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The chemistry of cement, its hydration and mechanisms of solidification/stabilization (s/s) of toxic metals by cement-based systems and pozzolanic materials are significantly controlled by surface, near-surface and interfacial phenomena. The adsorption conditions and the selectively strong affinity of hazardous metals towards clay minerals, certain hydrated metal oxides and oxyhydroxides, and cementitous...
A study has been conducted to evaluate the potential of a special scrubber waste, NISCO Cyclone Ash (NCA), which contains substantial calcium oxide and calcium sulfites/sulfates for solidification/stabilization (S/S) of toxic metal wastes. The mineralogical compositions of the NCA and a class ''C'' fly ash have been characterized by X-ray diffraction (XRD). Hydrated mixtures of these wastes have...
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