Assessment of magnesium potassium phosphate cement matrix for heavy metals immobilization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F24%3A00372990" target="_blank" >RIV/68407700:21110/24:00372990 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1063/5.0197852" target="_blank" >https://doi.org/10.1063/5.0197852</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0197852" target="_blank" >10.1063/5.0197852</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Assessment of magnesium potassium phosphate cement matrix for heavy metals immobilization

Popis výsledku v původním jazyce

Industrial wastes are often contaminated with heavy metals and thus constitute a danger to the environment. One of the safe ways to treat such contaminated wastes is to immobilize heavy metals by using various binders. Suitable binders may include magnesium potassium phosphate cement (MKPC), which is also referred to as a low-carbon material. This study evaluates the ability of the MKPC matrix to simultaneously immobilize three heavy metals, namely Ba, Pb and Zn ions. The heavy metals were applied to the mixing water in the form of soluble salts at a concentration of 2.5% of the heavy metal by weight of the binder. The basic structural and mechanical properties of the hardened specimens were determined and an evaluation of the parameters for the transport of liquid water was carried out. It was found that the presence of metals had a negative effect on the mechanical properties. However, the MKPC exhibited an excellent low water absorption coefficient, and the addition of heavy metals further reduced this parameter by up to 60%, promoting overall immobilization. This makes MKPC a very interesting material for immobilizing heavy metals in artificially contaminated materials, which could then be used in a variety of construction applications.

Název v anglickém jazyce

Assessment of magnesium potassium phosphate cement matrix for heavy metals immobilization

Popis výsledku anglicky

Industrial wastes are often contaminated with heavy metals and thus constitute a danger to the environment. One of the safe ways to treat such contaminated wastes is to immobilize heavy metals by using various binders. Suitable binders may include magnesium potassium phosphate cement (MKPC), which is also referred to as a low-carbon material. This study evaluates the ability of the MKPC matrix to simultaneously immobilize three heavy metals, namely Ba, Pb and Zn ions. The heavy metals were applied to the mixing water in the form of soluble salts at a concentration of 2.5% of the heavy metal by weight of the binder. The basic structural and mechanical properties of the hardened specimens were determined and an evaluation of the parameters for the transport of liquid water was carried out. It was found that the presence of metals had a negative effect on the mechanical properties. However, the MKPC exhibited an excellent low water absorption coefficient, and the addition of heavy metals further reduced this parameter by up to 60%, promoting overall immobilization. This makes MKPC a very interesting material for immobilizing heavy metals in artificially contaminated materials, which could then be used in a variety of construction applications.

Druh

D - Stať ve sborníku

CEP obor

—

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

"020006-1"-"020006-5"

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

—