Fixation of heavy metal irons into ceramics by intercalation

• Project/Area Number: 23510088
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental technology/Environmental materials
• Research Institution: Tohoku University
• Principal Investigator: MIKI TAKAHIRO 東北大学, 工学(系)研究科(研究院), 准教授 (30312606)
• Project Period (FY): 2011 – 2013
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000); Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: インターカレーション / 重金属 / 固定化 / 環境保全技術

Research Abstract

Experiments to immobilize chromium using the clay minerals such as smectite was conducted. Saponite didn't adsorb chromium ions. However, when using montmorillonite, under the condition pH is 2, chromium was decreased from 1ppm to below the environmental standard value of 0.05ppm. Further, when heated in an air atmosphere 1573K a montmorillonite containing Cr, it was possible to fixate Cr. It was confirmed that it is possible to immobilize intercalated metal ions into clay minerals.