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Statements

Subject Item
n2:RIV%2F61388980%3A_____%2F12%3A00380006%21RIV13-AV0-61388980
rdf:type
n10:Vysledek skos:Concept
dcterms:description
Leachates collected at two (active and closed) municipal solid waste (MSW) landfills were examined for colloids and particles by transmission electron microscopy, energy dispersive spectrometry, selected area electron diffraction and for the chemical compositions of the filtrates after the filtration to 0.1 mu m and ultrafiltration to 1 kDa (similar to 1 nm). Six groups of colloids/particles in the range 5 nm to 5 mm were determined (in decreasing order of abundance): carbonates, phyllosilicates (clay minerals and micas), quartz, Fe-oxides, organics and others (salts, phosphates). Inorganic colloids/particles in leachates from the active landfill predominantly consist of calcite (CaCO3) and minor clay minerals and quartz (SiO2). The colloids/particles in the leachates from the closed landfill consist of all the observed groups with dominant phyllosilicates. Whereas calcite, Fe-oxides and phosphates can precipitate directly from the leachates, phyllosilicates and quartz are more probably either derived from the waste or formed by erosion of the geological environment of the landfill. Low amounts of organic colloids/particles were observed, indicating the predominance of organic molecules in the 'truly dissolved' fraction (fulvic compounds). Especially newly formed calcite colloids forming particles of 500 nm and stacking in larger aggregates can bind trace inorganic contaminants (metals/metalloids) and immobilize them in landfill environments. Leachates collected at two (active and closed) municipal solid waste (MSW) landfills were examined for colloids and particles by transmission electron microscopy, energy dispersive spectrometry, selected area electron diffraction and for the chemical compositions of the filtrates after the filtration to 0.1 mu m and ultrafiltration to 1 kDa (similar to 1 nm). Six groups of colloids/particles in the range 5 nm to 5 mm were determined (in decreasing order of abundance): carbonates, phyllosilicates (clay minerals and micas), quartz, Fe-oxides, organics and others (salts, phosphates). Inorganic colloids/particles in leachates from the active landfill predominantly consist of calcite (CaCO3) and minor clay minerals and quartz (SiO2). The colloids/particles in the leachates from the closed landfill consist of all the observed groups with dominant phyllosilicates. Whereas calcite, Fe-oxides and phosphates can precipitate directly from the leachates, phyllosilicates and quartz are more probably either derived from the waste or formed by erosion of the geological environment of the landfill. Low amounts of organic colloids/particles were observed, indicating the predominance of organic molecules in the 'truly dissolved' fraction (fulvic compounds). Especially newly formed calcite colloids forming particles of 500 nm and stacking in larger aggregates can bind trace inorganic contaminants (metals/metalloids) and immobilize them in landfill environments.
dcterms:title
Transmission electron microscopy investigation of colloids and particles from landfill leachates Transmission electron microscopy investigation of colloids and particles from landfill leachates
skos:prefLabel
Transmission electron microscopy investigation of colloids and particles from landfill leachates Transmission electron microscopy investigation of colloids and particles from landfill leachates
skos:notation
RIV/61388980:_____/12:00380006!RIV13-AV0-61388980
n10:predkladatel
n11:ico%3A61388980
n3:aktivita
n4:I n4:Z n4:S
n3:aktivity
I, S, Z(AV0Z40320502), Z(MSM0021620855)
n3:cisloPeriodika
5
n3:dodaniDat
n12:2013
n3:domaciTvurceVysledku
n7:1374710
n3:druhVysledku
n5:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
174947
n3:idVysledku
RIV/61388980:_____/12:00380006
n3:jazykVysledku
n13:eng
n3:klicovaSlova
colloids; landfill leachates; transmission electron microscopy; calcite; contaminant mobility
n3:klicoveSlovo
n6:landfill%20leachates n6:contaminant%20mobility n6:calcite n6:transmission%20electron%20microscopy n6:colloids
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[9690998BAF70]
n3:nazevZdroje
Waste Management & Research
n3:obor
n16:CA
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n12:2012
n3:svazekPeriodika
30
n3:tvurceVysledku
Ettler, V. Klementová, Mariana Matura, M.
n3:wos
000304720000011
n3:zamer
n8:AV0Z40320502 n8:MSM0021620855
s:issn
0734-242X
s:numberOfPages
12
n19:doi
10.1177/0734242X11408382