인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
개인구독
소속 기관이 없으신 경우, 개인 정기구독을 하시면 저렴하게
논문을 무제한 열람 이용할 수 있어요.
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Coal gangue can potentially release varying amounts of heavy metals under conditions such as soaking and leaching, posing a threat to ecological and environmental safety. This has become a research hotspot in recent years. Therefore, this study mainly focused on coal gangue and its composites, and studied the leaching behavior of typical heavy metals under different initial p H conditions and the potential ecological risk of leaching solution and its effect on alfalfa seed germination. The results show that the coal gangue has irregular block and flake structure, and the surface is rough, and its chemical composition mainly includes SiO 2 and Al 2 O 3 . The leachates from both coal gangue and composite materials were alkaline, with relatively similar pH values. This is attributed to the leaching of alkaline compounds such as CaO and Fe 2 O 3 . As the initial pH decreased, the leaching amounts of Pb, Cr, Cd, and Hg increased, while the leaching amount of As decreased. In the leachate from coal gangue, the single-factor pollution index and Nemerow pollution index for Pb were 0.53 and 0.54, respectively. The composite materials demonstrated a good stabilization effect on heavy metals. These findings can provide a reference for the safe disposal of coal gangue in mining areas.
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오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.