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DOI : , Vol.18, No.6, 97 ~ 104, 2010
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| Title |
| Acid Mine Drainage Treatment using Wasted Tiles and Sulfate Reducing Bacteria |
| 김홍태 Hong Tae Kim , 이태룡 Tae Ryong Lee , 이영도 Young Do Lee , 김광덕 Kwang Deok Kim , 조영탁 Young Tak Jo , 김영태 Young Tae Kim |
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| Abstract |
| The removal of heavy metals such as Fe, Mn, Zn, Pb, Cu, and Cr from the acid mine drainage (AMD) with wasted tiles and sulfate reducing bacteria (SRB) was investigated. NaHCO3 in phase 1 and the waste tiles in phase 2 were used to adjust pH of AMD to neutral and weak base in the first reactor and to remove some heavy metals, followed by anaerobic reactor containing SRB to additionally remove them. The HRT was 3 days in phase 1 and 2 days in phase 2. The pH adjustment in phase 1 and 2 was compared each other. The pH increased from 3 to 5 in phase 1 and 2, indicating the wasted tiles (phase 2) was as effective in pH increase as NaHCO3 (phase 1). The removal efficiencies of Fe, Mn, Zn, Pb, Cu and Cr in phase 1 were 80, 30, 60, 61, 44 and 40%, respectively, and 90, 40, 70, 80, 62 and 45% in phase 2, respectively, indicating higher removal efficiencies of heavy metals in phase 2 than those in phase 1. In addition, Fe, Mn, Cr and Cu are removed with higher efficiencies in pH 5~7 compared to those in pH 7~8, although some heavy metals were easily to be precipitated at higher pH. It indicates that the heavy metal removal by SRB might be dominant to the removal of the heavy metals at low pH. |
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