| Title: | Sustainable hydrothermal co-carbonization of residues from the vegetable oil industry and sewage sludge : hydrochar production and liquid fraction valorisation |
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| Authors: | ID Petrovič, Aleksandra (Author)
ID Cenčič, Tjaša (Author)
ID Parlov Vuković, Jelena (Author)
ID Jednačak, Tomislav (Author)
ID Hribernik, Silvo (Author)
ID Vohl, Sabina (Author)
ID Urbancl, Danijela (Author)
ID Tišma, Marina (Author)
ID Čuček, Lidija (Author) |
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| Files: |  1-s2.0-S0360544224025349-main.pdf (8,68 MB)
MD5: 2F72CE781991081B9EE0BBC71A0093CD
 https://www.sciencedirect.com/science/article/pii/S0360544224025349?via%3Dihub
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FKKT - Faculty of Chemistry and Chemical Engineering
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| Abstract: | In this study, the hydrothermal co-carbonization (co-HTC) of residues from the vegetable oil industry (pumpkin oil cake– PC, hemp oil cake– HC) and sewage sludge (SS) was investigated for the first time. The co-HTC was performed at 250 C and atreatment time of 5 h. The effects of the mass ratio of the feedstocks (1:1, 1:3 and 3:1) on the properties of the HTC products were investigated using various analytical methods (NMR, XRD, 3D-EEM, FTIR, etc.). The co-HTC of SS with oil cakes resulted in improved fuel properties of the hydrochar and an increase in C content from 36.9 to 53.7 wt%, and an increase in the higher heating value (HHV) from 14.8 to 23.6 MJ/kg. The combination with HC gave hydrochars with a higher HHV and higher C content than the combination with PC. The hydrochar yield varied in the range of 39.4–55.3 wt%. NMR analysis revealed a higher proportion of aliphatic (~60 %) than aromatic compounds (~35 %) in the hydrochars, as well as a high content of orthophosphate and unsaturated fatty acids. The liquid fractions were rich in nutrients and organic compounds, but toxic to aquatic organisms. The hydrochars and liquid fractions performed well in the germination test with plant species. |
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| Keywords: | hydrothermal co-carbonization, sewage sludge, vegetable oil industry residues, hydrochar, liquid fraction, valorisation |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 28.02.2024 |
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| Article acceptance date: | 05.08.2024 |
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| Publication date: | 06.08.2024 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2024 |
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| Number of pages: | 14 str. |
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| Numbering: | Vol. 307 |
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| PID: | 20.500.12556/DKUM-91596  |
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| UDC: | 620.92/.98 |
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| ISSN on article: | 1873-6785 |
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| COBISS.SI-ID: | 204425731 |
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| DOI: | 10.1016/j.energy.2024.132760 |
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| Copyright: | © 2024 The Authors |
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| Publication date in DKUM: | 17.01.2025 |
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| Views: | 166 |
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| Downloads: | 22 |
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| Metadata: |    |
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| Categories: | Misc.
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