| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

Show document Help

Title:ŠTUDIJ VPLIVA PROCESNIH POGOJEV NA HIDROTERMIČNE REAKCIJE ODPADNE BIOMASE PRI PREDELAVI OLIV S TAGUCHI METODO
Authors:ID Sternad, Tjaša (Author)
ID Škerget, Mojca (Mentor) More about this mentor... New window
ID Knez, Željko (Comentor)
Files:.pdf UNI_Sternad_Tjasa_2012.pdf (2,16 MB)
MD5: F1485192D82451CF3030B63E3A8A53BA
PID: 20.500.12556/dkum/b9383b9e-cfcd-4178-9935-3cbe44d2524b
 
Language:Slovenian
Work type:Undergraduate thesis
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract: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.
Keywords: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.
Place of publishing:Maribor
Publisher:[T. Sternad]
Year of publishing:2012
PID:20.500.12556/DKUM-38551 New window
UDC:542.9:66.094.3.098(043.2)
COBISS.SI-ID:16711190 New window
NUK URN:URN:SI:UM:DK:J1TJBZRJ
Publication date in DKUM:04.10.2012
Views:2346
Downloads:242
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
:
Copy citation
  
Average score:(0 votes)
Your score:Voting is allowed only for logged in users.
Share:Bookmark and Share


Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Secondary language

Language:English
Title:INFLUENCE OF PROCESS PARAMETERS ON HYDROTHERMAL REACTIONS OF WASTE BIOMASS FROM OLIVE OIL PRODUCTION WITH TAGUCHI METHOD
Abstract: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.
Keywords:olive biomass, hydrothermal reaction, subcritical water, efficiency, total phenols, total flavonoids, tannins, antioxidant activity, Taguchi method, process parameters, optimal conditions, extractive substances, lignin, carbohydrates.


Comments

Leave comment

You must log in to leave a comment.

Comments (0)
0 - 0 / 0
 
There are no comments!

Back
Logos of partners University of Maribor University of Ljubljana University of Primorska University of Nova Gorica