Comparative analysis of sulfate activation performance, leaching toxicity, and carbon emission of electrolytic manganese residue in different industrial wastes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F25%3A00380772" target="_blank" >RIV/68407700:21110/25:00380772 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.conbuildmat.2025.140188" target="_blank" >https://doi.org/10.1016/j.conbuildmat.2025.140188</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2025.140188" target="_blank" >10.1016/j.conbuildmat.2025.140188</a>

Result language

angličtina

Original language name

Comparative analysis of sulfate activation performance, leaching toxicity, and carbon emission of electrolytic manganese residue in different industrial wastes

Original language description

Electrolytic manganese residue (EMR) produced within manganese production is associated with the serious adverse effects including the land use, and contamination of the soil and water environment as a consequence of leaching of heavy metal and other hazardous compounds. To mitigate environmental issues, this study investigates the potential of EMR as a valuable secondary raw material for the replacement of traditional binders. In this regard, EMR and Ca(OH)₂ were selected as activators for steel slag (SS), fly ash (FA), and granulated blast furnace slag (GBFS), with a focus on investigating the activation effect of EMR on the SS/FA/GBFS-Ca(OH)₂ system. Analytical methods such as XRD, SEM-EDS, and FTIR were used to explore their hydration mechanisms, microstructure, and pollutant solidification mechanism. Results showed that EMR had a limited activation effect on the SS/FA-Ca(OH)₂ system, yielding few and loosely structured hydration products, with a maximum 28-day compressive strength of 12.34 MPa. In contrast, the utilization of EMR exhibited a synergistic activation effect on the GBFS-Ca(OH)₂ system, forming substantial amounts of ettringite and C-S-H gel with interwoven hydration products that created a dense network structure. EMR-GBFS-Ca(OH)₂ system achieved a maximum 28-day compressive strength of 44.52 MPa, thus can be provide comparable strength to conventional cement-based binders. In addition, the EMR-GBFS-Ca(OH)2 system involved extensive ion exchange, encapsulation, and precipitation of Mn2 + by hydration products AFt, C-S-H and Fe2Mn(PO4)2(OH)2(H2O)8, ensuring compliance with standards considering the manganese species leaching concentration. Notable CO2 emissions savings related to EMR-based binders compared to traditional binders represent an another benefit associated with utilization of EMR in building materials. Revealed findings show the potential of industrial waste as a replacement of conventional materials with concurrent mitigation of the environmental hazard toward sustainable building materials.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2025

Confidentiality

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

Name of the periodical

Construction and Building Materials

ISSN

0950-0618

e-ISSN

1879-0526

Volume of the periodical

466

Issue of the periodical within the volume

140188

Country of publishing house

GB - UNITED KINGDOM

Number of pages

19

Pages from-to

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UT code for WoS article

001423201700001

EID of the result in the Scopus database

2-s2.0-85216706634