Development of solid sorbents for the removal of elemental mercury from combustion flue gases
| Project/Area Number |
19K12381
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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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| Review Section |
Basic Section 64020:Environmental load reduction and remediation-related
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| Research Institution | Okayama University |
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Principal Investigator |
UDDIN MD. AZHAR 岡山大学, グローバル人材育成院, 教授 (00397902)
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | Mercury removal / Adsorbents / Coal combustion flue gas / Coal gasification gas / Incineration flue gas / Metal oxides / Metal sulfides / incineration flue gas / Adsorbent / metal oxides / metal sulfides / Incineration Flue gas / Iron sulfides / Mercury Removal / Coal Gasification Gas / Fe-Ce Oxide / Zn-Ce Oxide |
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| Outline of Research at the Start |
Development of highly efficiency clean utilization technology of coal are already in an advanced stage, however, the unresolved emissions of mercury associated with coal use has become globally an important issue. In the mercury capture technique, it is desirable that mercury to be removed and collected. The purpose of this project is development of effective sorbents consisting of activated carbon, metal oxides and metal sulfides nano-composites for the capture and recovery of elemental mercury from coal combustion flue gas and coal gasification fuel gas.
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| Outline of Final Research Achievements |
The main purpose of this study was to develop mercury removal agent or adsorbents from coal gasification fuel gas and coal combustion flue gas with an emphasis on recovery of mercury through understanding of the removal and recovery mechanism. Various kinds metal compounds such oxides and sulfides of metals such as iron (Fe), zinc (Zn), cerium (Ce), manganese (Mn), copper (Cu), etc. were developed. Both the CeO2-Fe2O3 and CeO2-ZnO bi-component adsorbent were more efficient and stable than a mono component adsorbent for mercury removal. Mercury is adsorbed on the adsorbent by forming mercury oxides and mercury sulfide.For combustion flue gas,10%FeO(OH)-slaked lime and 10% CuO-slaked lime exhibited high mercury removal performance, with an average removal rate of was 79.6% and 73.6%, respectively. Metal oxides and metal sulfides are very promising sorbents for mercury removal from coal combustion flue gas, coal gasification gas as well as from municipal waste incineration flue gases.
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| Academic Significance and Societal Importance of the Research Achievements |
The present study will cancontributes to the reduction of carbon dioxide emissions by supporting the highly efficient power generation system for utilization of coal. If the mercury removal technology could be established in Japan it will contribute to the removal recovery of mercury in Japan.
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Report
(5 results)
Research Products
(6 results)
