Detail publikace

The leachability of heavy metals from alkali-activated fly ash and blast furnace slag matrices

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"
}