Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Effects of pyrolysis temperature of the waste cattle bone char on the fluoride adsorption characteristics

소뼈의 소성 온도가 골탄의 불소흡착 특성에 미치는 영향

  • Kim, Junyoung (Department of Environmental Engineering, Chungnam National University) ;
  • Hwang, Jiyeon (Department of Environmental Engineering, Chungnam National University) ;
  • Choi, Younggyun (Department of Environmental Engineering, Chungnam National University) ;
  • Shin, Gwyam (Department of Environmental and Safety Engineering, Ajou University)
  • 김준영 (충남대학교 환경공학과) ;
  • 황지연 (충남대학교 환경공학과) ;
  • 최영균 (충남대학교 환경공학과) ;
  • 신귀암 (아주대학교 환경안전공학과)
  • Received : 2019.11.14
  • Accepted : 2020.01.15
  • Published : 2020.02.15
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Abstract

In this study, the physicochemical characteristics and fluoride adsorption capacity of the bone char pyrolyzed at different temperatures; 200℃, 300℃, 350℃, 400℃, 500℃, 600℃, and 700℃ were investigated. Analytical studies of the synthesized bone char including; SEM-EDS, XRD, BET and FT-IR, showed the presence of hydroxyapatite(HAP), which is the main substance that adsorbs fluoride from aqueous solutions containing high fluoride concentrations. Bone char pyrolyzed from 350~700℃ specifically revealed that, the lower the temperature, the higher the fluoride adsorption capacity and vice versa. The loss of the fluoride adsorption function of HAP (OH- band in the FTIR analysis) was interpreted as the main reason behind this inverse correlation between temperature and fluoride adsorption. Bone char produced at 350℃ hence exhibited a fluoride adsorption capacity of 10.56 mgF/g, resulting in significantly higher adsorption compared to previous studies.

Keywords

References

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