Influence of Heavy Metals on the Properties of Coal Fly Ash- Portland Cement Composites

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of Heavy Metals on the Properties of Coal Fly Ash- Portland Cement Composites

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Influence of Heavy Metals on the Properties of Coal Fly Ash- Portland Cement Composites

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA23-04744S" target="_blank" >GA23-04744S: Výzkum imobilizace těžkých kovů v alternativních nízkouhlíkových kompozitech</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

AIP Conference Proceedings

ISBN

978-0-7354-4873-5

ISSN

1551-7616

e-ISSN

1551-7616

Počet stran výsledku

5

Strana od-do

"020021-1"-"020021-5"

Název nakladatele

AIP Publishing

Místo vydání

Melville, NY

Místo konání akce

Dalešice

Datum konání akce

3. 10. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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