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

The result's identifiers

  • Result code in 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>

  • Result on the web

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

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

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

  • Original language description

    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.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

    20101 - Civil engineering

Result continuities

  • Project

    <a href="/en/project/LO1211" target="_blank" >LO1211: Materials Research Centre at FCH BUT- Sustainability and Development</a><br>

  • Continuities

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

Others

  • Publication year

    2016

  • Confidentiality

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

Data specific for result type

  • Article name in the collection

    6th Conference on Chemistry and Life, 2015

  • ISBN

    978-80-214-5228-2

  • ISSN

    0255-5476

  • e-ISSN

  • Number of pages

    6

  • Pages from-to

    141-146

  • Publisher name

    Trans Tech Publications Inc.

  • Place of publication

    Switzerland

  • Event location

    Brno

  • Event date

    Sep 2, 2015

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article