Mechanisms of hydroxyl radicals production from pyrite oxidation by hydrogen peroxide: Surface versus aqueous reactions

• Published in: Geochimica et cosmochimica acta Vol. 238; no. C; pp. 394 - 410
• Main Authors: Zhang, Peng, Huang, Wan, Ji, Zhuan, Zhou, Chenggang, Yuan, Songhu
• Format: Journal Article
• Language: English
• Published: United States Elsevier Ltd 01.10.2018; Elsevier
• Subjects: Hydrogen peroxide; Hydroxyl radical; Oxidation; Pyrite; Surface; Oxidation; Pyrite; Hydrogen peroxide; Hydroxyl radical; Surface

Pyrite oxidation by hydrogen peroxide (H2O2) occurs in both natural and engineered systems. Hydroxyl radical (OH) is a key reactive intermediate for pyrite and coexisting substances oxidation. In acidic H2O2/pyrite systems, H2O2 decomposition by aqueous Fe2+ is documented to predominate for OH produ...