Preparation of Solid Fuel Hydrochar over Hydrothermal Carbonization of Red Jujube Branch
Biomass energy is becoming increasingly important, owing to the decreasing supply of fossil fuels and growing environmental problems. Hydrothermal carbonization (HTC) is a promising technology for producing solid biofuels from agricultural and forestry residues because of its lower fossil-fuel consu...
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MDPI AG
2020-01-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/2/480 |
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| author | Zhiyu Li Weiming Yi Zhihe Li Chunyan Tian Peng Fu Yuchun Zhang Ling Zhou Jie Teng |
| author_facet | Zhiyu Li Weiming Yi Zhihe Li Chunyan Tian Peng Fu Yuchun Zhang Ling Zhou Jie Teng |
| author_sort | Zhiyu Li |
| collection | DOAJ |
| description | Biomass energy is becoming increasingly important, owing to the decreasing supply of fossil fuels and growing environmental problems. Hydrothermal carbonization (HTC) is a promising technology for producing solid biofuels from agricultural and forestry residues because of its lower fossil-fuel consumption. In this study, HTC was used to upgrade red jujube branch (RJB) to prepare hydrochar at six temperatures (220, 240, 260, 280, 300, and 320 °C) for 120 min, and at 300 °C for 30, 60, 90, and 120 min. The results showed that the energy recovery efficiency (ERE) reached maximum values of 80.42% and 79.86% at a residence time of 90 min and a reaction temperature of 220 °C, respectively. X-ray diffraction results and Fourier transform infrared spectroscopy measurements show that the microcrystal features of RJB were destroyed, whereas the hydrochar contained an amorphous structure and mainly lignin fractions at increased temperatures. Thermogravimetric analysis shows that the hydrochar had better fuel qualities than RJB, making hydrochar easier to burn. |
| first_indexed | 2024-04-13T08:48:02Z |
| format | Article |
| id | doaj.art-b189c46992564e38a5623f0ce58ee0ac |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T08:48:02Z |
| publishDate | 2020-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-b189c46992564e38a5623f0ce58ee0ac2022-12-22T02:53:35ZengMDPI AGEnergies1996-10732020-01-0113248010.3390/en13020480en13020480Preparation of Solid Fuel Hydrochar over Hydrothermal Carbonization of Red Jujube BranchZhiyu Li0Weiming Yi1Zhihe Li2Chunyan Tian3Peng Fu4Yuchun Zhang5Ling Zhou6Jie Teng7School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, ChinaSchool of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, ChinaSchool of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, ChinaSchool of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, ChinaSchool of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, ChinaSchool of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, ChinaCollege of Mechanic and Electrical Engineering, Tarim University, Alar 843300, ChinaSchool of Agricultural Sciences, Jiangxi Agricultural University, Nanchang 330045, ChinaBiomass energy is becoming increasingly important, owing to the decreasing supply of fossil fuels and growing environmental problems. Hydrothermal carbonization (HTC) is a promising technology for producing solid biofuels from agricultural and forestry residues because of its lower fossil-fuel consumption. In this study, HTC was used to upgrade red jujube branch (RJB) to prepare hydrochar at six temperatures (220, 240, 260, 280, 300, and 320 °C) for 120 min, and at 300 °C for 30, 60, 90, and 120 min. The results showed that the energy recovery efficiency (ERE) reached maximum values of 80.42% and 79.86% at a residence time of 90 min and a reaction temperature of 220 °C, respectively. X-ray diffraction results and Fourier transform infrared spectroscopy measurements show that the microcrystal features of RJB were destroyed, whereas the hydrochar contained an amorphous structure and mainly lignin fractions at increased temperatures. Thermogravimetric analysis shows that the hydrochar had better fuel qualities than RJB, making hydrochar easier to burn.https://www.mdpi.com/1996-1073/13/2/480red jujube branchhydrothermal carbonizationhydrocharenergy recovery efficiencysolid fuel |
| spellingShingle | Zhiyu Li Weiming Yi Zhihe Li Chunyan Tian Peng Fu Yuchun Zhang Ling Zhou Jie Teng Preparation of Solid Fuel Hydrochar over Hydrothermal Carbonization of Red Jujube Branch Energies red jujube branch hydrothermal carbonization hydrochar energy recovery efficiency solid fuel |
| title | Preparation of Solid Fuel Hydrochar over Hydrothermal Carbonization of Red Jujube Branch |
| title_full | Preparation of Solid Fuel Hydrochar over Hydrothermal Carbonization of Red Jujube Branch |
| title_fullStr | Preparation of Solid Fuel Hydrochar over Hydrothermal Carbonization of Red Jujube Branch |
| title_full_unstemmed | Preparation of Solid Fuel Hydrochar over Hydrothermal Carbonization of Red Jujube Branch |
| title_short | Preparation of Solid Fuel Hydrochar over Hydrothermal Carbonization of Red Jujube Branch |
| title_sort | preparation of solid fuel hydrochar over hydrothermal carbonization of red jujube branch |
| topic | red jujube branch hydrothermal carbonization hydrochar energy recovery efficiency solid fuel |
| url | https://www.mdpi.com/1996-1073/13/2/480 |
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