Rapid Oxidative Dissolution of Metallic Tin in Alkaline Solution Containing Iodate Ions

Yu ki Taninouchi, Tetsuya Uda

    Research output: Contribution to journalArticlepeer-review


    Abstract: Efficient and environmentally friendly tin leaching methods are of significant interest for the separation and recovery of tin from various materials such as tin-plated scraps and waste printed circuit boards. In this study, we investigated the oxidative dissolution of metallic tin in an alkaline solution. A pure tin specimen was leached at 30 °C using different oxidizing agents in a 1 M sodium hydroxide solution. The results demonstrated that iodate ion (IO3) is one of the most effective oxidizing agents for dissolving tin in alkaline media. A fundamental mechanism for tin dissolution into the leaching solution containing IO3 is proposed based on electrochemical measurements. In addition to the rapid dissolution of tin without much heating, the benefits of using IO3 as an oxidizing agent include its electrochemical regenerability. Thus, alkaline leaching using IO3 as an oxidizing agent is a potentially efficient technique for separating and recovering tin. Graphical Abstract: [Figure not available: see fulltext.]

    Original languageEnglish
    JournalJournal of Sustainable Metallurgy
    Publication statusAccepted/In press - 2021

    All Science Journal Classification (ASJC) codes

    • Environmental Science (miscellaneous)
    • Mechanics of Materials
    • Metals and Alloys


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