Jaroslav Briančin
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View article: Possibilities of Obtaining Zinc from Steel Making Wastes and Galvanizing Using Microwave Energy
Possibilities of Obtaining Zinc from Steel Making Wastes and Galvanizing Using Microwave Energy Open
The presented article focuses on the possibilities of using microwave energy in the treatment of flue dust originating from the production of steel in EAF, as well as flue dust arising in the hot-dip galvanizing process of steel. The menti…
View article: Finite Element Model Updating of Axisymmetric Structures
Finite Element Model Updating of Axisymmetric Structures Open
Creating the most accurate numerical models with the same dynamic behavior as real structures plays an important role in the development process of various facilities. This article deals with the use of experimental methods, particularly e…
View article: Effects of Microwave Energy and MnO2 from Deep-Sea Polymetallic Nodules as an Oxidizing Agent on the Leaching of Chalcopyrite Concentrate
Effects of Microwave Energy and MnO2 from Deep-Sea Polymetallic Nodules as an Oxidizing Agent on the Leaching of Chalcopyrite Concentrate Open
The mineral chalcopyrite (CuFeS2) is inherently resistant to conventional leaching techniques, necessitating the intensification of the leaching process to achieve efficient metal recovery. Microwave-assisted leaching, combined with the ap…
View article: Iron complexes with sulphate anion or ligand, their thermal behavior and magnetic properties
Iron complexes with sulphate anion or ligand, their thermal behavior and magnetic properties Open
Reactions of ferrous or ferric sulphates with the chelating diamine ligands bpy (2,2'-bipyridine) and phen (1,10-phenanthroline) in methanol/water solution yielded two new complexes, a green Fe(III) complex [Fe2(bpy)2…
View article: Bioleaching of Tetrahedrite by Iron- and Sulfur-Oxidizing Bacteria
Bioleaching of Tetrahedrite by Iron- and Sulfur-Oxidizing Bacteria Open
This study describes the bioleaching of a flotation concentrate by acidophilic iron- and sulfur-oxidizing bacteria at ambient temperature in shake flasks. The concentrate was prepared from polymetallic Ag–Cu–Sb–siderite ores from Rožňava (…
View article: Structural Diversity of Iron Complexes Based on Chelating 5,5′‐dimethyl‐2,2′‐bipyridine Ligand
Structural Diversity of Iron Complexes Based on Chelating 5,5′‐dimethyl‐2,2′‐bipyridine Ligand Open
Using different synthetic procedures, four complexes [Fe 2 Cl 4 ( 5dmbpy ) 2 ] ( 1 ), [Fe( acac )Cl 2 ( 5dmbpy )] ( 2 ), [Fe( 5dmbpy ) 3 ][Fe 2 Cl 6 O] ( 3 ), and [Fe( 5dmbpy ) 3 ][Fe 2 Cl 6 O]·CH 3 CN ( 4 ) ( 5dmbpy is 5,5′‐dimethyl‐2,2′‐…
View article: Slovak dolomite as a raw material source for metal magnesium production
Slovak dolomite as a raw material source for metal magnesium production Open
In order to ensure within the EU, preferably, self-sufficiency, a stable supply of the essential mineral raw materials required for industry led to the establishment of the European Raw Materials Alliance (ERMA). One of the key objectives …
View article: Improvement of Sorption Capacity and Applicability of Biosorbent by Immobilization
Improvement of Sorption Capacity and Applicability of Biosorbent by Immobilization Open
The water contamination by toxic metal ions is a worldwide environmental problem. High concentrations are hazardous for all living organisms, causing many disorders and diseases and ecological damages to the surroundings. Biosorption is an…
View article: Alternative Approach to Selected Metals Removal/Recovery from Mine Waters Flowing from the Flooded Siderite Mine Nižná Slaná
Alternative Approach to Selected Metals Removal/Recovery from Mine Waters Flowing from the Flooded Siderite Mine Nižná Slaná Open
The objective of this work was the application of innovative method for metals recovery from metalliferous mine water released from the flooded siderite ore deposit Nižná Slaná. Although the metals contained in mine drainage are considered…
View article: The Influence of Dielectric Properties on Heating of Sulphide Ores in Electromagnetic Field
The Influence of Dielectric Properties on Heating of Sulphide Ores in Electromagnetic Field Open
Microwave heating is a form of high - frequency electromagnetic radiation. The heating of primary and secondary mineral raw materials in the microwave field depends primarily on their dielectric and thermal properties. The condition is the…
View article: Transport properties of mechanochemically synthesized copper (I) selenide for potential applications in energy conversion and storage
