Recycling incinerated water treatment residue into alkaline-activated materials
Date
2024
Authors
Duan, W.
Zhuge, Y.
Liu, Y.
Editors
Wang, L.
Tsang, D.
Yan, J.
Tsang, D.
Yan, J.
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Book chapter
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Treatment and Utilization of Combustion and Incineration Residues, 2024 / Wang, L., Tsang, D., Yan, J. (ed./s), Ch.22, pp.405-419
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Abstract
Incinerated water treatment residue (WTR) is a municipal waste derived from drinking water and wastewater treatment processes, containing significant elements such as silicon, calcium, aluminum, and phosphorus. However, it also contains trace amounts of hazardous metals, including lead, antimony, and cobalt, which can pose environmental risks if improperly disposed of. The reutilization of incinerated WTR in the production of alkaline-activated materials (AAMs) offers a safe and sustainable solution for managing this waste.
AAMs serve as binders similar to cement but with a lower carbon footprint. This chapter begins by introducing the reaction process involved in AAM formation. The physical and chemical properties of incinerated WTR are then summarized, followed by a discussion on pretreatment methods for utilizing WTR as a precursor material. This chapter proceeds to discuss alkali activators and their effectiveness in activating WTR as a binder material. Detailed investigations are conducted on mechanical performance, hazardous metal immobilization capabilities, and microstructural characteristics of AAMs incorporating WTR.
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Copyright 2024 Elsevier