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Statements

Subject Item
n2:RIV%2F61388980%3A_____%2F06%3A00038850%21RIV07-GA0-61388980
rdf:type
skos:Concept n15:Vysledek
dcterms:description
Iron humate produced as a waste by-product during an industrial manufacture of humic substances from low-rank brown coals was tested as a sorbent for the removal of metal cations -Cd (II), Cu (II), Co (II), Ni (II), Zn (II), Tl (I), Eu (III), Cr (III)-as well as hexavalent chromium from waters. The Langmuir-type isotherms were used to describe the metal sorption; the respective equations may be derived and interpreted on the basis of a concept of surface-complexation reactions. Parameters of the sorption isotherms were estimated from experimental dependencies measured in a batch arrangement. The sorption capacities ranged from 0.024 mmol g(-1) for Co (II) to 0.324 mmol g(-1) for Tl (I). The metal uptake was affected by the presence of complexing agents (EDTA, salicylate, citrate), but this effect depends strongly on pH and the kind of complexing agent. Bylo zjištěno, že humáty železa jsou vhodným sorbentem pro odstraňování iontů Cd (II), Cu (II), Co (II), Ni (II), Zn (II), Tl (I), Eu (III), Cr (III) z vod. Sorbce se mění přídavky EDTA, citrátů, salicylátů, dodecylsulfátů. Iron humate produced as a waste by-product during an industrial manufacture of humic substances from low-rank brown coals was tested as a sorbent for the removal of metal cations -Cd (II), Cu (II), Co (II), Ni (II), Zn (II), Tl (I), Eu (III), Cr (III)-as well as hexavalent chromium from waters. The Langmuir-type isotherms were used to describe the metal sorption; the respective equations may be derived and interpreted on the basis of a concept of surface-complexation reactions. Parameters of the sorption isotherms were estimated from experimental dependencies measured in a batch arrangement. The sorption capacities ranged from 0.024 mmol g(-1) for Co (II) to 0.324 mmol g(-1) for Tl (I). The metal uptake was affected by the presence of complexing agents (EDTA, salicylate, citrate), but this effect depends strongly on pH and the kind of complexing agent.
dcterms:title
Iron humate as a low-cost sorbent for metal ions Iron humate as a low-cost sorbent for metal ions Humáty železa jako levné sorbenty kovových iontů
skos:prefLabel
Humáty železa jako levné sorbenty kovových iontů Iron humate as a low-cost sorbent for metal ions Iron humate as a low-cost sorbent for metal ions
skos:notation
RIV/61388980:_____/06:00038850!RIV07-GA0-61388980
n3:strany
169;181
n3:aktivita
n14:P n14:Z
n3:aktivity
P(GA203/03/0922), Z(AV0Z40320502)
n3:cisloPeriodika
2
n3:dodaniDat
n8:2007
n3:domaciTvurceVysledku
n11:8679827
n3:druhVysledku
n10:J
n3:duvernostUdaju
n7:S
n3:entitaPredkladatele
n4:predkladatel
n3:idSjednocenehoVysledku
480446
n3:idVysledku
RIV/61388980:_____/06:00038850
n3:jazykVysledku
n16:eng
n3:klicovaSlova
heavy metals; sorption; humic substances
n3:klicoveSlovo
n13:humic%20substances n13:sorption n13:heavy%20metals
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[69CB61FA17DA]
n3:nazevZdroje
Environmental Technology
n3:obor
n12:CA
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
6
n3:projekt
n18:GA203%2F03%2F0922
n3:rokUplatneniVysledku
n8:2006
n3:svazekPeriodika
27
n3:tvurceVysledku
Grötschelová, S. Stopka, Pavel Staňková, P. Fedorovič, J. Janoš, P. Rejnek, J.
n3:zamer
n17:AV0Z40320502
s:issn
0959-3330
s:numberOfPages
13