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Prikaz rezultata 11-20 od 100
Activity coefficients of ternary aqueous solutions of electrolytes with common potassium ion at T = 298.15 K. / Koeficijenti aktivnosti u trokomponentnim vodenim rastvorima elektrolita sa zahedničkim kalijum jonom na T=298,15 K
(Univerzitet u Beogradu, Tehnološko-metalurški fakultet, 2014)
The object of this work is the study of thermodynamic properties of ternary aqueous solutions of electrolytes with common, potassium cation: {yKCl+(1-y)K2HPO4}(aq), {yKNO3+(1-y)K2HPO4}(aq), {yKBr+(1-y)K2HPO4}(aq) at ...
Liquid velocity in a three and two phase external loop airlift reactors / Brzina tečnosti u dvofaznim i trofaznim pneumatskim reaktorima sa spoljašnjom cirkulacijom
(Univerzitet u Beogradu, Tehnološko-metalurški fakultet, 2011)
In this paper, the influence of the geometry and the presence of the solid phase on the hydrodynamics of three-phase pneumatic reactor with external recirculation were theoretically and experimentally examined. Tests were ...
Synthesis and characterization of carbon materials as titanium dioxide carrier for removal of the selected organic pollutants from water / Sinteza i karakterizacija ugljeničnih materijala kao nosača titan-dioksida za uklanjanje odabranih organskih zagađujućih materijala iz vode
(Univerzitet u Beogradu, Tehnološko-metalurški fakultet, 2018)
The main objective of this work was to develope appropriate preparation method in order to obtain TiO2/carbon composites with the highest efficiency in removal of organic pollutants from the water. Carbon monolith and ...
Determination of drug residues in water by liquid chromatography – tandem mass spectrometry / Određivanje tragova lekova u vodi metodom tečne hromatografije sa tandem masenom spektrometrijom
(Univerzitet u Beogradu, Tehnološko-metalurški fakultet, 2009)
The presence of drug residues in the environment has become a subject of growing concern in the past decade. Wastewater treatment plants are not designed to remove drugs from the effluents and consequently they are released ...
Zero waste technology of juniper berry (Juniperus communis L.) processing / Bezotpadna tehnologija prerade ploda kleke (Juniperus communis L.)
(Univerzitet u Beogradu, Tehnološko-metalurški fakultet, 2016)
Essential oils are aromatic, volatile, complex mixtures of various compounds, mainly hydrocarbons (monoterpene and sesquiterpene) and oxygenated hydrocarbons. Juniper berry essential oil has wide application and high ...
Electrochemical and surface characterization of ternary alloys of the system Ag-Cu-Zn in near neutral chloride solutions. / Elektrohemijska i površinska karakterizacija trokomponentnih legura sistema Ag-Cu-Zn u blisko neutralnim hloridnim rastvorima
(Univerzitet u Beogradu, Tehnički fakultet, Bor, 2015)
Alloys of the Ag-Cu-Zn system with wide range of silver content, selected to have similar phase compositions, were the subject of the research. Metals for all examined alloys are obtained by recycling of electronic waste. ...
Catalytic and non-catalytic methanolysis of triglycerides: Reaction kinetic and process simulation / Katalizovana i nekatalizovana metanoliza triglicerida : kinetika reakcije i simulacija procesa
(Univerzitet u Beogradu, Tehnološko-metalurški fakultet, 2009)
The main obstacle for wider application of biodiesel is its relatively high cost. This is still the truth, although the price gap between petroleum based diesel fuel and biodiesel is narrowing due to the recent increase ...
The synthesis of fatty acid methyl esters from waste lard by homegeneously and heterogeneously catalyzed methanolysis / Sinteza metil estara masnih kiselina otpadne svinjske masti primenom homogeno i heterogeno katalizovane metanolize
(Univerzitet u Beogradu, Tehnološko-metalurški fakultet, 2016)
In this doctoral dissertation the methanolysis of waste lard from piglet roasting in the presence of KOH, CaO or quicklime at moderate temperatures (below the boiling point of methanol) and the molar ratio of methanol:fatty ...
Production of lactic acid and probiotic biomass on distillery stillage / Proizvodnja mlečne kiseline i probiotske biomase na destilerijskoj džibri
(Univerzitet u Beogradu, Tehnološko-metalurški fakultet, 2013)
Lactic acid is a significant chemical for food, cosmetic, pharmaceutical and chemical industry. Currently, Serbia imports lactic acid and utilization of distillery stillage, a waste water from bioethanol production, as a ...
Structure and properties of Al-Mg alloy sheets produced by accumulative roll bonding. / Struktura i svojstva višeslojnih Al-Mg traka dobijenih hladnim valjanjem
(Univerzitet u Beogradu, Tehnološko-metalurški fakultet, 2018)
Influence of accumulative roll bonding (ARB) and conventional cold rolling (CR) on the mechanical and corrosion properties of an AA5083 type alloy with 4.2 wt% Mg and a modified alloy with 5.1 wt% Mg and addition of 0.5 ...