Determination of Relationship between Higher Heating Value and Atomic Ratio of Hydrogen to Carbon in Spent Coffee Grounds by Hydrothermal Carbonization
This study was a preliminary investigation of solid recovered fuel production from spent coffee grounds using the hydrothermal carbonization (HTC) technique. The spent coffee grounds (SCGs) were subjected to HTC at 170 to 250 °C. The biochar was characterized by proximate analysis, ultimate analysis...
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MDPI AG
2021-10-01
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| Online Access: | https://www.mdpi.com/1996-1073/14/20/6551 |
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| author | Jung Eun Park Gi Bbum Lee Cheol Jin Jeong Ho Kim Choong Gon Kim |
| author_facet | Jung Eun Park Gi Bbum Lee Cheol Jin Jeong Ho Kim Choong Gon Kim |
| author_sort | Jung Eun Park |
| collection | DOAJ |
| description | This study was a preliminary investigation of solid recovered fuel production from spent coffee grounds using the hydrothermal carbonization (HTC) technique. The spent coffee grounds (SCGs) were subjected to HTC at 170 to 250 °C. The biochar was characterized by proximate analysis, ultimate analysis, capillary suction time, time to filter, suspended solids, and particle size distribution. The biochar yields decreased with increasing HTC temperature and time. However, the higher heating value (HHV) of biochar increased with the HTC temperature and time. The H/C slop relative to the O/C atomic rate of spent coffee grounds was 0.10 with low decarboxylation selectivity. Considering the HHV of biochar and dehydration capacity depend on ratio of H/C vs. O/C, the optimum reaction temperature of HTC was 200 °C, and the biochar from SCGs is an attractive biochar. |
| first_indexed | 2024-03-10T06:35:51Z |
| format | Article |
| id | doaj.art-a0f3d770ba5f4bf1928f85baa0ca9022 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T06:35:51Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-a0f3d770ba5f4bf1928f85baa0ca90222023-11-22T18:04:57ZengMDPI AGEnergies1996-10732021-10-011420655110.3390/en14206551Determination of Relationship between Higher Heating Value and Atomic Ratio of Hydrogen to Carbon in Spent Coffee Grounds by Hydrothermal CarbonizationJung Eun Park0Gi Bbum Lee1Cheol Jin Jeong2Ho Kim3Choong Gon Kim4Center for Bio Resource, Institute for Advanced Engineering, Yongin-si 17180, KoreaCenter for Bio Resource, Institute for Advanced Engineering, Yongin-si 17180, KoreaCenter for Bio Resource, Institute for Advanced Engineering, Yongin-si 17180, KoreaCenter for Bio Resource, Institute for Advanced Engineering, Yongin-si 17180, KoreaCenter for Bio Resource, Institute for Advanced Engineering, Yongin-si 17180, KoreaThis study was a preliminary investigation of solid recovered fuel production from spent coffee grounds using the hydrothermal carbonization (HTC) technique. The spent coffee grounds (SCGs) were subjected to HTC at 170 to 250 °C. The biochar was characterized by proximate analysis, ultimate analysis, capillary suction time, time to filter, suspended solids, and particle size distribution. The biochar yields decreased with increasing HTC temperature and time. However, the higher heating value (HHV) of biochar increased with the HTC temperature and time. The H/C slop relative to the O/C atomic rate of spent coffee grounds was 0.10 with low decarboxylation selectivity. Considering the HHV of biochar and dehydration capacity depend on ratio of H/C vs. O/C, the optimum reaction temperature of HTC was 200 °C, and the biochar from SCGs is an attractive biochar.https://www.mdpi.com/1996-1073/14/20/6551biocharenergy densityhydrothermal carbonizationproximate analysisreaction temperaturespent coffee grounds |
| spellingShingle | Jung Eun Park Gi Bbum Lee Cheol Jin Jeong Ho Kim Choong Gon Kim Determination of Relationship between Higher Heating Value and Atomic Ratio of Hydrogen to Carbon in Spent Coffee Grounds by Hydrothermal Carbonization Energies biochar energy density hydrothermal carbonization proximate analysis reaction temperature spent coffee grounds |
| title | Determination of Relationship between Higher Heating Value and Atomic Ratio of Hydrogen to Carbon in Spent Coffee Grounds by Hydrothermal Carbonization |
| title_full | Determination of Relationship between Higher Heating Value and Atomic Ratio of Hydrogen to Carbon in Spent Coffee Grounds by Hydrothermal Carbonization |
| title_fullStr | Determination of Relationship between Higher Heating Value and Atomic Ratio of Hydrogen to Carbon in Spent Coffee Grounds by Hydrothermal Carbonization |
| title_full_unstemmed | Determination of Relationship between Higher Heating Value and Atomic Ratio of Hydrogen to Carbon in Spent Coffee Grounds by Hydrothermal Carbonization |
| title_short | Determination of Relationship between Higher Heating Value and Atomic Ratio of Hydrogen to Carbon in Spent Coffee Grounds by Hydrothermal Carbonization |
| title_sort | determination of relationship between higher heating value and atomic ratio of hydrogen to carbon in spent coffee grounds by hydrothermal carbonization |
| topic | biochar energy density hydrothermal carbonization proximate analysis reaction temperature spent coffee grounds |
| url | https://www.mdpi.com/1996-1073/14/20/6551 |
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