Претраживање
Приказ резултата 31-40 од 99
Selected trace element concentrations in ambient air and in horse chestnut leaves in Belgrade / Koncentracije odabranih elemenata u tragovima u vazduhu i u listovima divljeg kestena u Beogradu
(Association of the Chemical Engineers of Serbia, 2015)
In this study, airborne particulates (PM10) and leaves of horse chestnut were collected at selected urban sites in Belgrade, Serbia, in years 2006, 2009 and 2012. All samples were analysed for trace element concentrations ...
Influence of some sol-gel synthesis parameters of mesoporous tio2 on photocatalytic degradation of pollutants
(Savez hemijskih inženjera, Beograd, 2016)
Titanium dioxide (TiO2) nanopowders were produced by sol-gel technique from tetrabutyl titanate as a precursor by varying some parameters of the sol-gel synthesis, such as temperature (500 and 550 degrees C) and the duration ...
High temperature transesterification of soybean oil with methanol using manganese carbonate as catalyst
(Savez hemijskih inženjera, Beograd, 2018)
The manganese carbonate catalyst, prepared by precipitation method, was used in transesterification of soybean oil under subcritical condition of methanol. Catalyst samples were characterized by X-ray diffraction (XRD), ...
Cfd analysis and flow model reduction for surfactant production in helix reactor
(Savez hemijskih inženjera, Beograd, 2015)
Flow pattern analysis in a spiral Helix reactor is conducted, for the application in commercial surfactant production. Step change response curves (SCR) were obtained from numerical tracer experiments by three-dimensional ...
Continuous improvement concepts as a link between quality assurance and implementation of cleaner production - case study in the generic pharmaceutical industry
(Savez hemijskih inženjera, Beograd, 2016)
The subject and the research objective presented in this article is establishing of the relationship between quality assurance and implementation of cleaner production in the generic pharmaceutical industry through the ...
Friction factor for water flow through packed beds of spherical and non-spherical particles
(Savez hemijskih inženjera, Beograd, 2017)
The aim of this work was the experimental evaluation of different friction factor correlations for water flow through packed beds of spherical and non-spherical particles at ambient temperature. The experiments were performed ...
A study of photocatalytic degradation of methomyl and its commercial product lannate-90
(Savez hemijskih inženjera, Beograd, 2020)
Photocatalytic degradation of the carbamate insecticide methomyl and its commercial product Lannate-90 in aqueous suspension of TiO2 and ZnO using an Osram ultra-vitalux lamp (315-400 nm) was investigated. The objective ...
Pressure drop in packed beds of spherical particles at ambient and elevated air temperatures / Pad pritiska u pakovanom sloju sferičnih čestica na sobnoj i povišenim temperaturama
(Association of the Chemical Engineers of Serbia, 2015)
The aim of this work was the experimental investigation of the particle friction factor for air flow through a packed bed of particles at ambient and elevated temperatures. The experiments were performed by measuring the ...
Degradation of nicosulfuron using fenton and fenton-like reactions
(Savez hemijskih inženjera, Beograd, 2018)
Nicosulfuron, a sulfonylurea herbicide, was subjected to different Fenton reactions at pH of a nicosulfuron aqueous solution (pH 5). Usually, the optimal pH for the Fenton reaction is between 3 and 4, but the addition of ...
Liquid chromatography and liquid chromatography-mass spectrometry analysis of donepezil degradation products / Analiza degradacionih proizvoda donepezila primenom tečne hromatografije i tečne hromatografije-masene spektrometrije
(Association of the Chemical Engineers of Serbia, 2015)
This study describes the investigation of degradation products of donepezil (DP) using a stability-indicating RP-HPLC method for determination of donepezil, which is a centrally acting reversible acetyl cholinesterase ...