Effect of Reaction Temperature and Type of Catalyst on Hydrogen Production in Supercritical Water Gasification of Biomass
The aim of this study was to investigate the feasibility of hydrogen production from sugarcane bagasse by supercritical water gasification (SCWG) at low temperature and in presence of alkali catalyst. Experiments were carried out in a batch autoclave reactor at 400 °C and 9% solid content. Effect of...
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| Format: | Article |
| Language: | English |
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Babol Noshirvani University of Technology
2012-01-01
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| Series: | Iranica Journal of Energy and Environment |
| Subjects: | |
| Online Access: | http://www.ijee.net/Journal/ijee/vol3/no3/1.pdf |
| _version_ | 1797227491847307264 |
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| author | Ebrahimi-Nik Mohammadali Mohammad Javad Sheikhdavoodi Morteza Almassi Andrea Kruse Houshang Bahrami |
| author_facet | Ebrahimi-Nik Mohammadali Mohammad Javad Sheikhdavoodi Morteza Almassi Andrea Kruse Houshang Bahrami |
| author_sort | Ebrahimi-Nik Mohammadali |
| collection | DOAJ |
| description | The aim of this study was to investigate the feasibility of hydrogen production from sugarcane bagasse by supercritical water gasification (SCWG) at low temperature and in presence of alkali catalyst. Experiments were carried out in a batch autoclave reactor at 400 °C and 9% solid content. Effect of reaction time and alkali catalyst on gas yield, gas composition, carbon gasification efficiency (CGE) and hydrogen gasification efficiency (HGE) were investigated. Influence of reaction time on gas yield and composition as well as on CGE was found to be insignificant. Extending the reaction time even up to 4 h could not cause an attractive conversion of bagasse. In the presence of catalysts (K2CO3, KHCO3, NaHCO3 and NaOH), sugarcane bagasse was partially gasified in SCW and hydrogen-rich gas containing CO2 as the main carbon compound was produced. Among the implemented catalysts, K2CO3 was identified to be the most effective for improvement of HGE. Use of the catalyst under our experimental conditions, the maximum HGE of 19% was achieved; however the highest CGE occurred with KHCO3. Results showed that feed to catalyst ratio of 2 was high enough to reach the greatest possible gasification of hydrogen at 400 °C and 45 min. More CGE and HGE would be possible only by increasing the temperature, pressure and/or reaction time. |
| first_indexed | 2024-04-24T14:41:39Z |
| format | Article |
| id | doaj.art-6333161da83f4b608e5fb14b12c979dd |
| institution | Directory Open Access Journal |
| issn | 2079-2115 2079-2123 |
| language | English |
| last_indexed | 2024-04-24T14:41:39Z |
| publishDate | 2012-01-01 |
| publisher | Babol Noshirvani University of Technology |
| record_format | Article |
| series | Iranica Journal of Energy and Environment |
| spelling | doaj.art-6333161da83f4b608e5fb14b12c979dd2024-04-02T20:58:12ZengBabol Noshirvani University of TechnologyIranica Journal of Energy and Environment2079-21152079-21232012-01-0133202209Effect of Reaction Temperature and Type of Catalyst on Hydrogen Production in Supercritical Water Gasification of BiomassEbrahimi-Nik MohammadaliMohammad Javad SheikhdavoodiMorteza AlmassiAndrea KruseHoushang BahramiThe aim of this study was to investigate the feasibility of hydrogen production from sugarcane bagasse by supercritical water gasification (SCWG) at low temperature and in presence of alkali catalyst. Experiments were carried out in a batch autoclave reactor at 400 °C and 9% solid content. Effect of reaction time and alkali catalyst on gas yield, gas composition, carbon gasification efficiency (CGE) and hydrogen gasification efficiency (HGE) were investigated. Influence of reaction time on gas yield and composition as well as on CGE was found to be insignificant. Extending the reaction time even up to 4 h could not cause an attractive conversion of bagasse. In the presence of catalysts (K2CO3, KHCO3, NaHCO3 and NaOH), sugarcane bagasse was partially gasified in SCW and hydrogen-rich gas containing CO2 as the main carbon compound was produced. Among the implemented catalysts, K2CO3 was identified to be the most effective for improvement of HGE. Use of the catalyst under our experimental conditions, the maximum HGE of 19% was achieved; however the highest CGE occurred with KHCO3. Results showed that feed to catalyst ratio of 2 was high enough to reach the greatest possible gasification of hydrogen at 400 °C and 45 min. More CGE and HGE would be possible only by increasing the temperature, pressure and/or reaction time.http://www.ijee.net/Journal/ijee/vol3/no3/1.pdfSupercritical water gasificationSugarcane bagasseAlkali catalystHydrogen gasification efficiency |
| spellingShingle | Ebrahimi-Nik Mohammadali Mohammad Javad Sheikhdavoodi Morteza Almassi Andrea Kruse Houshang Bahrami Effect of Reaction Temperature and Type of Catalyst on Hydrogen Production in Supercritical Water Gasification of Biomass Iranica Journal of Energy and Environment Supercritical water gasification Sugarcane bagasse Alkali catalyst Hydrogen gasification efficiency |
| title | Effect of Reaction Temperature and Type of Catalyst on Hydrogen Production in Supercritical Water Gasification of Biomass |
| title_full | Effect of Reaction Temperature and Type of Catalyst on Hydrogen Production in Supercritical Water Gasification of Biomass |
| title_fullStr | Effect of Reaction Temperature and Type of Catalyst on Hydrogen Production in Supercritical Water Gasification of Biomass |
| title_full_unstemmed | Effect of Reaction Temperature and Type of Catalyst on Hydrogen Production in Supercritical Water Gasification of Biomass |
| title_short | Effect of Reaction Temperature and Type of Catalyst on Hydrogen Production in Supercritical Water Gasification of Biomass |
| title_sort | effect of reaction temperature and type of catalyst on hydrogen production in supercritical water gasification of biomass |
| topic | Supercritical water gasification Sugarcane bagasse Alkali catalyst Hydrogen gasification efficiency |
| url | http://www.ijee.net/Journal/ijee/vol3/no3/1.pdf |
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