Simultaneous Immobilization of Heavy Metals in MKPC-Based Mortar—Experimental Assessment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43927623" target="_blank" >RIV/60461373:22310/23:43927623 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21110/23:00369834

Result on the web

<a href="https://www.mdpi.com/1996-1944/16/24/7525" target="_blank" >https://www.mdpi.com/1996-1944/16/24/7525</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma16247525" target="_blank" >10.3390/ma16247525</a>

Result language

angličtina

Original language name

Simultaneous Immobilization of Heavy Metals in MKPC-Based Mortar—Experimental Assessment

Original language description

Heavy metal contamination, associated with the increase in industrial production and the development of the population in general, poses a significant risk in terms of the contamination of soil, water, and, consequently, industrial plants and human health. The presence of ecotoxic heavy metals (HMs) thus significantly limits the sustainable development of society and contributes to the deterioration of the quality of the environment as a whole. For this reason, the stabilization and immobilization of heavy metals is a very topical issue. This paper deals with the possibility of the simultaneous immobilization of heavy metals (Ba2+, Pb2+, and Zn2+) in mortar based on magnesium potassium phosphate cement (MKPC). The structural, mechanical, and hygric parameters of mortars artificially contaminated with heavy metals in the form of salt solutions were investigated together with the formed hydration products. In the leachates of the prepared samples, the content of HMs was measured and the immobilization ratio of each HM was determined. The immobilization rate of all the investigated HMs was &gt;98.7%, which gave information about the effectiveness of the MKPC-based matrix for HM stabilization. Furthermore, the content of HMs in the leachates was below the prescribed limits for non-hazardous waste that can be safely treated without any environmental risks. Although the presence of heavy metals led to a reduction in the strength of the prepared mortar (46.5% and 57.3% in compressive and flexural strength, respectively), its mechanical resistance remained high enough for many construction applications. Moreover, the low values of the parameters characterizing the water transport (water absorption coefficient Aw = 4.26 × 10−3 kg·m−2·s−1/2 and sorptivity S = 4.0 × 10−6 m·s−1/2) clearly demonstrate the limited possibility of the leaching of heavy metals from the MKPC matrix structure. © 2023 by the authors.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

—

OECD FORD branch

10402 - Inorganic and nuclear chemistry

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

Name of the periodical

Materials

ISSN

1996-1944

e-ISSN

—

Volume of the periodical

16

Issue of the periodical within the volume

24

Country of publishing house

CH - SWITZERLAND

Number of pages

18

Pages from-to

7525

UT code for WoS article

—

EID of the result in the Scopus database

2-s2.0-85180616102