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Sorption mechanisms of heavy metals at the mineral/water interface are largely controlled by the type and number of sorption sites on the mineral surfaces. However, in the case of layered manganese oxides, with a highly reactive interlayer (internal) region, the effects of variable substructures on their sorption sites, sorption capacities and characteristics are still obscure. Sorption experiments...
The relationship between vacant Mn structural sites in birnessites and heavy-metal adsorption is a current and important research topic. In this study, two series of birnessites with different average oxidation states (AOS) of Mn were synthesized. One birnessite series was prepared in acidic media (49.6–53.6 wt.% Mn) and theother in alkalinemedia (50.0–56.2 wt.% Mn). Correlations between the Pb2+...
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