講演情報
[2P0121-29-01]Effects of solution composition on anodic polarization curves of CuFeS2 in acidic chloride solutions (発表者：博士課程)
○ｸﾞｴﾝ ﾃｨ ﾌﾝ ﾀｵ1、Jeon Sanghee1、Park Ilhwan1、Tabelin Carlito Baltazar2、伊藤 真由美1、広吉 直樹1 (1. 北海道大学、2. ニューサウスウェールズ大学)
キーワード：
chalcopyrite、ferrous、cupric、chloride、proton
Effects of solution composition (Fe2+, Cu2+, Cl-, and H+ concentrations) on the anodic polarization curves of chalcopyrite in acidic chloride solutions were studied using the conventional three-electrode system at 25 oC under N2 atmosphere. An active-passive behavior was obtained in all examined conditions, i.e., the current increased with increasing redox potentials to reach a peak at a certain redox potential, then it decreased at higher redox potentials. At all applied redox potentials, the current increased with increasing Fe2+, Cu2+, and Cl- concentrations and decreased with increasing H+ concentrations. Based on the results, the mechanism of chalcopyrite dissolution was discussed.