GRK 2802: Extra-carbonization of biochar pellets obtained after co-torrefaction and co-pyrolysis with bituminous coal
Type of the data | Dataset | |
Type of the data | Image | |
Total size of the dataset | 2726625 | |
Author | Koveria, Andrii | |
Author | Zuber, Jan | |
Author | Himcinschi, Cameliu | |
Author | Vogt, Carla | |
Author | Richter, Julia | |
Upload date | 2025-11-28T11:36:42Z | |
Publication date | 2025-11-28T11:36:42Z | |
Data of data creation | 2024-06 | |
Publication date | 2025-11-28 | |
Abstract of the dataset | The paper investigates the chemical and structural changes in biochar pellets resulting from the co-torrefaction and co-pyrolysis of pine wood (Pinus sylvestris) pellets with bituminous coal at a 1:1 ratio at 300, 500, and 700 °C. At 500 °C co-pyrolysis, noticeable changes occur in biochar during co-treatment with coal, as observed by Fourier-transform infrared spectroscopy (FT-IR), graphite-assisted laser desorption/ionization-Fourier transform ion cyclotron resonance mass spectrometry (GALDI-FT-ICR-MS), and Raman spectroscopy compared to individual pyrolysis. Proximate and ultimate analyses show an increase in carbon content and decreases in volatile matter, oxygen, and hydrogen in co-treated biochar pellets. FT-IR and van Krevelen plots indicate compounds with lower O/C ratios and fewer oxygen-rich functionalities. Raman spectroscopy shows that, at 300 and 500 °C, co-pyrolyzed biochar pellets have slightly more structural ordering and less disorder than biochar pellets from individual pyrolysis. This suggests that co-processing allows the creation of a more ordered aromatic carbon structure. GALDI-FT-ICR-MS indicates an increase in condensed aromatic hydrocarbons at the expense of lignin-like and oxygen-rich structures compared with individual pyrolysis. Specifically, 500 °C co-pyrolysis shifts biochar pellets composition toward lower O/C ratios (0–0.3); products are enriched in condensed aromatic hydrocarbons and occupy van Krevelen regions with low O/C (0–0.2) and H/C (0.4–0.8). The results demonstrate extra-carbonization effects in biochar pellets during co-pyrolysis with bituminous coal at 500 and 700 °C. | |
Public reference to this page | https://opara.zih.tu-dresden.de/handle/123456789/1865 | |
Publisher | Technische Universität Bergakademie Freiberg | |
Specification of the discipline(s) | 3::32::307::307-01 | |
Specification of the discipline(s) | 4::43::406::406-01 | |
Title of the dataset | GRK 2802: Extra-carbonization of biochar pellets obtained after co-torrefaction and co-pyrolysis with bituminous coal | |
Project abstract | Raman spectroscopy is used to investigate phases, functionalised surfaces and possible impurities of refractory recyclates for the production of novel refractory materials using environmentally friendly binders. Using in-situ Raman spectroscopy as a function of temperature, phase transitions can be detected and intermediate or by-products can be identified. The characterisation of carbon-bonded materials using Raman spectroscopy and, in particular, an understanding of the reactions during the coking of the environmentally friendly gelatine-based binders as a function of temperature is a key area of work. Raman spectroscopy is also applied to investigate inert, metalloceramic anode materials based on refractory recyclate and to monitor the microstructure design of composite materials by FAST/SPS. The aim is to understand temperature-induced structural and compositional changes (e.g. spinel formation of nickel ferrites) in the metalloceramic anode materials. | |
Funding Acknowledgement | The datasets were generated within the framework of the Research Training Group GRK 2802 (project ID: 461482547) funded by the German Research Foundation (DFG). | |
Public project website(s) | https://tu-freiberg.de/en/research/grk2802 | |
Project title | GRK2802_P9_Ramanspectroscopic-characterization-of-functionalised-recyclate-based-materials |