Use of Waste Sodium Sulfate from Battery Chemical Production in the Preparation of Alkali-Activated Materials
Heponiemi, Anne; Pesonen, Janne; Tynjälä, Pekka; Lassi, Ulla (2024-07-06)
American chemical society
06.07.2024
Heponiemi, A., Pesonen, J., Tynjälä, P., & Lassi, U. (2024). Use of waste sodium sulfate from battery chemical production in the preparation of alkali-activated materials. ACS Sustainable Resource Management, 1(7), 1400–1407. https://doi.org/10.1021/acssusresmgt.4c00052
https://rightsstatements.org/vocab/InC/1.0/
This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS sustainable resource management, copyright © 2024 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see 10.1021/acssusresmgt.4c00052.
https://rightsstatements.org/vocab/InC/1.0/
This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS sustainable resource management, copyright © 2024 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see 10.1021/acssusresmgt.4c00052.
https://rightsstatements.org/vocab/InC/1.0/
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202409175902
https://urn.fi/URN:NBN:fi:oulu-202409175902
Tiivistelmä
Abstract
Large amounts of metal sulfates are formed annually in industrial activities. Until now, there has been no cost-efficient technical method for the treatment of sulfate wastes. In this article, we present a study on the reuse of waste sodium sulfate solution from battery chemical production in the synthesis of alkali-activated materials (AAMs). Blast furnace slag was used as a raw material for the synthesis of AAM, and it was mixed with different ratios of sodium hydroxide and waste sodium sulfate solution. Characterization results showed that prepared materials had a similar kind of phase structure and a typical AAM composition. In addition, the chemical stability of the prepared AAMs was at a satisfactory level, and they obtained a high mechanical strength, 13.3 MPa, when up to 40 wt % of waste sulfate was added. Therefore, a waste sulfate solution is a potential raw material for the synthesis of AAMs.
Large amounts of metal sulfates are formed annually in industrial activities. Until now, there has been no cost-efficient technical method for the treatment of sulfate wastes. In this article, we present a study on the reuse of waste sodium sulfate solution from battery chemical production in the synthesis of alkali-activated materials (AAMs). Blast furnace slag was used as a raw material for the synthesis of AAM, and it was mixed with different ratios of sodium hydroxide and waste sodium sulfate solution. Characterization results showed that prepared materials had a similar kind of phase structure and a typical AAM composition. In addition, the chemical stability of the prepared AAMs was at a satisfactory level, and they obtained a high mechanical strength, 13.3 MPa, when up to 40 wt % of waste sulfate was added. Therefore, a waste sulfate solution is a potential raw material for the synthesis of AAMs.
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