Effect of Olive Kernel thermal treatment (torrefaction vs. slow pyrolysis) on the physicochemical characteristics and the CO2 or H2O gasification performance of as-prepared biochars
The thermochemical conversion of biomass through its gasification has been widely explored during the last decades. The generated bio-syngas mixture can be directly used as fuel in thermal engines and fuel cells or as intermediate building block to produce synthetic liquid fuels and/or value added chemicals at large scales. In the present work, the effect of Greek olive kernel (OK) thermal treatment (torrefaction at 300 °C vs. slow pyrolysis at 500 and 800 °C) on the physicochemical characteristics and CO2 or H2O gasification performance of as-produced biochars is examined. Both the pristine OK sample and biochars (OK300, OK500, OK800) were fully characterized by employing a variety of physicochemical methods. The results clearly revealed the beneficial effect of thermal pretreatment on the gasification performance of as-prepared biochars. Α close relationship between the physicochemical properties of fuel samples and gas production was disclosed. Carbon dioxide gasification leads mainly to CO with minor amounts of H2 and CH4, whereas steam gasification results in a mixture containing CO2, CO, H2 and CH4 with a H2/CO ratio varied between 1.3 and 2.3. The optimum gasification performance was obtained for the slowly pyrolyzed samples (OK500 and OK800), due to their higher carbon and ash content as well as to their higher porosity and less ordered structure compared to pristine (OK) and torrefied (OK300) samples.
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Elsevier
2020-12-17
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| Subjects: | Biochar, Biomass, Olive kernel, Torrefaction, Slow pyrolysis, CO2 and H2O gasification, |
| Online Access: | http://hdl.handle.net/10261/265726 https://api.elsevier.com/content/abstract/scopus_id/85097878494 |
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dig-incar-es-10261-2657262024-05-20T20:41:04Z Effect of Olive Kernel thermal treatment (torrefaction vs. slow pyrolysis) on the physicochemical characteristics and the CO2 or H2O gasification performance of as-prepared biochars Lampropoulos, Athanasios Kaklidis, Nikolaos Athanasiou, Costas Montes Morán, Miguel Ángel Arenillas de la Puente, Ana Menéndez Díaz, José Ángel Binas, Vassilios D. Konsolakis, Michalis Marnellos, G.E. Greek Government Montes Morán, Miguel Ángel [0000-0002-8791-5582] Arenillas de la Puente, Ana [0000-0002-5388-1169] Menéndez Díaz, José Ángel [0000-0003-3117-3337] Biochar Biomass Olive kernel Torrefaction Slow pyrolysis CO2 and H2O gasification The thermochemical conversion of biomass through its gasification has been widely explored during the last decades. The generated bio-syngas mixture can be directly used as fuel in thermal engines and fuel cells or as intermediate building block to produce synthetic liquid fuels and/or value added chemicals at large scales. In the present work, the effect of Greek olive kernel (OK) thermal treatment (torrefaction at 300 °C vs. slow pyrolysis at 500 and 800 °C) on the physicochemical characteristics and CO2 or H2O gasification performance of as-produced biochars is examined. Both the pristine OK sample and biochars (OK300, OK500, OK800) were fully characterized by employing a variety of physicochemical methods. The results clearly revealed the beneficial effect of thermal pretreatment on the gasification performance of as-prepared biochars. Α close relationship between the physicochemical properties of fuel samples and gas production was disclosed. Carbon dioxide gasification leads mainly to CO with minor amounts of H2 and CH4, whereas steam gasification results in a mixture containing CO2, CO, H2 and CH4 with a H2/CO ratio varied between 1.3 and 2.3. The optimum gasification performance was obtained for the slowly pyrolyzed samples (OK500 and OK800), due to their higher carbon and ash content as well as to their higher porosity and less ordered structure compared to pristine (OK) and torrefied (OK300) samples. This research has been co-financed by the European Union and Greek national funds through the Operational Program Competitiveness, Entrepreneurship and Innovation, under the call RESEARCH - CREATE - INNOVATE (project code: T1EDK-01894). Peer reviewed 2022-03-30T10:54:05Z 2022-03-30T10:54:05Z 2020-12-17 artículo http://purl.org/coar/resource_type/c_6501 International Journal of Hydrogen Energy 46(57): 29126-29141 (2021) 0360-3199 http://hdl.handle.net/10261/265726 10.1016/j.ijhydene.2020.11.230 2-s2.0-85097878494 https://api.elsevier.com/content/abstract/scopus_id/85097878494 en International Journal of Hydrogen Energy https://doi.org/10.1016/j.ijhydene.2020.11.230 Sí none Elsevier |
