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논문 기본 정보

자료유형
학술대회자료
저자정보
저널정보
대한환경공학회 대한환경공학회 학술발표논문집 대한환경공학회 2005년도 춘계학술발표논문집
발행연도
2005.12
수록면
647 - 652 (6page)

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A highly efficient, versatile adsorbent, Nano-scale zero valent iron (NZVI) was synthesized and tested for the removal of aqueous phase arsenate, As(V), which is a highly toxic, mobile, and predominant arsenic species in oxidizing and aerobic groundwater. Batch experiments were performed to determine the feasibility of NZVI as an adsorbent for As(V) at neutral pH. The kinetics of As(V) sorption was found to be rapid and occurred on a scale of minutes. Initial As(V) concentration (1 mg/L) was almost completely adsorbed by 0.1 gL(-1) NZVI within 10 min. Laser light scattering (electrophoretic mobility measurement) confirmed NZVI-As (V) inner-sphere surface complexation. The sorption ability of NZVI was also monitored for 2 months to check for its long-term potential use as a colloidal reactive barrier material in deep groundwater treatment. We used SEM, BET surface area analyzer, and XRD to characterize particle size and morphology, specific surface area, and corrosion layers formed on pristine NZVI and As(V)-treated NZVI. Hydride Generator Atomic Absorption Spectrophotometer determined arsenic. The results confirmed that NZVI has great potential to be used in ex-situ as well as in-situ remediation as a colloidal reactive barrier material in lieu of pump and treat approaches.

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UCI(KEPA) : I410-ECN-0101-2017-539-001459939