| 인산염 마그네시아 시멘트에 의한 중금속 이온 고정화 |
| 최훈, 강현주, 송명신, 정의담1, 김주성2 |
강원대학교 삼척캠퍼스 화학공학연구소
1충북대학교 도시공학과
2강원대학교 삼척캠퍼스 방재기술 대학원 |
| Solidification of Heavy Metal Ions Using Magnesia-phosphate Cement |
| Hun Choi, Hyun-Ju Kang, Myung-Shin Song, Eui-Dam Jung1, Ju-Seng Kim2 |
Research Institute and Department of Chemical Engineering Construction Material Laboratory, Kangwon National University
1Department of Orban Planning, Chungbuk University
2Professional Graduation School of Disaster Prevention, Kangwon National University |
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| ABSTRACT |
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Since 1980's, many mines have been closed and abandoned due to the exhaustion of deposits and declining prices of international mineral resources. Because of the lack of post management for these abandoned mines, Farm land and rivers were contaminated with heavy metal ions and sludge. We studied on the solidification/stabilization of heavy metal ions, chromium ions and lead ions, using magnesia-phosphate cement. Magnesia binders were used calcined-magnesia and dead-burned magnesia. Test specimens were prepared by mixing magnesia binder with chromium ions and lead ions and activators. We analyzed the hydrates by reaction between magnesiaphosphate cement and each heavy metal ions by XRD and SEM-EDAX, and analyzed the content of heavy metal ions in the eruption water from the specimens for the solidification and stabilization of heavy metal ions by ICP. The results was shown that calcined magnesia binder is effective in stabilization for chromium ions and dead-burned magnesia binder is effective in stabilization for lead ions. |
| Key words:
Phosphate magnesia cement, Heavy metal, Solidification, Contamination, Stabilization |
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