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Biochar Biomass Olive kernel Torrefaction Slow pyrolysis CO2 and H2O gasification Biochar Biomass Olive kernel Torrefaction Slow pyrolysis CO2 and H2O gasification |
| spellingShingle |
Biochar Biomass Olive kernel Torrefaction Slow pyrolysis CO2 and H2O gasification Biochar Biomass Olive kernel Torrefaction Slow pyrolysis CO2 and H2O gasification Lampropoulos, Athanasios Kaklidis, Nikolaos Athanasiou, Costas Montes Morán, Miguel Ángel Arenillas de la Puente, Ana Menéndez Díaz, José Ángel Binas, Vassilios D. Konsolakis, Michalis Marnellos, G.E. Effect of Olive Kernel thermal treatment (torrefaction vs. slow pyrolysis) on the physicochemical characteristics and the CO2 or H2O gasification performance of as-prepared biochars |
| description |
The thermochemical conversion of biomass through its gasification has been widely explored during the last decades. The generated bio-syngas mixture can be directly used as fuel in thermal engines and fuel cells or as intermediate building block to produce synthetic liquid fuels and/or value added chemicals at large scales. In the present work, the effect of Greek olive kernel (OK) thermal treatment (torrefaction at 300 °C vs. slow pyrolysis at 500 and 800 °C) on the physicochemical characteristics and CO2 or H2O gasification performance of as-produced biochars is examined. Both the pristine OK sample and biochars (OK300, OK500, OK800) were fully characterized by employing a variety of physicochemical methods. The results clearly revealed the beneficial effect of thermal pretreatment on the gasification performance of as-prepared biochars. Α close relationship between the physicochemical properties of fuel samples and gas production was disclosed. Carbon dioxide gasification leads mainly to CO with minor amounts of H2 and CH4, whereas steam gasification results in a mixture containing CO2, CO, H2 and CH4 with a H2/CO ratio varied between 1.3 and 2.3. The optimum gasification performance was obtained for the slowly pyrolyzed samples (OK500 and OK800), due to their higher carbon and ash content as well as to their higher porosity and less ordered structure compared to pristine (OK) and torrefied (OK300) samples. |
| author2 |
Greek Government |
| author_facet |
Greek Government Lampropoulos, Athanasios Kaklidis, Nikolaos Athanasiou, Costas Montes Morán, Miguel Ángel Arenillas de la Puente, Ana Menéndez Díaz, José Ángel Binas, Vassilios D. Konsolakis, Michalis Marnellos, G.E. |
| format |
artículo |
| topic_facet |
Biochar Biomass Olive kernel Torrefaction Slow pyrolysis CO2 and H2O gasification |
| author |
Lampropoulos, Athanasios Kaklidis, Nikolaos Athanasiou, Costas Montes Morán, Miguel Ángel Arenillas de la Puente, Ana Menéndez Díaz, José Ángel Binas, Vassilios D. Konsolakis, Michalis Marnellos, G.E. |
| author_sort |
Lampropoulos, Athanasios |
| title |
Effect of Olive Kernel thermal treatment (torrefaction vs. slow pyrolysis) on the physicochemical characteristics and the CO2 or H2O gasification performance of as-prepared biochars |
| title_short |
Effect of Olive Kernel thermal treatment (torrefaction vs. slow pyrolysis) on the physicochemical characteristics and the CO2 or H2O gasification performance of as-prepared biochars |
| title_full |
Effect of Olive Kernel thermal treatment (torrefaction vs. slow pyrolysis) on the physicochemical characteristics and the CO2 or H2O gasification performance of as-prepared biochars |
| title_fullStr |
Effect of Olive Kernel thermal treatment (torrefaction vs. slow pyrolysis) on the physicochemical characteristics and the CO2 or H2O gasification performance of as-prepared biochars |
| title_full_unstemmed |
Effect of Olive Kernel thermal treatment (torrefaction vs. slow pyrolysis) on the physicochemical characteristics and the CO2 or H2O gasification performance of as-prepared biochars |
| title_sort |
effect of olive kernel thermal treatment (torrefaction vs. slow pyrolysis) on the physicochemical characteristics and the co2 or h2o gasification performance of as-prepared biochars |
| publisher |
Elsevier |
| publishDate |
2020-12-17 |
| url |
http://hdl.handle.net/10261/265726 https://api.elsevier.com/content/abstract/scopus_id/85097878494 |
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