Fixation of carbon dioxide, and processing and recycling of waste of by a hydrothermal sonochemistry
| Project/Area Number |
17360428
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Earth system and resources enginnering
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| Research Institution | Tohoku University |
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Principal Investigator |
JIN Fangming Tohoku University, Graduate School of Environmental Studies, Associate Professor (90323039)
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| Co-Investigator(Kenkyū-buntansha) |
ENOMOTO Heiji Tohoku university, Professor Emeritus (80005412)
KISHITA Atushi Tohoku university, Graduate School of Environmental Studies, Assistant Professor (70261592)
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| Project Period (FY) |
2005 – 2006
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| Project Status |
Completed (Fiscal Year 2006)
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| Budget Amount *help |
¥15,200,000 (Direct Cost: ¥15,200,000)
Fiscal Year 2006: ¥8,600,000 (Direct Cost: ¥8,600,000)
Fiscal Year 2005: ¥6,600,000 (Direct Cost: ¥6,600,000)
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| Keywords | Carbon dioxide / hydrothermal / sonochemistry / rcycling / waste / reducig agent |
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| Research Abstract |
1. The small batch type reaction apparatus which can enter an ultrasonic wave into the possibility reaction vessel of sono-chemical application which can be put on a high temperature high-pressure reaction place is manufactured, The reaction vessel was heated, it investigated whether incidence and the same observation of a distortion waveform would be possible in an ultrasonic wave to high temperature high-pressure underwater, and the existence of the influence by heating temperature was investigated to the conditions (374 degrees C, 22MPa) of the supercritical water which makes this the criterion of judgment of cavity generating. The possibility that generating of a hot spot which used the ultrasonic wave also on supercritical water conditions was possible, and sono-chemistry reaction by this was effective in promotion of the reaction effect in a hydrothermal reaction was shown.
2. Examination of hydrogen generation from water by hydrogen sulfide
By the Heisei 17 fiscal year, reduction
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fixation of CO2 by vulcanization rubber and hydrogen sulfide will be considered, and it will be surmised that the reduction fixed effect of CO2 returned CO2 by hydrogen from the water by hydrogen sulfide. Therefore, it investigated about the influence and the reaction mechanism of reaction conditions which are exerted on the hydrogen generation reaction from the water by hydrogen sulfide.
(1) Influence of the reaction conditions exerted on the hydrogen generation reaction from the water by hydrogen sulfide
(a) The hydrogen generation reaction from the water by hydrogen sulfide found that an alkaline water heat reaction place of 250 degrees C or more was required.
(b) Although the amount of emergence of hydrogen increases rapidly in time earlier than 60min with the increase in reaction time, the increase after 60min is stabilizing.
(c) Depend for the amount of emergence of hydrogen on the quantity of HS-.
(2) As a result of conducting ion analysis about the solution after the hydrogen generation reaction mechanism reaction from the water by hydrogen sulfide, sulfurous acid and thiosulfuric acid ion were detected. It is thought that H2S oxidized, electrons were emitted and the electron was supplied from this result for reduction.
3. Examination of CO2 reduction at the time of using carbohydrate as reducing agent As a result of experimenting using glucose as a model thing of carbohydrate, after-reaction CO2 quantity was decreasing a little, but the significant difference by the existence of glucose was not seen. Less
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Report
(3 results)
Research Products
(2 results)
