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Removal of trace elements from landfill leachate by calcite precipitation

SYSNO ASEP	0039301
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Ostatní články
Title	Removal of trace elements from landfill leachate by calcite precipitation
Title	Vyjmutí stopových prvků ze skládky odpadků výluhem vápencem
Author(s)	Ettler, V. (CZ) Zelená, O. (CZ) Mihaljevič, M. (CZ) Šebek, O. (CZ) Strnad, L. (CZ) Coufal, P. (CZ) Bezdička, Petr (UACH-T)_{SAI, RID, ORCID}
Source Title	Journal of Geochemical Exploration. - : Elsevier - ISSN 0375-6742 Roč. 88, 1-3 (2006), s. 28-31
Number of pages	4 s.
Language	eng - English
Country	NL - Netherlands
Keywords	landfill leachate ; calcite ; scavenging
Subject RIV	CA - Inorganic Chemistry
R&D Projects	KJB3111402 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z40320502 - UACH-T (2005-2011)
Annotation	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.
Workplace	Institute of Inorganic Chemistry
Contact	Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931
Year of Publishing	2007

Number of the records: 1