The advanced oxidation treatment using persulfate and zero-valent iron (ZVI) has been evaluated as a very effective technology for remediation of soil and groundwater contamination. However, the high rate of the initial reaction of persulfate with ZVI causes over-consumption of an injected persulfate, and the excessively generated active species show a low transfer rate to the target pollutant. In this study, ZVI was modified using selenium with very low reactivity in the water environment with the aim of controlling the persulfate activation rate by controlling the reactivity of ZVI. Selenium-modified ZVI (Se/ZVI) was confirmed to have a selenium coating on the surface through SEM/EDS analysis, and low reductive reactivity to trichlroethylene (TCE) was observed. As a result of inducing the persulfate activation using the synthesized Se/ZVI, the persulfated consumption rate was greatly reduced, and the decomposition rate of the model contaminant, anisole, was also reduced in proportion. However, the final decomposition efficiency was rather increased, which seems to be the result of preventing persulfate over-consumption. This is because the transfer efficiency of the active species (SO4-∙) of persulfate to the target contaminant has been improved. Selenium on the surface of Se/ZVI was not significantly dissolved even under oxidation conditions by persulfate, and most of it was present in the form of Se/ZVI. It was confirmed that the persulfate activation rate could be controlled by controlling the reactivity of ZVI, which could greatly contribute to the improvement of the persulfate oxidation efficiency.

Abstract
1. 서 론
2. 재료 및 방법
    2.1. 시약 및 재료
    2.2. Se/ZVI 합성방법
    2.3. 분석방법
    2.4. 회분식 실험방법
3. 결과 및 고찰
    3.1. Se/ZVI의 특성분석
    3.2. Se/ZVI의 과황산 활성화 특성
    3.3. 활성화제 소모 특성
    3.4. 셀레늄의 거동 특성
4. 결 론
감사의 글
REFERENCES

• 권희원(국립안동대학교 환경공학과) | Hee-won Kwon (Department of Environmental Engineering, Andong National University, Andong 36729, Korea)
• 박해성(국립안동대학교 환경공학과) | Hae-Seong Park (Department of Environmental Engineering, Andong National University, Andong 36729, Korea)
• 황인성(부산대학교 토목환경공학과) | In-seong Hwang (Department of Civil and Environmental Engineering, Pusan National University, Busan 46241, Korea)
• 김정진(국립안동대학교 지구환경과학과) | Jeong-Jin Kim (Department of Earth and Environmental Sciences, Andong National University, Andong 36729, Korea)
• 김영훈(국립안동대학교 환경공학과) | Young-Hun Kim (Department of Environmental Engineering, Andong National University, Andong 36729, Korea) Corresponding author