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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 79 - 84 (6page)
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초록· 키워드
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Applicability of bioleaching of Cu, Pb, and As from paddy soil in the vicinity of a refinery site was experimentally examined using a sulfur-oxidizing bacterium, Acidithiobacillus thiooxidans.As a result of aqua regia digestion, the concentrations of Cu (187 mg/kg), Pb (380 mg/kg), and As (107 mg/kg) in the studied soil exceeded the environmental criteria regulated by the Korean government. Batch experiments were performed to investigate the removal efficiency of the heavy metals according to various sulfur supply (0%, 0.1%, 0.5%, and 1%). All microbial experimental sets amended with sulfur showed the enhanced amount of heavy metals extracted, which showed the extraction processes require sulfur addition for proper metabolism of the bacterium. Among various amounts of sulfur addition, 1% (w/v) sulfur addition to the soil inoculated with bacterium led to the removal efficiencies of 67.6%, 25.8%, and 53.3% for Cu, Pb, and As, respectively. The relatively low removal efficiency of Pb resulted from formation of insoluble PbSO4 precipitate. As a result of sequential extraction for the treated soil, most metals were found to exist as a highly stable fraction which is recalcitrant against change of the surrounding environment.
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참고문헌 (18)
참고문헌 신청
Akcil, A. / 2004 / Potential bioleaching developments towards commercial reality: Turkish metal mining’s future / Minerals Engineering 17:477~480
Chen, S. Y. / 2010 / Optimization of operating parameters for the metal bioleaching process of contaminated soil / Separation and Purification Technology 71:178~185
Deng, X. / 2013 / Bioleaching mechanism of heavy metals in the mixture of contaminated soil and slag by using indigenous Penicillium chrysogenum strain F1 / Journal of Hazardous Material 248?249:107~114
Fu, B. / 2008 / Bioleaching of chalcopyrite by pure and mixed cultures of Acidithiobacillus spp. and Leptospirillum ferriphilum / International Biodeterioration and Biodegradation 62:109~115
한협조 / 2009 / 황산화균 Acidithiobacillus thiooxidans를 이용한 사격장 토양 내 중금속 용출 / 자원환경지질 42(5):457~469
Chen, S. Y. / 2010 / Optimization of operating parameters for the metal bioleaching process of contaminated soil / Separation and Purification Technology 71:178~185
Deng, X. / 2013 / Bioleaching mechanism of heavy metals in the mixture of contaminated soil and slag by using indigenous Penicillium chrysogenum strain F1 / Journal of Hazardous Material 248?249:107~114
Fu, B. / 2008 / Bioleaching of chalcopyrite by pure and mixed cultures of Acidithiobacillus spp. and Leptospirillum ferriphilum / International Biodeterioration and Biodegradation 62:109~115
한협조 / 2009 / 황산화균 Acidithiobacillus thiooxidans를 이용한 사격장 토양 내 중금속 용출 / 자원환경지질 42(5):457~469
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