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°C hence exhibited a fluoride adsorption capacity of 10.56 mgF/g, resulting in significantly higher adsorption compared to previous studies.

ABSTRACT
1. 서 론
2. 재료 및 방법
    2.1 흡착제 제조
    2.2 등온흡착실험
    2.3 기기분석
3. 결과 및 고찰
    3.1 골탄의 물리･화학적 특성
    3.2 골탄의 FTIR분석결과
    3.3 골탄의 XRD분석 결과
    3.4 골탄의 불소흡착 특성
    3.5 불소의 등온흡착 특성
4. 결 론
References

• 김준영(충남대학교 환경공학과) | Junyoung Kim (Department of Environmental Engineering, Chungnam National University)
• 황지연(충남대학교 환경공학과) | Jiyeon Hwang (Department of Environmental Engineering, Chungnam National University)
• 최영균(충남대학교 환경공학과) | Younggyun Choi (Department of Environmental Engineering, Chungnam National University) Corresponding author
• 신귀암(아주대학교 환경안전공학과) | Gwyam Shin (Department of Environmental and Safety Engineering, Ajou University)