Comparison of biochar properties from biomass residues produced by slow pyrolysis at 500°C

Yongwoon Lee, Jinje Park, Changkook Ryu, Ki Seop Gang, Won Yang, Young Kwon Park, Jinho Jung, Seunghun Hyun

Research output: Contribution to journalArticlepeer-review

455 Citations (Scopus)


Application of biochar from biomass pyrolysis to soil is gaining greater interest; this can ameliorate the soil quality, reduce fertilizer consumption, and sequestrate carbon. This study compares the characteristics of biochar produced by slow pyrolysis at 500. °C for agricultural residues: sugarcane bagasse, cocopeat, paddy straw, palm kernel shell (PKS) and umbrella tree. In the biochar yield, the influence of the inert and lignin contents was significant. The wood stem, bagasse and paddy straw had biochar yields of 24-28. wt.% from the organic fraction while cocopeat had 46. wt.%. The carbon content of biochar ranged from 84. wt.% to 89. wt.%, which corresponded to 43-63% of carbon in the biomass. The biochar from wood stem and bagasse had well-developed pores of various sizes with large surface areas. Although the surface area was significant, PKS biochar had dense matrix with few large pores. The elemental composition and pH of biochars were also compared.

Original languageEnglish
Pages (from-to)196-201
Number of pages6
JournalBioresource technology
Publication statusPublished - 2013 Nov

Bibliographical note

Funding Information:
This work was performed with the financial support of the Cooperative Research Program for Agriculture Science & Technology Development (Project No. PJ0079662011 ), Rural Development Administration (RDA), Republic of Korea . The biomass samples were provided by the R&D program of the Korea Institute of Industrial Technology (Grant No. EO-13-0010 ).


  • Agricultural residues
  • Biochar
  • Biomass
  • Forestry residues
  • Slow pyrolysis

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal


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