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Prikaz rezultata 21-30 od 46
Sorption of textile dyes from textile wastewater by chitosan-based hydrogel / Sorpcija boja za tekstil iz tekstilnih otpadnih voda pomoću hidrogela na bazi hitozana
(Savez inženjera i tehničara Srbije, Beograd, 2018)
With the excessive risks that are present in today's environment, it is of great importance to treat wastewaters before their discharge in water streams. One of the everyday challenges is design of a low-cost and environmentally ...
The impact of wood fiber surface modification on physical properties of wood-polymer composites / Uticaj modifikacije površine vlakana drveta na mehanička svojstva kompozita polimer-drvo
(Savez inženjera i tehničara Srbije, Beograd, 2016)
In this paper, the impact of wood fiber surface modification on mechanical properties of poly-(methyl methacrylate)(PMMA)-wood composite was examined. FTIR analysis has shown that the wood fiber surface modification was ...
Application of alumosilicate polymers based on metakaolin in adsorption of cadmium ions from wastewater / Primena alumosilikatnih polimera na bazi metakaolina u adsorpciji jona kadmijuma iz otpadnih voda
(Savez inženjera i tehničara Srbije, Beograd, 2018)
Alumosilicate polymers (geopolymers) based on metakaolin as precursor and alkaline activators of different concentrations (2M, 4M, 6M and 8M NaOH/Na2SiO3) were used to remove ions of cadmium from wastewater. Experiments ...
Antimicrobial hydrogels based on 2-hydroxyethyl methacrylate and itaconic acid containing silver(I) ion / Antimikrobni hidrogelovi na bazi 2-hidroksietil metakrilata i itakonske kiseline koji sadrže srebro(I) jon
(Savez inženjera i tehničara Srbije, Beograd, 2014)
The objective of our study was to develop new antimicrobial hydrogels silver/poly(2-hydroxyethyl methacrylate/ itaconic acid) (Ag/P(HEMA/IA)). The P(HEMA/IA) samples, with different HEMA/IA ratio, were prepared by free ...
Formic acid electrooxidation on carbon supported platinum catalyst with preferential plane orientation / Oksidacija mravlje kiseline na platinskim katalizatorima na ugljeničnom nosaču sa preferencijalno orijentisanim ravnima
(Savez inženjera i tehničara Srbije, Beograd, 2015)
Pt-based nanocatalysts supported on Vulcan XC-72R carbon, were prepared by water-in-oil microemulsion method, with addition of various amounts of HCl in the water phase. Polyethileneglycoldodecylether (BRIJ 30) was used ...
Optimization of chitosan gel preparation for supercritical impregnation of thymol / Uticaj pripreme hitozan gelova na natkritičnu impregnaciju sa timolom
(Savez inženjera i tehničara Srbije, Beograd, 2015)
The impregnation of differently prepared chitosan gels with thymol using supercritical carbon dioxide (scCO2) was studied in order to obtain new materials with added value without the use of organic solvents. The optimum ...
Analysis of catalyst wetting efficiency influence on performances of industrial TBR for hydro desulfurization and hydro de aromatization reactions / Analiza uticaja ovlaženosti katalizatora u industrijskom TBR reaktoru na reakcije hidrodesulfurizacije i hidrodearomatizacije
(Savez inženjera i tehničara Srbije, Beograd, 2015)
Many industrial scale trickle bed reactors (TBR) operate at lower liquid superficial velocities ( lt 0.5 cm/s) at which the catalyst particle are not completely wetted. This phenomenon of incomplete wetting has therefore ...
Metallurgical processing of copper secondary raw materials / Metalurška prerada sekundarnih sirovina bakra
(Savez inženjera i tehničara Srbije, Beograd, 2015)
Procedures for copper secondary raw materials processing include two basic stages: pretreatment of the copper waste and its further metallurgical processing. For copper waste pretreatment technology, there are different ...
Following the ecological and economic effects of mining and metallurgical landfills / Prateći ekološko-ekonomski efekti metalurških i rudarskih deponija
(Savez inženjera i tehničara Srbije, Beograd, 2012)
In the process of refining raw materials and metal production in the metallurgical industry and mining are allocated a number of different secondary materials to be deposited. In the enrichment of the ore by flotation, in ...
Impact testing with controlled energy of multiaxial aramid fabrics with various types of reinforcement / Ispitivanje udarima kontrolisane energije multiaksijalnih aramidnih lamina sa različitim tipovima ojačanja
(Savez inženjera i tehničara Srbije, Beograd, 2015)
The physical and mechanical properties of the six samples of polyurethane/p-aramid multiaxial fabric forms (Kolon fabrics) were analyzed by high speed impact tester. The samples were impregnated with 10 wt.% poly (vinyl ...