Transport properties of mechanochemically synthesized copper (I) selenide for potential applications in energy conversion and storage Open
This work studied the thermal stability, electrical, and thermoelectrical properties of copper(I) selenide, Cu 2 Se synthesized by high-energy milling in a planetary ball mill. The phase composition was investigated by X-ray powder diffrac…
View article: Optical and Optoelectrical Properties of Ternary Chalcogenide CuInS2/TiO2 Nanocomposite Prepared by Mechanochemical Synthesis
Optical and Optoelectrical Properties of Ternary Chalcogenide CuInS2/TiO2 Nanocomposite Prepared by Mechanochemical Synthesis Open
In this work, a nanocomposite consisting of ternary chalcogenide CuInS2 and TiO2 was prepared and its optical and optoelectrical properties were investigated. The CuInS2/TiO2 nanocomposite was produced via one-step mechanochemical synthesi…
View article: Experimental Study of a Representative Sample to Determine the Chemical Composition of Cast Iron
Experimental Study of a Representative Sample to Determine the Chemical Composition of Cast Iron Open
In metallurgical practice, the material is considered of adequate quality if it meets the customer’s expectations. It is necessary to take representative samples and perform quality testing to avoid financial and intangible losses. Sample …
View article: Advanced Photodegradation of Azo Dye Methyl Orange Using H2O2-Activated Fe3O4@SiO2@ZnO Composite under UV Treatment
Advanced Photodegradation of Azo Dye Methyl Orange Using H2O2-Activated Fe3O4@SiO2@ZnO Composite under UV Treatment Open
The Fe3O4@SiO2@ZnO composite was synthesized via the simultaneous deposition of SiO2 and ZnO onto pre-prepared Fe3O4 nanoparticles. Physicochemical methods (TEM, EDXS, XRD, SEM, FTIR, PL, zeta potential measurements, and low-temperature ni…
View article: Characterization of ochre precipitate loaded with arsenic from mine water and study of its stability by using of leaching tests and sequential extraction analysis
Characterization of ochre precipitate loaded with arsenic from mine water and study of its stability by using of leaching tests and sequential extraction analysis Open
This study is focused on the mobility of potential toxic elements release from the ochre precipitate sample after the leaching by using selected methods. The sequential extraction method was performed to characterize the stability of the s…
View article: Laboratory technological research of magnesium intermediates preparation from the dolomites raw materials suitable for magnesium metal production
Laboratory technological research of magnesium intermediates preparation from the dolomites raw materials suitable for magnesium metal production Open
Metallic magnesium has been included in the list of Critical Mineral Raw Materials (CRM) for European Union countries since 2010. The territory of the Slovak Republic has large reserves of mineral raw materials – magnesite and dolomite, wh…
View article: A Comprehensive View of the Optimization of Chromium (VI) Processing through the Application of Electrocoagulation Using a Pair of Steel Electrodes
A Comprehensive View of the Optimization of Chromium (VI) Processing through the Application of Electrocoagulation Using a Pair of Steel Electrodes Open
In the presented article, an electrocoagulation method using a steel cathode and a steel anode was used to obtain chromium from laboratory-prepared model solutions with known compositions. The study aimed to analyze the effect of solution …
View article: Regenerative Potential of Hydroxyapatite-Based Ceramic Biomaterial on Mandibular Cortical Bone: An In Vivo Study
Regenerative Potential of Hydroxyapatite-Based Ceramic Biomaterial on Mandibular Cortical Bone: An In Vivo Study Open
Reconstruction of bone defects and maintaining the continuity of the mandible is still a challenge in the maxillofacial surgery. Nowadays, the biomedical research within bone defect treatment is focussed on the therapy of using innovative …
View article: Long-Bone-Regeneration Process in a Sheep Animal Model, Using Hydroxyapatite Ceramics Prepared by Tape-Casting Method
Long-Bone-Regeneration Process in a Sheep Animal Model, Using Hydroxyapatite Ceramics Prepared by Tape-Casting Method Open
This study was designed to investigate the effects of hydroxyapatite (HA) ceramic implants (HA cylinders, perforated HA plates, and nonperforated HA plates) on the healing of bone defects, addressing biocompatibility, biodegradability, ost…
View article: Theoretical and Practical Evaluation of the Feasibility of Zinc Evaporation from the Bottom Zinc Dross as a Valuable Secondary Material
