Počet záznamů: 1  

Removal of trace elements from landfill leachate by calcite precipitation

  1. 1.
    0039301 - UACH-T 2007 RIV NL eng J - Článek v odborném periodiku
    Ettler, V. - Zelená, O. - Mihaljevič, M. - Šebek, O. - Strnad, L. - Coufal, P. - Bezdička, Petr
    Removal of trace elements from landfill leachate by calcite precipitation.
    [Vyjmutí stopových prvků ze skládky odpadků výluhem vápencem.]
    Journal of geochemical exploration. Roč. 88, 1-3 (2006), s. 28-31. ISSN 0375-6742
    Grant CEP: GA AV ČR(CZ) KJB3111402
    Výzkumný záměr: CEZ:AV0Z40320502
    Klíčová slova: landfill leachate * calcite * scavenging
    Kód oboru RIV: CA - Anorganická chemie
    Impakt faktor: 0.922, rok: 2006

    Spontaneous precipitation of secondary calcite (CaCO3) has been observed in 25 samples of landfill leachate-polluted stream waters. During the 6-month precipitation experiment, the formation of calcite acts as a principal trace-element scavenging process. The concentrations of Fe, Sr, Ba and Mn and other trace elements in solution significantly decreased as calcite formed during the experiments. The chemical/mineralogical study (SEM/EDS, XRD, ICP MS) revealed that this newly formed calcite contains considerable amounts of metals and metalloids removed from solution. Such a geochemical process can be considered to be important for spontaneous decontamination in landfill-affected environments (stream sediments, soils) or landfill technical facilities (settling basins). This removal takes place especially during dry periods with low rain precipitation, when the landfill waters exhibit both higher alkalinity and higher trace element concentrations.

    Vyjmutí stopových prvků ze skládky odpadků výluhem vápencem.
    Trvalý link: http://hdl.handle.net/11104/0133427