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NTIS 바로가기한국농공학회논문집 = Journal of the Korean Society of Agricultural Engineers, v.58 no.3, 2016년, pp.39 - 46
강구 (Graduate School of Future Convergence Technology, Hankyong National University) , 박성직 (Department of Bioresources and Rural systems Engineering, Hankyong National University) , 홍성구 (Department of Bioresources and Rural systems Engineering, Hankyong National University)
This study investigated the potential use and the effectiveness of biomass ashes for the stabilization of heavy metals in soil through a series of experiments. The ashes used for the experiments were obtained from the gasification of biomass including miscanthus and woodchips. The amounts of nickel ...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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중금속 중 유해금속은 무엇인가? | 중금속은 인체에 매우 유독한 물질로 극히 미량일지라도 인체의 기능을 저해할 수 있는 유해금속 (Cd, As, Hg, Pb, Cr, Ni)과 발암성·돌연변이 등 유전자에 영향을 미치는 유전독성 금속 (Cd, Co, Cr, Mn, Ni)으로 분류할 수 있다 (WHO, 1992; WHO, 1995; Go et al., 2012). | |
안정화 공법의 장점은? | 최근 중금속 오염 농경지의 복원으로 안정화 (stabilization) 공법이 매우 유용한 공법으로 인식되고 있다. 안정화 공법은 오염물질이 토양으로부터 직접적으로 제거되지는 않지만, 원위치 (in situ)에서 적용이 가능하며, 오염토양에 중금속 안정화 물질을 적용시켜 토양 내에 존재하는 중금속을 흡착 (adsorption), 침전 (precipitation) 등을 통해 용해도 (solubility)나 독성이 낮은 형태로 변화시켜 생물유효도 (bioavailability) 및 추출도 (extractablity)를 낮춰 잠재적 위해성을 감소시키는 방법으로 광범위하게 분포된 저농도의 중금속 오염토양을 처리하는데 기술적 및 비용적인 장점을 가지고 있다 (Basta and McGowen, 2004). | |
퇴비 활용에 의하여 농경지 토양의 경우 크롬의 오염정도가 산림에 비하여 얼마나 높은가? | , 2012). 특히 농경지 토양의 경우 유 무기 비료의 사용 및 집적에 기인하여 가용성 크롬의 오염정도가 산림토양 (0.09 mg/kg)의 약 4배를 초과하는 0.39 mg/kg으로 조사되었고, 니켈의 경우도 비소, 납, 아연 등과 같은 중금속과는 달리 지속적인 돈분액비의 사용에 의해 집적되어 매년 농도가 증가되는 결과를 나타내어 꾸준한 관리와 주위가 필요하다 (Kim et al., 2010; Go et al. |
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