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KOPLÍK, J. SMOLKOVÁ, M. TKACZ, J.
Originální název
The leachability of heavy metals from alkali-activated fly ash and blast furnace slag matrices
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
angličtina
Originální abstrakt
The ability of alkali-activated materials (AAMs) to fix and immobilize heavy metals was investigated. Two raw materials were used to prepare alkali-activated matrices – high-temperature fly ash and blast furnace slag (BFS). NaOH served as an alkaline activator. Two heavy metals (Mn, Ni) were added in various amounts into the matrices to find out the influence of dosage of heavy metal on the leachability and mechanical properties of the matrices. Leachability was measured as concentration of heavy metals in leachates (ČSN EN 12457-4) by inductively coupled plasma/optical emission spectrometry (ICP/OES). Structure of prepared matrices was characterized by scanning electron microscopy (SEM). Increasing of dosage of heavy metals added to the matrices led to decrease of mechanical properties. The leaching tests showed, that both matrices can immobilize Mn and Ni in dosages of added heavy metal 0.1 – 2,5%. Higher dosages caused deterioration of the matrices and increasing of leachability of fly ash matrices. After alkali activation both heavy metals were transformed into the form of insoluble salts.
Klíčová slova
Fly ash, Blast furnace slag, Alkaline activation, Leachability
Autoři
KOPLÍK, J.; SMOLKOVÁ, M.; TKACZ, J.
Vydáno
1. 4. 2016
Nakladatel
Trans Tech Publications Inc.
Místo
Switzerland
ISSN
0255-5476
Periodikum
Materials Science Forum
Ročník
851
Číslo
3
Stát
Švýcarská konfederace
Strany od
141
Strany do
146
Strany počet
6
URL
http://www.scientific.net/MSF.851.141
BibTex
@inproceedings{BUT123495, author="Jan {Koplík} and Miroslava {Smolková} and Jakub {Tkacz}", title="The leachability of heavy metals from alkali-activated fly ash and blast furnace slag matrices", booktitle="6th Conference on Chemistry and Life, 2015", year="2016", journal="Materials Science Forum", volume="851", number="3", pages="141--146", publisher="Trans Tech Publications Inc.", address="Switzerland", issn="0255-5476", url="http://www.scientific.net/MSF.851.141" }