This study evaluated the field-scale performance of an amorphous iron hydroxide (Fe(OH)3)-based desulfurizing agent for the removal of sulfur-based odorous compounds emitted from wastewater treatment facilities, including equalization tanks and sludge dewatering unit facilities. Hydrogen sulfide (H2S), methyl mercaptan (MM), dimethyl sulfide (DMS), and dimethyl disulfide (DMDS), which account for over 60~80% of total odor impact in such facilities, were targeted in this research. A drytype adsorption system packed with porous amorphous Fe(OH)3 was installed at a wastewater treatment plant and operated continuously for 45 days. Odorous gas concentrations were measured before and after treatment using portable analyzers and gas chromatography-pulsed flame photometric detector (GC-PFPD). The desulfurizing agent demonstrated a high H2S removal efficiency of over 99.9%, even under high inlet concentrations exceeding 500 ppm. Physicochemical analyses including XRD, XRF, EDS and BET confirmed that the material was amorphous, possessed a high surface area (243.4 m2/g), and exhibited a mesoporous structure favorable for gas adsorption. Hysteresis observed in nitrogen adsorption isotherms indicated a bottleneck-shaped pore structure, which enhances adsorption of odorous gases and removal efficiency. Notably, the system maintained stable performance under varying humidity without significant degradation.

Abstract
1. 서 론
2. 실험 방법
    2.1 실증 설비
    2.2 탈황제의 특성 분석
    2.3 악취성분 분석
3. 결과 및 고찰
    3.1 탈황제 특성
    3.2 실증실험 결과
4. 결 론
감사의 글
References

• 김신동((주)이앤켐솔루션 에너지·환경연구소) | Shin Dong Kim (Energy & Environment Research Center, E&Chem Solution Corp.) Corresponding author
• 정진욱((주)이앤켐솔루션 에너지·환경연구소) | Jinwook Chung (Energy & Environment Research Center, E&Chem Solution Corp.)
• 이종국(넥스트엔바이로) | Jongkuk Lee (Nextenviro Corp.)
• 김소연(서울과학기술대 환경공학과) | Soyeon Kim (Seoul National University of Science and Technology, Department of Environmental Engineering)