Effects of aluminum incorporation on the schwertmannite structure and surface properties
Sergio Carrero, Alejandro Fernández-Martı́nez, Rafael Pérez‐López, Jordi Cama, Catherine Dejoie, José Miguel Nieto
Abstract
) was in the range of that with pure schwertmannite, but a higher proportion of inner-sphere coordination was observed. Finally, Al was found to desorb from schwertmannite, with adsorbed arsenate preventing this effect and increasing the stability of the mineral. These results are useful to interpret observations from the field, in particular from river water affected by AMD and ASS, where similar conditions are observed, and where aluminum incorporation is expected.
Topics & Concepts
SchwertmanniteArsenateChemistryAdsorptionArsenicGoethiteFerrihydriteInorganic chemistrySulfateMineralSorptionArseniteOrganic chemistryMine drainage and remediation techniquesArsenic contamination and mitigationIron oxide chemistry and applications