
DOIs
StatePublished - Sep 2022

Keywords

  • Bio-jet fuels
  • Biochar
  • MgO/AC
  • Pyrolysis
  • Rice husk
  • Sawdust

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