Zobrazeno 1 - 10
of 259
pro vyhledávání: '"Stamenković Olivera"'
Autor:
Miladinović Marija R., Pavlović Stefan, Banković-Ilić Ivana B., Kostić Milan D., Stamenković Olivera S., Veljković Vlada B.
Publikováno v:
Hemijska Industrija, Vol 77, Iss 1, Pp 39-52 (2023)
Possibilities of using waste plum stones in biodiesel production were investigated. The plum kernels were used as a source to obtain oil by the Soxhlet extraction method, while the whole plum stones, the plum stone shells that remained after the c
Externí odkaz:
https://doaj.org/article/0534a4f495dd4b9e9c415e013f693fe1
Autor:
Tasić Marija B., Stanković Miona S., Kostić Milan D., Stamenković Olivera S., Veljković Vlada B.
Publikováno v:
Chemical Industry and Chemical Engineering Quarterly, Vol 28, Iss 3, Pp 237-245 (2022)
Apple pomace is a solid waste derived from the apple processing industry. To foster sustainability, the apple processing industry must implement the circular economy model of biorefinery and treat apple pomace as a valuable source of apple seed oil.
Externí odkaz:
https://doaj.org/article/47c786ba9ef441189a8be3e3cf2eda8f
Autor:
Veličković Ana, Avramović Jelena, Kostić Milan, Krstić Jugoslav B., Stamenković Olivera, Veljković Vlada B.
Publikováno v:
Hemijska Industrija, Vol 75, Iss 5, Pp 257-276 (2021)
Wheat straw ash (WSA) was investigated as a new catalyst in biodiesel production from sunflower oil. The catalyst was characterized by temperature-programmed decomposition, X- ray powder diffraction, Hg porosimetry, N2 physisorption, and scanning
Externí odkaz:
https://doaj.org/article/8fd9984848cd459fbfe6863aece3745b
Autor:
Đokić-Stojanović Dušica R., Todorović Zoran B., Troter Dragan Z., Stamenković Olivera S., Veselinović Ljiljana M., Zdujić Miodrag V., Manojlović Dragan D., Veljković Vlada B.
Publikováno v:
Journal of the Serbian Chemical Society, Vol 84, Iss 3, Pp 253-265 (2019)
Ten organic solvents (triethanolamine, diethanolamine, ethylene glycol, methyl ethyl ketone, n-hexane, triethylamine, ethylene glycol dimethyl ether, glycerol, tetrahydrofuran and dioxane) were applied as cosolvents in the CaO-catalyzed ethanolysis o
Externí odkaz:
https://doaj.org/article/cc70877fcc35416890b590ce70aa01e4
Autor:
Đokić-Stojanović Dušica R., Todorović Zoran B., Troter Dragan Z., Stamenković Olivera S., Veselinović Ljiljana M., Zdujić Miodrag V., Manojlović Dragan D., Veljković Vlada B.
Publikováno v:
Hemijska Industrija, Vol 73, Iss 6, Pp 351-362 (2019)
Triethanolamine was applied as an efficient „green“ cosolvent for biodiesel production by CaO-catalyzed ethanolysis of sunflower oil. The reaction was conducted in a batch stirred reactor and optimized with respect to the reaction temperature (61
Externí odkaz:
https://doaj.org/article/8388c5614b924b0b803f246be2907856
Autor:
Kostić Milan D., Tasić Marija B., Đalović Ivica G., Biberdžić Milan O., Mitrović Petar M., Stamenković Olivera S., Veljković Vlada B.
Publikováno v:
Reciklaža i Održivi Razvoj, Vol 11, Iss 1, Pp 53-62 (2018)
The use of low-cost or priceless feedstocks such as byproducts in biodiesel production results in a reduced overall process costs. The present paper reports the use of corn germs and corn cobs as byproducts from corn-based starch production in the bi
Externí odkaz:
https://doaj.org/article/317c78d242904c2bb7242e780557d891
Autor:
Cvetković Bojan S., Cvetković Ivana I., Kojčin Admir N., Trzin Dragan B., Banković-Ilić Ivana B., Stamenković Olivera S., Veljković Vlada B.
Publikováno v:
Reciklaža i Održivi Razvoj, Vol 9, Iss 1, Pp 28-46 (2016)
Biodiesel, a diesel fuel alternative, is produced from vegetable oils and animal fats by the transesterification reaction of triacylglycerols and lower aliphatic alcohols. Beside number advantages related to fossil fuels, the main barrier to biodiese
Externí odkaz:
https://doaj.org/article/78f2bacb6e26423fbae6220f6378724f
Publikováno v:
Chemical Industry and Chemical Engineering Quarterly, Vol 22, Iss 4, Pp 409-418 (2016)
The ethanolysis of sunflower oil catalyzed by calcium oxide was studied in wider ranges of the reaction conditions: temperature 65-75°C, ethanol-to-oil molar ratio 6:1-18:1 and catalyst loading 10-20% in order to determine the reaction kinetics.
Externí odkaz:
https://doaj.org/article/68eded0b287b4d0c832809a1b4b6900b
Further study on kinetic modeling of sunflower oil methanolysis catalyzed by calcium-based catalysts
Autor:
Miladinović Marija R., Tasić Marija B., Stamenković Olivera S., Veljković Vlada B., Skala Dejan U.
Publikováno v:
Chemical Industry and Chemical Engineering Quarterly, Vol 22, Iss 2, Pp 137-144 (2016)
The kinetic model, which was originally developed for sunflower oil methanolysis catalyzed by CaO.ZnO, was examined for several other calcium-based catalysts like neat CaO, quicklime and Ca(OH)2. This model including triacylglycerols mass transfer
Externí odkaz:
https://doaj.org/article/619fc1ec10a74b37a5616a5783bd2eb6
Autor:
Avramović Jelena M., Stamenković Olivera S., Todorović Zoran B., Lazić Miodrag L., Veljković Vlada B.
Publikováno v:
Chemical Industry and Chemical Engineering Quarterly, Vol 18, Iss 1, Pp 115-127 (2012)
The ultrasound-assisted sunflower oil methanolysis catalyzed by KOH was studied to define a simple empirical kinetic model useful for reactor design without complex computation. It was assumed that the neutralization of free fatty acids and the sapon
Externí odkaz:
https://doaj.org/article/b369a616033f44cfabeb76a26e1ad805