Electrochemical oxidation mechanism of pyrite in histidine,lysine,and arginine
During pyrite mining,tailings and waste residues are generated,and the oxidation of exposed metal sulfides leads to significant environmental issues such as acid mine drainage pollution.Studying the oxidation mechanism of pyrite is crucial for inhibiting or preventing the formation of acid mine drainage.Alkaline amino acids were used as electrolytes to explore the electrochemical oxidation mechanism of pyrite.Through electrochemical methods such as OCP,CV,Tafel polarization curve,LSV,and EIS,the electrochemical behavior of pyrite surfaces was measured,confirming the feasibility of pyrite oxidation in an alkaline amino acid system.The oxidation mechanisms of pyrite were consistent across the 3 alkaline amino acids,with the oxidation rate of pyrite following the order:lysine＞arginine＞histidine.
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