Immobilization of Cd, Zn, and Pb from Soil Treated by Limestone with Variation of pH Using a Column Test
Decades of mining in South Korea have resulted in the contamination of large amounts of soil by metals. The most feasible approach to site restoration requires the use of a stabilization agent to reduce metal mobility. This study examined the leaching characteristics of limestone used as a stabiliza...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2015/641415 |
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| author | Sung-Wook Yun Chan Yu |
| author_facet | Sung-Wook Yun Chan Yu |
| author_sort | Sung-Wook Yun |
| collection | DOAJ |
| description | Decades of mining in South Korea have resulted in the contamination of large amounts of soil by metals. The most feasible approach to site restoration requires the use of a stabilization agent to reduce metal mobility. This study examined the leaching characteristics of limestone used as a stabilization agent when subjected to solutions of differing pH. In a laboratory-scale column test, solutions with pH values of 3.5, 4.6, and 5.6, representing acidic to nonacidic rainfall, were applied to soil mixed with limestone. Test results indicate that metal components can be released with the addition of acidic solutions, even if the soil is highly alkaline. Cd and Zn, in particular, exhibited abrupt or continuous leaching when exposed to acid solutions, indicating the potential for contamination of water systems as metal-laden soils are exposed to the slightly acidic rainfall typical of South Korea. Treatment using stabilization agents such as limestone may reduce leaching of metals from the contaminated soil. Stabilizing metal-contaminated farmland is an economical and feasible way to reduce pollutants around abandoned metal mines. |
| format | Article |
| id | doaj-art-92e4ef14e73448dc8bc31ff68e396f95 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-92e4ef14e73448dc8bc31ff68e396f952025-02-03T06:13:50ZengWileyJournal of Chemistry2090-90632090-90712015-01-01201510.1155/2015/641415641415Immobilization of Cd, Zn, and Pb from Soil Treated by Limestone with Variation of pH Using a Column TestSung-Wook Yun0Chan Yu1Institute of Agriculture & Life Science, Gyeongsang National University, 900 Gazwa, Jinju, Gyeongnam 660-701, Republic of KoreaInstitute of Agriculture & Life Science, Gyeongsang National University, 900 Gazwa, Jinju, Gyeongnam 660-701, Republic of KoreaDecades of mining in South Korea have resulted in the contamination of large amounts of soil by metals. The most feasible approach to site restoration requires the use of a stabilization agent to reduce metal mobility. This study examined the leaching characteristics of limestone used as a stabilization agent when subjected to solutions of differing pH. In a laboratory-scale column test, solutions with pH values of 3.5, 4.6, and 5.6, representing acidic to nonacidic rainfall, were applied to soil mixed with limestone. Test results indicate that metal components can be released with the addition of acidic solutions, even if the soil is highly alkaline. Cd and Zn, in particular, exhibited abrupt or continuous leaching when exposed to acid solutions, indicating the potential for contamination of water systems as metal-laden soils are exposed to the slightly acidic rainfall typical of South Korea. Treatment using stabilization agents such as limestone may reduce leaching of metals from the contaminated soil. Stabilizing metal-contaminated farmland is an economical and feasible way to reduce pollutants around abandoned metal mines.http://dx.doi.org/10.1155/2015/641415 |
| spellingShingle | Sung-Wook Yun Chan Yu Immobilization of Cd, Zn, and Pb from Soil Treated by Limestone with Variation of pH Using a Column Test Journal of Chemistry |
| title | Immobilization of Cd, Zn, and Pb from Soil Treated by Limestone with Variation of pH Using a Column Test |
| title_full | Immobilization of Cd, Zn, and Pb from Soil Treated by Limestone with Variation of pH Using a Column Test |
| title_fullStr | Immobilization of Cd, Zn, and Pb from Soil Treated by Limestone with Variation of pH Using a Column Test |
| title_full_unstemmed | Immobilization of Cd, Zn, and Pb from Soil Treated by Limestone with Variation of pH Using a Column Test |
| title_short | Immobilization of Cd, Zn, and Pb from Soil Treated by Limestone with Variation of pH Using a Column Test |
| title_sort | immobilization of cd zn and pb from soil treated by limestone with variation of ph using a column test |
| url | http://dx.doi.org/10.1155/2015/641415 |
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