Počet záznamů: 1  

Experimental in Situ Transformation of Pb Smelter Fly Ash in Acidic Soils

  1. 1.
    0387567 - ÚACH 2013 RIV US eng J - Článek v odborném periodiku
    Ettler, V. - Mihaljevič, M. - Šebek, O. - Matys Grygar, Tomáš - Klementová, Mariana
    Experimental in Situ Transformation of Pb Smelter Fly Ash in Acidic Soils.
    Environmental Science and Technology. Roč. 46, č. 19 (2012), s. 10539-10548. ISSN 0013-936X. E-ISSN 1520-5851
    Výzkumný záměr: CEZ:AV0Z40320502
    Klíčová slova: pollution-control residues
    Kód oboru RIV: CA - Anorganická chemie
    Impakt faktor: 5.257, rok: 2012

    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).
    Trvalý link: http://hdl.handle.net/11104/0216632

     
     
Počet záznamů: 1  

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