環境

15:50 〜 17:20

[2P0110-14-01] カテコール鉄錯体を用いたキャリアマイクロエンカプセレーションとその黄鉄鉱酸化に対する効果

○李 欣龍¹、成輪 昂亮¹、原田 千絵¹、Tabelin Carlito¹、伊藤 真由美¹、廣吉 直樹¹ (1. 北海道大学)

キーワード：

第一鉄イオン、第二鉄イオン、カテコール、黄鉄鉱、酸化

Carrier-microencapsulation (CME) is a technique to form metal-oxide/hydroxide coating specifically on pyrite surface to suppress pyrite oxidation, which causes acid mine drainage formation. In this study, carrier-microencapsulation using Fe³⁺- and Fe²⁺-catecholate complexes was investigated by electrochemical and leaching experiments. The results showed that these complexes formed iron-oxyhydroxide coatings on pyrite and suppressed both anodic and cathodic half-cell reactions of pyrite oxidation.