Stability of iron in clays under different leaching conditions
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F14%3A00439270" target="_blank" >RIV/61388980:_____/14:00439270 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1346/CCMN.2014.0620207" target="_blank" >http://dx.doi.org/10.1346/CCMN.2014.0620207</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1346/CCMN.2014.0620207" target="_blank" >10.1346/CCMN.2014.0620207</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Stability of iron in clays under different leaching conditions
Popis výsledku v původním jazyce
The iron chemistry of aluminosilicates can markedly affect their adsorption properties due to possible changes in surface charge upon exposure to a variety of processes in the environment. One of these processes is chemical leaching, but to date little has been reported on the susceptibility of structural Fe to chemical leaching. The purpose of the current study was to determine the effects of solution pH on the stability of structural Fe in kaolinites, illite, and bentonite and the potential for formation of ancillary (oxyhydr)oxides. Structurally bound Fe does not participate in sorption properties but Fe that is released and phase transformed during leaching could take part in adsorption processes and form complexes and/or covalent bonds via Fe ions. Five different Fe-bearing clay minerals were treated in 0.5 M and 2 M HCl, distilled H2O, 0.1 M KCl, and 0.5 M KHCO3 for 24 h. The amount of Fe leached varied from 10 mu g g(-1) (for 0.1 M KCl) to 104 fig (for 2 M HCl) depending on the
Název v anglickém jazyce
Stability of iron in clays under different leaching conditions
Popis výsledku anglicky
The iron chemistry of aluminosilicates can markedly affect their adsorption properties due to possible changes in surface charge upon exposure to a variety of processes in the environment. One of these processes is chemical leaching, but to date little has been reported on the susceptibility of structural Fe to chemical leaching. The purpose of the current study was to determine the effects of solution pH on the stability of structural Fe in kaolinites, illite, and bentonite and the potential for formation of ancillary (oxyhydr)oxides. Structurally bound Fe does not participate in sorption properties but Fe that is released and phase transformed during leaching could take part in adsorption processes and form complexes and/or covalent bonds via Fe ions. Five different Fe-bearing clay minerals were treated in 0.5 M and 2 M HCl, distilled H2O, 0.1 M KCl, and 0.5 M KHCO3 for 24 h. The amount of Fe leached varied from 10 mu g g(-1) (for 0.1 M KCl) to 104 fig (for 2 M HCl) depending on the
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
DD - Geochemie
OECD FORD obor
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Návaznosti výsledku
Projekt
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Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2014
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Clays and Clay Minerals
ISSN
0009-8604
e-ISSN
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Svazek periodika
62
Číslo periodika v rámci svazku
1-2
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
8
Strana od-do
145-152
Kód UT WoS článku
000339858200016
EID výsledku v databázi Scopus
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