XAFS investigation for inhomogeneous and irreversible reaction mechanism in hydroxide/sulfide coprecipitation treatment
| Project/Area Number |
24561006
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Earth system and resources enginnering
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| Research Institution | Waseda University |
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Principal Investigator |
TOKORO Chiharu 早稲田大学, 理工学術院, 准教授 (90386615)
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| Co-Investigator(Kenkyū-buntansha) |
NUMAKO Chiya 千葉大学, 理学研究科, 准教授 (80284280)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 廃水処理 / 固液界面 / 固体分析 / 定量モデル / 表面錯体 / 表面沈殿 / 定量モデル化 / 水酸化物共沈 / ホウ素 / シリカ / 亜鉛 / 水酸化物共沈法 / ヒ素 / フッ素 / XAFS |
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| Outline of Final Research Achievements |
Immobilization mechanism of As(V), F, Si(IV), Zn(II) to ferrihydrite and aluminum hydroxide in co-precipitation process was revealed using several solid analysis and basic chemical engineering method, toward construction of efficient treatment process for acid mine drainage. Based on the knowledge obtained from these investigation, a quantitative model was constructed for immobilization of several toxic elements to in wastewater treatment, using chemical equilibrium calculation coupled by surface complexation model between each toxic element and ferrihydrite/aluminum hydroxide and reaction rate model of precipitation. Obtained model could represent experimental neutralization results using real acid mine drainage.
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Report
(4 results)
Research Products
(34 results)
