Removal of harmful components from inorganic wastes by tchlorination volatilization method using soil and mixed salts

• Project/Area Number: 22560739
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Metal making engineering
• Research Institution: Nagoya University
• Principal Investigator: FUJISAWA Toshiharu 名古屋大学, 工学研究科, 教授 (20115629)
• Co-Investigator(Kenkyū-buntansha): SANO Hiroyuki 名古屋大学, 大学院・工学研究科, 助教 (50314050)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: 土壌 / 塩化物 / 塩化揮発 / 鉛 / 珪藻土 / 無機系廃棄物 / 除去 / 重金属 / HC1

Research Abstract

Removal of harmful components from inorganic wastes by the chlorination volatilization method using the soil and the mixed salts was developed. CaCl2 was desirable as a chlorination agent because it was able to keep reacting effectively for a long time. The addition of the soil was not necessary when the waste contained high concentration of SiO2. The chlorination treatment was required about 800 to 1000℃, and it depended on the stability of lead in the waste. It is necessary to flow the carrier gas including moderate moisture.