Gasification and Hydrogen Production from Food Wastes Using High Pressure Superheated Steam in the Presence of Alkali Catalyst
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- Okajima Idzumi
- Department of Materials Science and Chemical Engineering, Shizuoka University
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- Shimoyama Daisuke
- Department of Materials Science and Chemical Engineering, Shizuoka University
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- Sako Takeshi
- Department of Materials Science and Chemical Engineering, Shizuoka University
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Abstract
We studied the hydrogen production from four kinds of wet food wastes using high pressure superheated steam, which is reactive water above the critical temperature and below the critical pressure of water. 1.8–2.0 mmoles of hydrogen gas were produced from 1 mmole of organic carbon in the wastes at 700°C, 10 MPa, 30 min, 20 of the molar ratio of water to organic carbon and 20 wt% of the potassium hydroxide to the organic content in the waste. The production of hydrogen gas was accelerated by increasing the temperature and molar ratio of water to organic carbon in the waste, but suppressed by increasing the pressure. On the other hand, the production of ammonia, which is a typical by-product of gasification of food wastes, reduced by increasing the temperature and decreasing the pressure. Judging from the experimental results, high pressure superheated steam with low pressure was more effective than supercritical water with high pressure. The calculated equilibrium mole fractions of hydrogen gas based on the ideal gas assumption agreed with the experimental data in wide temperature and pressure regions, but those of methane and carbon dioxide deviated from the data above 600°C.
Journal
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- JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
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JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 40 (4), 356-364, 2007
The Society of Chemical Engineers, Japan
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Details 詳細情報について
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- CRID
- 1390001204568556416
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- NII Article ID
- 80018572211
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- NII Book ID
- AA00709658
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- ISSN
- 18811299
- 00219592
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- HANDLE
- 10297/2615
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- NDL BIB ID
- 8705842
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed