Srdjan Matijasevic
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View article: THE SIGNIFICANCE OF MINING AND GEOLOGY IN THE CONCEPT OF SUSTAINABILITY
THE SIGNIFICANCE OF MINING AND GEOLOGY IN THE CONCEPT OF SUSTAINABILITY Open
The article shows the importance of mining and geology for the development of society based on sustainability principles. The uneven development of each country individually has a great impact on the level of application of sustainable tec…
View article: Phase transformations kinetics in barium titanate synthesis by mechanochemical processing
Phase transformations kinetics in barium titanate synthesis by mechanochemical processing Open
This article presents the research results on a dry mechanochemical synthesis of barium titanate at a low temperature in which the reaction model and kinetics were determined during the activation of a powder mixture of titanium dioxide an…
View article: The effect of the free energy change on crystallization in Lithium-germanate glass
The effect of the free energy change on crystallization in Lithium-germanate glass Open
This paper presents the effect of free energy change on crystallization studied by the analysis of nucleation behaviour in Lithium-germanophosphate glass with content of 8.6 Al 2O 3 (wt%). It was shown that approximation where the heat cap…
View article: Influence of sintering of kaolinite, bentonite and zeolite on structure and adsorption properties
Influence of sintering of kaolinite, bentonite and zeolite on structure and adsorption properties Open
Aluminosilicate minerals - kaolin, montmorillonite and clinoptilolite are natural, abundant and important industrial minerals. These minerals were thermally pretreated in the temperature range of 200 to 800 ?C and the changes in properties…
View article: Treatment of flue gas and coal to reduce air pollution-overview
Treatment of flue gas and coal to reduce air pollution-overview Open
This paper presents the procedures that can be used to reduce air pollution that originates from the burning of fossil fuels. Research has shown that burning coal is the largest source of emissions of greenhouse gases such as carbon dioxid…
View article: Theoretical fundamentals of mechanochemical reactions in the solid phase
Theoretical fundamentals of mechanochemical reactions in the solid phase Open
Chemical reactions in the solid phase are characterized by many specificities. The study of such reactions, with regard to the condensed state, eliminates the need to introduce many approximations that are common when considering reactions…
View article: Uranium(VI) adsorption on natural and modified clinoptilolite mineral
Uranium(VI) adsorption on natural and modified clinoptilolite mineral Open
In this paper the investigation results of adsorption of uranyl ion on unmodified and acid modified clinoptilolite are presented. Adsorption was investigated at different amounts of adsorbents in suspension, different concentrations of ura…
View article: Hydrophobized limestone as filler in polymer materials
Hydrophobized limestone as filler in polymer materials Open
The article shows changes in certain mechanical properties of polyvinyl chloride (PVC) depending on the quality of added limestone as a filler. Natural limestone and limestone hydrophobicized with stearic acid were added. Modification expe…
View article: Method of a high temperature thermal induced phase transformation of zeolite in the process of obtaining the different materials of feldspar topology
Method of a high temperature thermal induced phase transformation of zeolite in the process of obtaining the different materials of feldspar topology Open
The preparation of various aluminosilicate ceramic materials using synthetic zeolites as the precursors has been a topic of great interest during the last three decades. This method of synthesis is often called the thermal-induced transfor…
View article: Importance and fundamentals of sustainable mining
Importance and fundamentals of sustainable mining Open
This article provides a definition and analysis of sustainable mining from the aspect of impact on the wider social community. The development of modern mining, more efficient technologies that are sustainable, raising awareness of the imp…
View article: Structural stability of calcite mineral after surface modification
Structural stability of calcite mineral after surface modification Open
Calcite was modified with stearic acid in the "wet" and "dry" process. The results showed that the total hydrophobicity is achieved at a concentration of stearic acid 1.5% in the "wet" process, and 3% for "dry". Microscopic analysis is in …
View article: The effect of particle size on the crystallization LiGe2(PO4)3 phase from glass
The effect of particle size on the crystallization LiGe2(PO4)3 phase from glass Open
The glass was prepared by the standard melt-quenching technique. The crystallization of powder glass from the system Li2O-Al2O3-GeO2-P2O5 was studied. The investigations were performed under non-isothermal and isothermal conditions using t…
