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Experimental in Situ Transformation of Pb Smelter Fly Ash in Acidic Soils
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SYSNO ASEP 0387567 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Experimental in Situ Transformation of Pb Smelter Fly Ash in Acidic Soils Author(s) Ettler, V. (CZ)
Mihaljevič, M. (CZ)
Šebek, O. (CZ)
Matys Grygar, Tomáš (UACH-T) RID, SAI, ORCID
Klementová, Mariana (UACH-T) RID, SAI, ORCIDSource Title Environmental Science & Technology. - : American Chemical Society - ISSN 0013-936X
Roč. 46, č. 19 (2012), s. 10539-10548Number of pages 10 s. Language eng - English Country US - United States Keywords pollution-control residues Subject RIV CA - Inorganic Chemistry CEZ AV0Z40320502 - UACH-T (2005-2011) UT WOS 000309431200023 DOI https://doi.org/10.1021/es301474v Annotation Soils in the vicinity of nonferrous metal smelters are often highly polluted by inorganic contaminants released from particulate emissions. We used a technique with double polyamide experimental bags (1-mu m mesh) to study the in situ transformation of fly ash (FA) from a secondary Pb smelter in acidic soil profiles. Between 62 and 66% of the FA dissolved after one year's exposure in the soils, leading to complete dissolution of primary caracolite (Na3Pb2(SO4)(3)Cl) and KPb2Cl5, with formation of secondary anglesite (PbSO4), minor PbSO3, and trace carbonates. Release of Pb was pH-dependent, whereas not for Cd and Zn. Significant amounts of metals (mainly Cd and Zn) partitioned into labile soil fractions. The field data agreed with laboratory pH-static leaching tests performed on FA, which was washed before the experiment to remove soluble salts. This indicates that appropriate laboratory leaching can accurately predict FA behavior in real-life scenarios (e.g., exposure in soil). Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2013
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