논문 상세보기
pp.492-498
This study focused on the evaluation of stability of mercury compounds in byproducts from industrial facilities. Stability testing was conducted using a 5-step sequential extraction procedure using six kinds of byproducts. The mercury compounds extracted were categorized as ion-exchangeable (F1), acid soluble (F2), organic matter-bound (F3), strong complex (F4), and residual (F5) mercury compounds. The amount of mercury in each step was calculated and compared with total mercury amount; a 51% to 92% recovery rate was estimated. Hg-extracted F1, F2, and F3 were easily released into environment. It is necessary to apply an appropriate method to handle byproducts that contain these portions of mercury. On the other hand, mercury in F4 and F5 fraction is relatively more stable. F4 fraction means strong complex and elemental mercury. Byproduct from metal production facility has a higher elemental mercury fraction. It was found that 89% and 65% of mercury were contained in F4 fractions from fly ash and sludge, respectively. The goal of this study is to investigate stability of Hg compounds in different byproducts to suggest appropriate treatment methods for each byproduct on its Hg compound characteristics.
II. 실험 장치 및 방법
1. 시료 채취
2. 산업시설 부산물의 수은농도 분석
3. 단계별 용출시험
III. 결과 및 토의
1. 부산물의 수은 농도 분석 결과
2. 단계별 용출액의 수은 화합물 분석 결과
3. 부산물내 수은 화합물의 안정도 평가
IV. 결 론
사 사
References