View article: Foam glasses made from green bottle glass and sugar beet factory lime as a foaming agent
Foam glasses made from green bottle glass and sugar beet factory lime as a foaming agent Open
Great waste production alongside limited natural resources represents huge environmental and economic problems worldwide. Sustainable waste management and industrial production can reduce pollution and gain some economic benefits. Eco-frie…
View article: Oxide powder mixture with poly-vinyl alcohol (PVA) and added polyethylene glycol (PEG) as plasticizer
Oxide powder mixture with poly-vinyl alcohol (PVA) and added polyethylene glycol (PEG) as plasticizer Open
Powder mixture consisted of ZnO, Mn2O3 (MnCO3) and Fe2O3 blended powders, was found laminating during compaction. Polyvinyl alcohol (PVA) and a combination of PVA with polyethylene glycol (PEG) added as a plasticizer, were introduced as po…
View article: The crystal growth of NASICON phase from the lithium germanium phosphate glass
The crystal growth of NASICON phase from the lithium germanium phosphate glass Open
The crystal growth rate of LiGe2(PO4)3 phase from lithium germanium-phosphate glass was studied. The glass have been homogenized using the previously established temperature-time conditions, which make it possible to remove volatile substa…
View article: The analysis of the nucleation process of the lithium germanium phosphate glass
The analysis of the nucleation process of the lithium germanium phosphate glass Open
The nucleation process of lithium germanium-phosphate glass was studied to determine the temperature range of nucleation and the temperature of the maximum nucleation rate. The differential thermal analysis (DTA), and scanning electron mic…
View article: Crystallization behaviour of Li2O·Nb2O5·SiO2 glass containing TiO2
Crystallization behaviour of Li2O·Nb2O5·SiO2 glass containing TiO2 Open
This paper deals with the crystallization of glass 30Li2O·15Nb2O5·50SiO2·5TiO2 (mol%). The crystallization behavior was studied under isothermal and non-isothermal conditions. XRD and SEM methods were employed for determination of phase co…
View article: The thermophysical properties of primary phase in lithium germanium phosphate glass
The thermophysical properties of primary phase in lithium germanium phosphate glass Open
The selected lithium germanium-phosphate glass was prepared by a conventional melt-quenching technique. The XRD method was employed to confirm the glass was obtained and to reveal crystalline phases during heat treatment. The dilatometry (…
View article: Chemical durability of sintered glass-composite prepared from glass cullet and waste foundry sand
Chemical durability of sintered glass-composite prepared from glass cullet and waste foundry sand Open
In this study, the glass-composite was prepared using glass cullet and waste foundry sand as raw materials. The powder technology route was employed. The mixtures containing 10-50 wt% of the sand were sintered at T = 750 °C for t =1h. XRD …
View article: Polyphosphate glass as fertilizer for plant seedlings
Polyphosphate glass as fertilizer for plant seedlings Open
Due to the dissolution properties the phosphate glasses can be promising materials for the development of new ecologically safe fertilizers. The complex polyphosphate glass with a molar ratio (M2O + MO)/P2O5 >1 and addition of microelement…
View article: Structure and microstructure characterization of the La2SrB10O19 glass-ceramics
Structure and microstructure characterization of the La2SrB10O19 glass-ceramics Open
The crystal structure of new lanthanum strontium borate glass-ceramics was refined by the Rietveld method. The results showed that La2SrB10O19 has the monoclinic crystal structure, space group C2 (No. 5) with a = 11.1170(6), b = 6.5667(3),…
View article: Non-isothermal crystallization of lithium germanophosphate glass studied by different kinetic methods
Non-isothermal crystallization of lithium germanophosphate glass studied by different kinetic methods Open
Crystallization kinetics of 22.5Li2O?10Al2O3?30GeO2?37.5P2O5 (mol%) glass was studied under non-isothermal condition using the differential thermal analysis (DTA). The study was performed by using the first crystallization peak temperature…
View article: Dissolution behaviour of a polyphosphate glass in simulated body fluid
Dissolution behaviour of a polyphosphate glass in simulated body fluid Open
In this work, the dissolution behavior of a polyphosphate glass, with the composition 45P2O5?3SiO2?25K2O?15CaO?10MgO?ZnO?MnO (mol %), in simulated body fluid (SBF) at a temperature of 37 ?C for different times was studied. Two powder sizes…
View article: Removal of uranium (VI) from aqueous solution by acid modified zeolites
Removal of uranium (VI) from aqueous solution by acid modified zeolites Open
The objective of this study was the review of natural zeolite, modified with acid, as a candidate material for the remediation of groundwater contaminated by uranium(VI). The modified zeolite samples were obtained by treatment of natural z…