Stabilization of heavy metal species in contaminated water by photocatalysis and intercalation

• Project/Area Number: 20710055
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Environmental technology/Environmental materials
• Research Institution: Tohoku University
• Principal Investigator: MIKI Takahiro Tohoku University, 大学院・工学研究科, 准教授 (30312606)
• Project Period (FY): 2008 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2009: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2008: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: インターカレーション / 重金属 / 固定化

Research Abstract

In the present study, Na and Ca eluted from the clay mineral, and the pH of the solution increased when fixation of trivalent Cr by montmorillonite was done. Some effect was found when using Fe_2O_3. At acidic condition, effective fixation of Cr was confirmed. Cr was completely made fixed by heat treatment and sintering after Cr was absorbed. It was able to be confirmed that titania have potential to reduce the heavy metal ion in polluted water.