• Evaluation of the Effects of Carbon Dioxide on the Production of Engineered Biochar
  • Lee Sangyoon1·Lee Taewoo1·Kwon E. Eilhann1*

  • 1Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea

  • 기능성 바이오차 생산을 위한 이산화탄소의 영향 평가
  • 이상윤1·이태우1·권일한1*

  • 1한양대학교 자원환경공학과

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


To abate the environmental burdens arising from CO2 emissions, biochar offers a strategic means to sequester carbons due to its recalcitrant nature. Also, biochar has a great potential for the use as carbon-based adsorbent because it is a porous material. As such, developing the surface properties of biochar increases a chance to produce biochar with great adsorption performance. Given that biochar is a byproduct in biomass pyrolysis, characteristics of biochar are contingent on pyrolysis operating parameters. In this respect, this work focused on the investigation of surface properties of biochar by controlling temperature and reaction medium in pyrolysis of pine sawdust as case study. In particular, CO2 was used as reaction medium in pyrolysis process. According to pyrolytic temperature, the surface properties of biochar were indeed developed by CO2. The biochar engineered by CO2 showed the improved capability on CO2 sorption. In addition, CO2 has an effect on energy recovery by enhancing syngas production. Thus, this study offers the functionality of CO2 for converting biomass into engineered biochar as carbon-based adsorbent for CO2 sorption while recovering energy as syngas.

Keywords: Biomass valorization, Pyrolysis, Carbon dioxide, Syngas, Engineered biochar

This Article

  • 2022; 27(2): 41-49

    Published on Apr 30, 2022

  • 10.7857/JSGE.2022.27.2.041
  • Received on Dec 2, 2021
  • Revised on Dec 6, 2021
  • Accepted on Dec 10, 2021

Correspondence to

  • Kwon E. Eilhann
  • Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea

  • E-mail: ek2148@hanyang.ac.kr