Gasification characteristics of biomass for tar removal by secondary oxidant injection

  • Se-Won Park
  • Jang-Soo Lee
  • Won-Seok Yang
  • Md Tanvir Alam
  • Yong-Chil Seo
  • Sang-Yeop Lee


Gasification experiments for sawdust were conducted using a fixed bed reactor at 900 °C by varying the secondary oxidant injection ratio to determine the optimal conditions for tar removal along with the enhancement of gasification efficiency. Secondary oxidant was injected as an oxidant at the top zone of the gasifier in varying ratios of 10–30% of the total amount of oxidant. This method was based on the primary method of tar removal and gasification efficiency improvement by thermal cracking of tar. Various gasification performance parameters were evaluated and tar content was estimated by measuring the fluctuation of weight of the activated carbon filter. The results showed that the concentration of tar in the producer gas decreased by injecting the secondary oxidant, even though syngas yield decreased. The recycling potential of the char produced in the gasification experiments was also assessed with the purpose of utilizing char as an adsorbent by determining its surface area and pore volume. The results demonstrated that the char produced from the gasification experiment had similar quality to that of the activated carbon used in this experiment.


Gasification Biomass Secondary oxidant Tar Thermal cracking 



This subject is supported by the Korea Ministry of Environment (MOE) as a “Waste-to-Energy Technology Development Project” and a grant from the Human Resources Development program (No. 20164030201250) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by the Korean Ministry of Trade, Industry and Energy.


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Copyright information

© Springer Japan KK 2017

Authors and Affiliations

  1. 1.Department of Environmental EngineeringYonsei UniversityWonjuSouth Korea

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