| Project/Area Number |
14550745
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
化学工学一般
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| Research Institution | KAGOSHIMA NATIONAL COLLEGE OF TECHNOLOGY |
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Principal Investigator |
MAEDA Shigeru KAGOSHIMA NATIONAL COLLEGE OF TECHNOLOGY, PRESIDENT, 校長 (90041566)
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| Co-Investigator(Kenkyū-buntansha) |
OHTAKE Takaaki KAGOSHIMA NATIONAL COLLEGE OF TECHNOLOGY, DEPARTMENT OF MECHANICAL ENGINEERING, PROFESSOR, 機械工学科, 教授 (80128339)
OKABAYASHI Takumi KAGOSHIMA NATIONAL COLLEGE OF TECHNOLOGY, DEPARTMENT OF CIVIL ENGINEERING, PROFESSOR, 土木工学科, 教授 (40044630)
HIRATA Tokio KAGOSHIMA NATIONAL COLLEGE OF TECHNOLOGY, DEPARTMENT OF CIVIL ENGINEERING, PROFESSOR, 土木工学科, 教授 (40038112)
MAENO Yuji KAGOSHIMA NATIONAL COLLEGE OF TECHNOLOGY, DEPARTMENT OF CIVIL ENGINEERING, ASSOCIATE PROFESSOR, 土木工学科, 助教授 (20190316)
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| Project Period (FY) |
2002 – 2003
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| Project Status |
Completed (Fiscal Year 2003)
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| Budget Amount *help |
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2003: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2002: ¥2,200,000 (Direct Cost: ¥2,200,000)
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| Keywords | Refuse incinerated ash / fly ash / Heavy metal / Antimony / Particle size distribution / Classification / Solvent extraction / Atomic absorption spectrometry / EDS / 原子吸光法 |
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| Research Abstract |
Ash from incinerated general municipal wastes of annual about 50 million tons are discharged from incineration plant. Recent years, the melting processing is mainly advanced as a treating process of the municipal waste, because it is feared that the dioxins and harmful heavy metals such as the arsenic affect the environment. However, the cost of initial plant investment is big and the power consumption necessary for the maintenance becomes also enormous. Besides, it becomes also a problem to continuously run. Ash from incinerated general municipal wastes contains fly ash and bottom ash. Though toxic substances such as heavy metal are mainly included for the fly ash, the toxic substances except for the small lead are not almost included for the bottom ash.
In this study, it focuses on fly ash, and then environmental pollution control of toxic substance and effective utilization of fly ash are examined. To begin with, type, concentration and distribution of noxious heavy metals such as the antimony that the toxicity is strong is said by comparing arsenic in incinerated ash, etc. are examined and the particle size distribution of incinerated ash is examined. On the basis of those results, the comparison between the particle size and the content rate of heavy metal is carried out. Next, the recovery of the heavy metal using solvent extraction operation, etc. is tried.
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