20.500.12556/DKUM-94933 Energetska izraba ostankov fermentacije v trdnem stanju Energetic utilization of solid-state fermentation residues V diplomskem delu smo preučili možnosti energetske izrabe konopljinih pogač, ki so ostanek po fermentaciji v trdnem stanju (SSF) z glivo Thermomyces lanuginosus. Namen raziskave je bil ovrednotiti vpliv biološke predobdelave in temperature pirolize na sestavo biomase ter kakovost produktov termične obdelave. Pirolizo smo izvedli pri 300 °C in 700 °C v inertni atmosferi ter analizirali nastale trdne in tekoče produkte. Rezultati kažejo, da se je z višanjem temperature masni izkoristek zmanjšal, medtem ko so se zgornja kurilna vrednost, delež aromatskih struktur in vsebnost fiksnega ogljika povečali. Biološka obdelava je prispevala k znižanju vsebnosti hlapnih snovi in povečanju pepela, kar kaže na razgradnjo organske komponente biomase. Termogravimetrična analiza, izvedena v kisikovi in dušikovi atmosferi ter sklopljena s FTIR spektroskopijo, je pokazala sprembo v reaktivnosti biološko obdelanih vzorcev, z nižjo začetno temperaturo razgradnje in manjšimi izpusti hlapnih spojin. FTIR analiza je potrdila razgradnjo lignoceluloznih struktur ter večjo prisotnost aromatskih skupin pri višjih temperaturah pirolize. Ugotovili smo, da biološka predobdelava vpliva na sestavo biomase in lastnosti produktov pirolize, kar odpira možnosti za optimizacijo procesa energetske izrabe lignoceluloznih ostankov. In this thesis, we investigated the energy recovery potential of hemp cakes, which are the residue after solid-state fermentation (SSF) with the fungus Thermomyces lanuginosus. The study aimed to evaluate the influence of biological pre-treatment and pyrolysis temperature on biomass composition and the quality of thermal treatment products. Pyrolysis was carried out at 300 °C and 700 °C in an inert atmosphere, after which the resulting solid and liquid products were analysed. The results show that as the temperature rises, the mass yield decreases. However, the upper heating value, the proportion of aromatic structures and the fixed carbon content increase. Biological treatment resulted in a reduction in volatile matter content and an increase in ash content, indicating the decomposition of the organic component of the biomass. Thermogravimetric analysis, coupled with FTIR spectroscopy, was carried out under oxygen and nitrogen atmospheres. This showed an accompanying increase in the reactivity of the bio- treated samples, with a lower initial decomposition temperature and lower volatile compound emissions. FTIR analysis confirmed the degradation of lignocellulosic structures and an increased presence of aromatic groups at higher pyrolysis temperatures. Our findings suggest that biological pre-treatment influences the composition of biomass and the properties of pyrolysis products. This opens up the possibility of optimising the energy recovery process of lignocellulosic residues. energetska izraba piroliza ostanki fermentacije termogravimetrična analiza gorivne lastnosti energy utilization pyrolysis fermentation residues thermogravimetric analysis fuel properties true true false [E. Gradišnik] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-08-29 12:04:03 2025-09-12 13:58:20 2025-09-25 09:55:43 0000-00-00 00:00:00 2025 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 604.4:662.6(043.2) 250346755 UN_Gradisnik_Eva_2025.pdf UN_Gradisnik_Eva_2025.pdf 1 823F4C9FD6CAF5949B27E596C2B67B56 c65321310bf9006efef8cb66d69ad47f838edd4720deb817b3fc4968e14e320c f6c57bce-8e34-11f0-9a68-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=198100 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0