20.500.12556/DiRROS-28742 Chemical and thermogravimetric characterization of chestnut tree biomass waste towards sustainable resource utilization in the tannin industry Sweet chestnut (Castanea sativa Mill.) is a key European species, with Italy playing a crucial role in its forest cover and timber production. Chestnut wood processing generates significant residues,with approximately 40% waste at the sawmill stage alone. A major portion of this waste, including that from fruit tree plantations, is used in the tannin extraction industry, exemplifying a circular economy model. This study analyzed exhausted chestnut wood from the tannin industry, virgin wood (prior to tannin extraction), detannized wood (after tannin removal), and chestnut bark, which is separated before the tannin extraction process. The study assessed both the chemical composition and extractives content of the samples. FTIR analysis revealed structural modifications, with key spectral shifts (1640, 1420, 1240, and 1120 cm⁻¹) indicating enhanced aromatic conjugation after extractive removal. TGA analysis showed that detannized wood degraded faster at high temperatures, suggesting better combustibility and biofuel potential, while lignin-rich residues demonstrated greater thermal stability, making them suitable for insulation and biocomposite applications. These findings support optimizing waste utilization, reducing environmental impact, and enhancing resource efficiency. By promoting innovative uses for tannin industry byproducts, this research contributes to sustainability and strengthens circular economy strategies within the forest-wood sector. kemijska tehnologija industrija ekstrakcije taninov kostanjev les termogravimetrična analiza true false true Angleški jezik Slovenski jezik Neznano 2026-04-01 07:30:32 2026-04-01 07:43:24 2026-04-02 03:49:20 0000-00-00 00:00:00 2025 0 0 Nasl. z nasl. zaslona; Opis vira z dne 23. 5. 2025; str. 1-13 [article no.] 113 Vol. 83 19 May 2025 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 2025-05-19 2026-05-19 66 1436-736X 10.1007/s00107-025-02262-8 236954883 https://link.springer.com/article/10.1007/s00107-025-02262-8 1 e8d6517e-2d8b-11f1-9147-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=42774 RAZ_Jusic_Jasmina_2025.pdf RAZ_Jusic_Jasmina_2025.pdf 1 68B31FF51A730568DCF20DB2AA5921A8 6090f23255c4fdd4e068740a656cb0e8b1ce91817e0b200a748206542e1e9b94 419ab185-2d8d-11f1-9147-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=42775 Kemijski inštitut 0 0 0