Characteristics of biochar produced from slow pyrolysis of Geodae-Uksae 1

Yongwoon Lee, Pu Reun Byul Eum, Changkook Ryu, Young Kwon Park, Jin Ho Jung, Seunghun Hyun

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148 Scopus citations


This study investigated producing biochar from Geodae-Uksae 1 for soil applications to sequestrate carbon from the atmosphere and improve the productivity of crops. Using a lab-scale packed bed reactor, pyrolysis products of Geodae-Uksae 1 were produced over a temperature range of 300-700°C with a heating rate of 10°C/min. Pyrolysis at 500°C was found appropriate for biochar production considering the properties of char and the amount of heat required. It yielded biochar of 27.2wt.% that contained approximately 48% carbon in the raw biomass. The surface area of the biochar rapidly increased to 181m2/g. Large cylindrical pores with diameters of 5-40μm developed within the biochar due to the vascular cell structure of the parent biomass. The byproducts (bio-oil and gases) were also analyzed for use as fuel.

Original languageEnglish
Pages (from-to)345-350
Number of pages6
JournalBioresource Technology
StatePublished - Feb 2013


  • Biochar
  • Biomass
  • Geodae-Uksae 1
  • Miscanthus
  • Slow pyrolysis


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