arsenopyrite and jarosite

arsenopyrite has been researched along with jarosite* in 1 studies

Other Studies

1 other study(ies) available for arsenopyrite and jarosite

ArticleYear
Humic acid promotes arsenopyrite bio-oxidation and arsenic immobilization.
    Journal of hazardous materials, 2020, 02-15, Volume: 384

    The bio-oxidative dissolution of arsenopyrite, the most severe arsenic contamination source, can be mediated by organic substances, but pertinent studies on this subject are scarce. In this study, the bio-oxidative dissolution of arsenopyrite by Sulfobacillus thermosulfidooxidans and arsenic immobilization were evaluated in the presence of humic acid (HA). The mineral dissolution was monitored through analyses of the parameters in solution, phase and element speciation transformations on the mineral surface, and arsenic immobilization on the surfaces of cells and jarosites-HA. The results show that the presence of HA enhances the dissolution of arsenopyrite, e.g., 7.1% of arsenopyrite was in the residue after 12 d of bio-oxidation compared to 19.3% in the absence of HA. Meanwhile, the presence of HA led to changes of the fates of As and Fe and no accumulation of elemental sulfur (S

    Topics: Arsenates; Arsenicals; Arsenites; Biodegradation, Environmental; Clostridiales; Ferric Compounds; Humic Substances; Iron Compounds; Minerals; Models, Theoretical; Oxidation-Reduction; Solubility; Sulfates; Sulfides; Surface Properties

2020