Zobrazeno 1 - 10
of 22
pro vyhledávání: '"VLADA VELJKOVIC"'
Publikováno v:
Journal of the Serbian Chemical Society, Vol 72, Iss 8-9, Pp 847-855 (2007)
Ozone absorption in water was investigated in a mechanically stirred reactor, using both the semi-batch and continuous mode of operation. A model for the precise determination of the volumetric mass transfer coefficient in open tanks without the nece
Externí odkaz:
https://doaj.org/article/1a4393aa3d1a4bf6ba5e2a4561db8bf3
Autor:
Marija Miladinovic, Stefan Pavlovic, Ivana Bankovic-Ilic, Milan Kostic, Olivera Stamenkovic, Vlada Veljkovic
Publikováno v:
Chemical Industry. 77:39-52
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 cras
Autor:
Zoran Todorovic, Biljana Djordevic, Dragan Troter, Ljiljana Veselinovic, Miodrag Zdujic, Vlada Veljkovic
Publikováno v:
Chemical Industry. 77:53-67
Deep eutectic solvents (DESs) are called 'designer solvents' due to various structural variations and the benefit of tailoring their physicochemical properties. For industrial applications of DESs it is crucial to know their physical and thermodynami
Publikováno v:
Chemical Industry and Chemical Engineering Quarterly. 28:237-245
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.
Autor:
Marija Miladinovic, Milica Petkovic, Ivana Bankovic-Ilic, Sandra Konstantinovic, Vlada Veljkovic
Publikováno v:
Chemical Industry. 76:75-85
Oil methanolysis over modified CaO catalysts was studied to assess the catalytic performance and to define an appropriate kinetic model. CaO was modified by commercial glycerol and a deep eutectic solvent (DES), choline chloride : glycerol (ChCl : Gl
Autor:
Milan D. Kostić, Ana V. Veličković, Olivera S. Stamenković, Jelena M. Avramović, B Vlada Veljkovic, B Jugoslav Krstic
Publikováno v:
Hemijska Industrija, Vol 75, Iss 5, Pp 257-276 (2021)
Hemijska industrija
Hemijska industrija
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 elec
Autor:
T Ivana Karabegovic, Z Dragan Troter, R Bojana Danilovic, G Natalija Djordjevic, S Dragisa Savic, B Vlada Veljkovic
Publikováno v:
Chemical Industry and Chemical Engineering Quarterly, Vol 27, Iss 4, Pp 313-317 (2021)
In recent years, many researchers have focused on microalgae as a potential source of lipids for various purposes. To improve the lipid yield, different biomass pretreatments have been investigated. The aim of this work was to determine the effect of
Autor:
B Marija Tasic, M Petar Mitrović, O Milan Biberdžić, G Ivica Đalović, D Milan Kostic, S Olivera Stamenkovic, B Vlada Veljkovic
Publikováno v:
Reciklaža i Održivi Razvoj, Vol 11, Iss 1, Pp 53-62 (2018)
Recycling and Sustainable Development (2018) 11(1):53-62
Recycling & Sustainable Development
Recycling and Sustainable Development (2018) 11(1):53-62
Recycling & Sustainable Development
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
Autor:
Z Milica Zlatkovic, Sandra S. Konstantinović, T Jovan Ciric, B Slavica Ilic, B Vlada Veljkovic, D Gordana Gojgic-Cvijovic
Publikováno v:
Hemijska Industrija, Vol 71, Iss 6, Pp 487-494 (2017)
Hemijska industrija
Hemijska industrija
In the present work, four derivatives of salicylaldehyde (salicylaldehyde-hydrazone, phenylhydrazone, semicarbazone and thiosemicarbazone) were synthesized using both conventional (95% ethanol) and green (crude glycerol from biodiesel production) sol
Autor:
B Vlada Veljkovic, Sandra S. Konstantinović, S Dragisa Savic, T Jovan Ciric, B Slavica Ilic, R Bojana Danilovic
Publikováno v:
Chemical Industry and Chemical Engineering Quarterly, Vol 22, Iss 4, Pp 461-489 (2016)
The increased production of biodiesel as an alternative fuel involves the simultaneous growth in production of crude glycerol as its main by-product. Therefore, the feasibility and sustainability of biodiesel production requires the effective utiliza