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Mechanistic Insights into Cd²⁺ Immobilization in a Low-Si/Al Lead-Zinc Tailings-Based One-Part Geopolymer
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DOI:10.1016/j.hazadv.2026.101431.png)
Abstract
En 中文
• Cd²⁺ delayed the secondary exothermic peak by up to 11.57 h. • The 120-h cumulative heat release decreased by 13.4–35.0%. • The 28-d strength decreased by 71.7% at 1.50 wt.% Cd²⁺. • High relative Cd retention coexisted with increasing absolute Cd release. • Cd retention involved dispersed species, matrix association, and encapsulation.
Keywords:
Cadmium
Lead-zinc tailings
One-part geopolymer
Immobilization mechanism
Leaching behavior
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