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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F16%3APU118560" target="_blank" >RIV/00216305:26310/16:PU118560 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.scientific.net/MSF.851.141" target="_blank" >http://www.scientific.net/MSF.851.141</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/LO1211" target="_blank" >LO1211: Centrum materiálového výzkumu na FCH VUT v Brně - udržitelnost a rozvoj</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

6th Conference on Chemistry and Life, 2015

ISBN

978-80-214-5228-2

ISSN

0255-5476

e-ISSN

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Počet stran výsledku

6

Strana od-do

141-146

Název nakladatele

Trans Tech Publications Inc.

Místo vydání

Switzerland

Místo konání akce

Brno

Datum konání akce

2. 9. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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