New & Renewable Energy (신재생에너지)

Korean Society for New and Renewable Energy (한국신·재생에너지학회)
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Application of the Microbial Process for Hydrogen Sulfide Removal and Bio-Sulfur Production from Landfill Gas

미생물 공법에 의한 매립가스 황화수소 제거 및 바이오황 생산

  • Khim, Young-Min (Graduate School of Energy and Environment, Seoul National University of Science and Technology) ;
  • Song, Hyo-Soon (ECOBio Holdings Co., Ltd.) ;
  • Ahn, Hyoseong (ECOBio Holdings Co., Ltd.) ;
  • Chun, Seung-Kyu (Graduate School of Energy and Environment, Seoul National University of Science and Technology)
  • Received : 2020.01.13
  • Accepted : 2020.02.18
  • Published : 2020.03.25
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Abstract

Operational testing of the THIOPAQ® facility that removes H2S from landfill gas was performed for 746 days. The average H2S removal efficiency was 99.4%, and the input quantities of air, NaOH, and nutrients per sulfur load were 13.1 ㎥/ton, 1.5 ㎥/ton, and 28.7 L/ton, respectively. The purity of the bio-sulfur produced from the facility was 94.8%, with 3.3% impurities, except for moisture. X-ray photoelectron spectroscopy showed that the compositional contents of amino acids and free amino acids of the bio-sulfur surface were 5,308 and 728 mg/kg, respectively. The mean particle size was 3.41 ㎛, which was much smaller than that of chemical sulfur. Based on these results, a high H2S removal rate of more than 97% is feasible, and high value-added bio-sulfur, which is used as a fungicide because of its hydrophilic characteristics and small size, can be obtained at this facility.

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References

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