Heavy metals immobilization in coal combustion fly ash-portland cement composites

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F23%3A00374498" target="_blank" >RIV/68407700:21110/23:00374498 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.5593/sgem2023V/6.2/s26.69" target="_blank" >https://doi.org/10.5593/sgem2023V/6.2/s26.69</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2023V/6.2/s26.69" target="_blank" >10.5593/sgem2023V/6.2/s26.69</a>

Result language

angličtina

Original language name

Heavy metals immobilization in coal combustion fly ash-portland cement composites

Original language description

In this study, the immobilization of As, Ba and Cu contained in fly ash from coal combustion was experimentally investigated. Fly ash was used to replace 10 wt.% and 20 wt.% of Portland cement (PC) and 0-2 mm silica sand was used as an aggregate. The evaluation of the basic physical and mechanical properties was carried out. Special attention was paid to the evaluation of the immobilization of the studied heavy metals in the prepared composites; the leaching test was performed with a liquid/solid ratio of 10 L/kg. The concentration of As, Ba and Cu in the leachates was analysed by atomic absorption spectroscopy (AAS). The results showed that the concentrations of the studied heavy metals in the leachates of the prepared composites were very low, which suggests that they were completely immobilized in the matrices. The mechanical resistance of the prepared mortars was slightly reduced by PC substitution by FA, but from the quantitative point of view it remained high enough for practical use of prepared composites in development of "green" building materials.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project

<a href="/en/project/GA23-04744S" target="_blank" >GA23-04744S: Research of heavy metals immobilization in alternative low-carbon composites</a><br>

Continuities

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

Publication year

2023

Confidentiality

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

Article name in the collection

Proceedings of 23rd International Multidisciplinary Scientific GeoConference SGEM 2023,volume 23, issue 6.2

ISBN

978-619-7603-66-8

ISSN

1314-2704

e-ISSN

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Number of pages

7

Pages from-to

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Publisher name

STEF92 Technology Ltd.

Place of publication

Sofia

Event location

Vídeň

Event date

Nov 28, 2023

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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