Influence of Heavy Metals on the Properties of Coal Fly Ash- Portland Cement Composites
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F24%3A00372931" target="_blank" >RIV/68407700:21110/24:00372931 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1063/5.0197853" target="_blank" >https://doi.org/10.1063/5.0197853</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0197853" target="_blank" >10.1063/5.0197853</a>
Alternative languages
Result language
angličtina
Original language name
Influence of Heavy Metals on the Properties of Coal Fly Ash- Portland Cement Composites
Original language description
The increasing amount of toxic waste associated with growing urbanization is observed worldwide. The wastes generated in large quantities also include coal fly ash, municipal solid waste incineration ash, boiler slag, and bottom ash. In addition, these waste materials often contain heavy metals (HMs) like Pb, Zn, Cu, Cd, Cr, As, Ba and Mn, which are persistent, highly toxic and readily accumulate in various organisms. Waste containing HMs, if mishandled, can pose a serious threat to the environment, contaminating air, water and soil. A large part of the world's electricity production uses coal combustion, which takes place in classic coal-fired or thermal power stations. For the resulting coal fly ash (CFA), which is largely deposited in landfills, appropriate techniques should be found to both immobilize the present HMs and exploit its appropriate physico-chemical properties. This article is concerned with the study of the immobilization of As, Ba and Cu present in CFA. Composite building materials were produced from Portland cement (PC) to which CFA was added in amounts of 10% and 20% by weight of PC. The basic physical and mechanical parameters of the hardened samples were determined. The immobilization of As, Ba and Cu was investigated on the leachates from the prepared composites using atomic absorption spectroscopy (AAS). The experiments revealed that the concentrations of the investigated HMs in the leachates were very low, in the case of As even below the detection limit. The addition of CFA had a negative effect on the compressive strength, but it remains high enough for the use of designed composites in the construction industry.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20101 - Civil engineering
Result continuities
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)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
AIP Conference Proceedings
ISBN
978-0-7354-4873-5
ISSN
1551-7616
e-ISSN
1551-7616
Number of pages
5
Pages from-to
"020021-1"-"020021-5"
Publisher name
AIP Publishing
Place of publication
Melville, NY
Event location
Dalešice
Event date
Oct 3, 2023
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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