Search
Now showing items 21-30 of 35
Biodiesel synthesis and kinetic analysis based on MnCO3/Na silicate as heterogeneous catalyst
(Srpsko hemijsko društvo, Beograd, 2018)
The MnCO3/Na silicate (Mn/Na/Si mole ratio of 4.65:1:1.65) catalyst in the form of solid particles with diameter of 0.99-1.99 mm was used as a catalyst for transesterification of soybean oil in batch autoclave at different ...
Crystal growth of K2TiGe3O9 in the glass / Rast kristala K2TiGe3O9 u staklu
(Serbian Chemical Society, Belgrade, 2010)
The kinetics and mechanism of isothermal crystal growth of K2TiGe3O9 from a glass of the same stoichiometric composition were studied. The crystal growth rate, U, in the range 1x10-11-1.27x10-10 m s-1 was experimentally ...
Synthesis of liposoluble carboxylic acid ascorbyl esters catalyzed by immobilized lipases / Sinteza liposolubilnih askorbil-estara karboksilnih kiselina katalizovana imobilisanim lipazama
(Univerzitet u Beogradu, Tehnološko-metalurški fakultet, 2016)
In this thesis, possibility of efficient and economical production of carboxylic acid ascorbyl esters catalyzed by immobilized lipases was examined. Vast number of lipases, acyl donors, and organic solvents was tested. ...
Enzymatic decolorization of anthraquinone dyes from wastewaters / Enzimsko obezbojavanje antrahinonskih boja iz otpadnih voda
(Univerzitet u Beogradu, Tehnološko-metalurški fakultet, 2016)
Osnovni predmet istraţivanja u okviru ove doktorske disertacije je mogućnost primene peroksidaze iz rena, komercijalnog i neprečišćenog preparata, u obezbojavanju sintetičkih, antrahinonskih boja. Strukturno, ova doktorska ...
Calcium oxide based catalysts for biodiesel production: a review
(Savez hemijskih inženjera, Beograd, 2016)
Vegetable oils are mainly esters of fatty acids and glycerol, which can be converted to fatty acid methyl esters (FAME), also known as biodiesel, by the transesterification reaction with methanol. In order to attain ...
Laboratory testing results of kinetics and processing technology of the polymetallic sulphide concentrate Blagojev Kamen - Serbia
(Association of Metallurgical Engineers of Serbia, 2016)
This work presents the laboratory testing results of kinetics the oxidation process and sample processing of the sulphide polymetallic concentrate Blagojev Kamen. The aim of investigation is recovery of these types of raw ...
Kinetics of heterogeneous methanolysis of sunflower and used vegetable oil / Kinetika heterogene metanolize svežeg i korišćenog biljnog ulja
(Univerzitet u Beogradu, Tehnološko-metalurški fakultet, 2015)
The synthesis of fatty acid methyl esters (FAME), i.e. biodiesel, in the methanolysis of triglycerides (TG) in the presence of solid catalyst was studied. Heterogeneous catalyst was synthesized by mechanochemical treatment ...
Heterogeneous kinetics of vegetable oil transesterification at high temperature
(Savez hemijskih inženjera, Beograd, 2016)
Currently, the catalytic efficiency and reusability of the solid base catalysts cannot meet the demand of industrial biodiesel production under low temperature. The purpose of this study is to define the kinetics of ...
Kinetic and Isotherm Non-Linear Study of Cr(VI) Sorption onto Amino-Modified Macroporous GMA Based Copolymer
(Skopje : Society of chemists and technologists of Macedonia, 2023)
Hexavalent chromium, Cr(VI), is one of the most notorious pollutants with
health and environmental impacts due to carcinogenic, teratogenic, and mutagenic
effects on the human organism.1 Therefore, treating wastewater ...
Pulverized river shellfish shells as a cheap adsorbent for removing of malathion from water: Examination of the isotherms, kinetics, thermodynamics and optimization of the experimental conditions by the response surface method
(University of Defence in Belgrade, 2021)
Introduction/purpose: In this study, we investigated the possibility of removing the organophosphorus pesticide malathion from water using a new adsorbent based on the biowaste of river shell shards from the Anodonta ...