20.500.12556/DKUM-38551 ŠTUDIJ VPLIVA PROCESNIH POGOJEV NA HIDROTERMIČNE REAKCIJE ODPADNE BIOMASE PRI PREDELAVI OLIV S TAGUCHI METODO INFLUENCE OF PROCESS PARAMETERS ON HYDROTHERMAL REACTIONS OF WASTE BIOMASS FROM OLIVE OIL PRODUCTION WITH TAGUCHI METHOD Olivna biomasa predstavlja vredno surovino za integrirano proizvodnjo baznih kemikalij, goriv in energijo. S pomočjo hidrotermičnih procesov, ki temeljijo na uporabi subkritične vode, smo biomaso pretvorili v različne produkte. Hidrotermične reakcije smo izvajali v HP/HT šaržnem reaktorju. V prvem delu raziskav nas je zanimala sestava olivne biomase (oljčne tropine). Sestavo biomase smo določili po NREL metodah. Določili smo odstotni delež ekstraktivnih snovi, lignina in ogljikovih hidratov ter s pomočjo HPLC določili strukturne ogljikove hidrate. Načrt izvajanja eksperimentov smo pripravili s pomočjo Taguchi metode, ki nam je omogočil minimalno število eksperimentov, glede na število procesnih parametrov in število nivojev. Eksperimentalni rezultati so bili izhodišče za analizo vpliva na izkoristek vodotopnih in aceton topnih produktov, ter na lastnosti in sestavo vodotopne frakcije. Z uporabo spektrofotometrijskih metod smo vodotopnemu ekstraktu določili vsebnost totalnih fenolov, totalnih flavonoidov, taninov ter antioksidativno aktivnost. Načrtovanim eksperimentom smo določili vpliv posameznih procesnih pogojev (temperatura, tlak, razmerje topilo/tropine, dodatek katalizatorja in reakcijski čas) na potek hidrotermične reakcije odpadne olivne biomase. Tega smo se lotili z grafično in statistično analizo ANOVA. Teoretično smo določili optimalne pogoje, ter jih preverili z dodatnimi eksperimenti pri optimalnih pogojih. Olive biomass represents valuable raw material for integrated production of base chemicals, fuels and energy. With the help of hydrothermal processes that are based on the use of sub critical water, biomass can be converted into different products. Hydrothermal reactions were performed in HP / HT batch reactor. In the first part of the research the composition of olive biomass (olive pomace) was analyzed by NREL methods. The percentage of extractive substances, lignin and carbohydrates was determined; and with the help of HPLC also structural carbohydrates were analyzed. The plan for performing the experiments was prepared using the Taguchi method, which allows the minimal number of experiments, depending on the number of process parameters and the number of levels. Experimental results were the starting point for the analysis of the impact of process parameters on the yield of water-soluble and acetone-soluble products, and the characteristics and composition of the water-soluble fraction. By using spectrophotometric methods total content of phenols, total flavonoids, tannins and antioxidant activity of water-soluble products was determined. For experiments the influence of individual process conditions (temperature, pressure, ratio of solvent /pomace, addition of catalyst and reaction time) on the course of hydrothermal reaction for waste olive biomass was determined. This was done with graphical and statistical analysis called ANOVA. The optimal conditions were determined theoretically, and were verified with additional experiments under optimal conditions. olivna biomasa hidrotermična reakcija subkritična voda izkoristek totalni fenoli totalni flavonoidi tanini antioksidativna aktivnost Taguchi metoda procesni parametri optimalni pogoji ekstraktivne snovi lignin ogljikovi hidrati. olive biomass hydrothermal reaction subcritical water efficiency total phenols total flavonoids tannins antioxidant activity Taguchi method process parameters optimal conditions extractive substances lignin carbohydrates. true true false [T. Sternad] Slovenski jezik Angleški jezik Diplomsko delo 2012-10-01 19:54:59 2012-10-04 15:18:35 2022-05-04 13:23:08 2021-04-19 03:08:34 2012 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 542.9:66.094.3.098(043.2) 16711190 URN:SI:UM:DK:J1TJBZRJ UNI_Sternad_Tjasa_2012.pdf UNI_Sternad_Tjasa_2012.pdf 1 F1485192D82451CF3030B63E3A8A53BA c69337435ea87ee7277578c2e22cc727c2258001952d7409cd885ddda84290dd 8263b3ed-7c08-11eb-bb7a-00155d0001ca 20.500.12556/dkum/b9383b9e-cfcd-4178-9935-3cbe44d2524b https://dk.um.si/Dokument.php?lang=slv&id=51583 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0