ferrihydrite has been researched along with arsenic-trisulfide* in 2 studies
2 other study(ies) available for ferrihydrite and arsenic-trisulfide
| Article | Year |
|---|---|
Dissolution and final fate of arsenic associated with gypsum, calcite, and ferrihydrite: Influence of microbial reduction of As(V), sulfate, and Fe(III).
Several studies have demonstrated that gypsum (CaSO Topics: Arsenates; Arsenic; Arsenicals; Arsenites; Bacteria; Calcium Carbonate; Calcium Sulfate; Carbonates; Ferric Compounds; Groundwater; Iron; Molybdenum; Oxidation-Reduction; Solubility; Sulfates; Sulfides | 2020 |
Ferric minerals and organic matter change arsenic speciation in copper mine tailings.
Arsenic (As) is commonly associated with Cu ore minerals, with the resultant risk that As can be released offsite from mine tailings. We used synchrotron-based fluorescence X-ray absorption near-edge spectroscopy (XANES) imaging to provide in situ, laterally-resolved speciation of As within tailings which differed in magnetite content (5-12%) and organic matter content (0-5%). Although the total As content was lower in tailings with low magnetite (LM), the soluble (pore water) As was actually 7-times higher in LM tailings than in high magnetite (HM) tailings. Additionally, amendment with 5% sugarcane mulch residues (SMR) (for revegetation) further increased soluble As due to the dissolution and oxidation of arsenopyrite or orpiment. Indeed, in HM tailings, arsenopyrite and orpiment initially accounted for 88% of the total As, which decreased to 48% upon the addition of SMR - this being associated with an increase in As Topics: Arsenic; Arsenicals; Copper; Ferric Compounds; Ferrosoferric Oxide; Iron; Iron Compounds; Minerals; Mining; Saccharum; Soil; Soil Pollutants; Solubility; Sulfides; Water Pollutants, Chemical | 2016 |