Theoretical and Practical Evaluation of the Feasibility of Zinc Evaporation from the Bottom Zinc Dross as a Valuable Secondary Material Open
This study presents a theoretical and practical evaluation of zinc evaporation from bottom zinc dross (hard zinc) as a secondary zinc source (zinc content approximately 94–97%), which originates in the batch hot-dip galvanizing process. Th…
View article: Properties of CuFeS2/TiO2 Nanocomposite Prepared by Mechanochemical Synthesis
Properties of CuFeS2/TiO2 Nanocomposite Prepared by Mechanochemical Synthesis Open
CuFeS2/TiO2 nanocomposite has been prepared by a simple, low-cost mechanochemical route to assess its visible-light-driven photocatalytic efficiency in Methyl Orange azo dye decolorization. The structural and microstructural characterizati…
View article: Mechanochemical Synthesis of Nickel Mono- and Diselenide: Characterization and Electrical and Optical Properties
Mechanochemical Synthesis of Nickel Mono- and Diselenide: Characterization and Electrical and Optical Properties Open
Nickel mono- (NiSe) and diselenide (NiSe2) were produced from stoichiometric mixtures of powdered Ni and Se precursors by the one-step, undemanding mechanochemical reactions. The process was carried out by high-energy milling for 30 and 12…
View article: Experimental study of As elimination from the pit water in locality Zlatá Idka-Rieka, Slovakia and characterization of sediment in this locality
Experimental study of As elimination from the pit water in locality Zlatá Idka-Rieka, Slovakia and characterization of sediment in this locality Open
The study presents introductory laboratory and in-situ experiments focused on elimination of As from the pit water in locality Zlatá Idka-Rieka, Slovakia, as well as on characterization of the sediment parameters in this locality from the …
View article: Hydrometallurgical Treatment of Converter Dust from Secondary Copper Production: A Study of the Lead Cementation from Acetate Solution
Hydrometallurgical Treatment of Converter Dust from Secondary Copper Production: A Study of the Lead Cementation from Acetate Solution Open
The subject of interest in this study was lead cementation with zinc from solution after conventional agitate acidic leaching of converter dust from secondary copper production. The kinetics of lead cementation from an acid solution of lea…
View article: CCDC 2010637: Experimental Crystal Structure Determination
CCDC 2010637: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Recovery of Chromium from Slags Leachates by Electrocoagulation and Solid Product Characterization
Recovery of Chromium from Slags Leachates by Electrocoagulation and Solid Product Characterization Open
Slags produced in the steelmaking industry could be a source of chromium. Slags contain, depending on different types of slags, between 2 to 5 wt.% of Cr. Roasting of slag with NaOH, followed by subsequent leaching can produce leachates wh…
View article: Comparative Study of Nanostructured CuSe Semiconductor Synthesized in a Planetary and Vibratory Mill
Comparative Study of Nanostructured CuSe Semiconductor Synthesized in a Planetary and Vibratory Mill Open
Copper(II) selenide, CuSe was prepared from Cu and Se powders in a stoichiometric ratio by a rapid, and convenient one-step mechanochemical synthesis, after 5 and 10 min of milling in a planetary, and an industrial vibratory, mill. The kin…
View article: Engineered biochar as a tool for nitrogen pollutants removal: preparation, characterization and sorption study
Engineered biochar as a tool for nitrogen pollutants removal: preparation, characterization and sorption study Open
View article: Environmental Pollution Monitoring by Thin Metal Electrodes Prepared by Physical Vapor Deposition
Environmental Pollution Monitoring by Thin Metal Electrodes Prepared by Physical Vapor Deposition Open
This work is focused on environmental pollution monitoring utilizing thin metal electrodes on glassy/ceramic substrates prepared by physical vapour deposition. Besides others, it is well known that environmental pollution on electrical ins…
View article: Crystal Structure and Magnetocaloric Effect of La<sub>0.80</sub>Ag<sub>0.15</sub>MnO<sub>3</sub> Nanoparticles
Crystal Structure and Magnetocaloric Effect of La<sub>0.80</sub>Ag<sub>0.15</sub>MnO<sub>3</sub> Nanoparticles Open
Annealing of_ non stoichiometric La0.80Ag0.15MnO3 nanoparticles leads to the change of the crystal symmetry from Pnma to R3c and to almost doubling of its Curie temperature from 117 K to 317 K. This effect is due to the releasing of lattic…