Peter Matúš
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Evaluation of fungal-induced structural changes in arsenic- and antimony-contaminated mine drainage ochreous sediments using radioanalytical techniques Open
Biotransformation of ochres, a material crucial in immobilizing toxic elements, such as arsenic and antimony, found in mine effluents is investigated by Mössbauer spectrometry. Incubation of ochreous sediments was performed with the fungus…
Iodine Accumulation and Distribution in Carrots (Daucus carota L.) Open
Iodine is a critical trace element necessary for human and animal health owing to its role in thyroid hormone synthesis. Despite its importance, iodine deficiency remains a global health concern. Traditional methods to address this issue, …
Comparative Study of Water and Milk Kefir Grains as Biopolymeric Adsorbents for Copper(II) and Arsenic(V) Removal from Aqueous Solutions Open
This study investigates the biosorption capabilities of kefir grains, a polysaccharide-based byproduct of the fermentation process, for removing copper(II) and arsenic(V) from contaminated water. Unlike traditional heavy-metal removal meth…
Microbial-induced structural changes in non-stoichiometric magnetite via radioanalytical methods Open
Structural alterations in non-stoichiometric magnetite induced by microorganisms are studied by nuclear methods. Magnetite samples were exposed to fungal strain known for its immobilization capabilities. Neutron activation analysis identif…
Layered Double Hydroxides as Next-Generation Adsorbents for the Removal of Selenium from Water Open
This research paper provides a comprehensive overview of the use of layered double hydroxides (LDH) in the removal of selenium species from contaminated water sources. Key studies on sorption mechanisms and the impact of competing ions on …
Microbial involvement in iodine cycle: mechanisms and potential applications Open
Stable iodine isotopes are essential for humans as they are necessary for producing thyroid gland hormones. However, there are hazardous radioactive iodine isotopes that are emitted into the environment through radioactive waste generated …
Review on Performance of Aspergillus and Penicillium Species in Biodegradation of Organochlorine and Organophosphorus Pesticides Open
The use of pesticides in agricultural practices raises concerns considering the toxic effects they generate in the environment; thus, their sustainable application in crop production remains a challenge. One of the frequently addressed iss…
Involvement of Bacterial and Fungal Extracellular Products in Transformation of Manganese-Bearing Minerals and Its Environmental Impact Open
Manganese oxides are considered an essential component of natural geochemical barriers due to their redox and sorptive reactivity towards essential and potentially toxic trace elements. Despite the perception that they are in a relatively …
Solid–Water Interface Interaction of Selenium with Fe(II)-Bearing Minerals and Aqueous Fe(II) and S(-II) Ions in the Near-Field of the Radioactive Waste Disposal System Open
Selenium can be highly toxic in excess for both animals and humans. However, since its mobile forms can be easily adsorbed with ferric minerals, its mobility in the natural oxic environment is generally not an issue. Still, the removal and…
Prospects of Biogenic Xanthan and Gellan in Removal of Heavy Metals from Contaminated Waters Open
Biosorption is considered an effective technique for the treatment of heavy-metal-bearing wastewaters. In recent years, various biogenic products, including native and functionalized biopolymers, have been successfully employed in technolo…
Role of Exopolysaccharides of Pseudomonas in Heavy Metal Removal and Other Remediation Strategies Open
Pseudomonas biofilms have been studied intensively for several decades and research outcomes have been successfully implemented in various medical and agricultural applications. Research on biofilm synthesis and composition has also overla…
Iodine Fractions in Soil and Their Determination Open
Iodine is an essential micronutrient for most living beings, including humans. Despite efforts through various iodine deficiency disorders elimination programs, such as salt iodization, this problem still persists. Sub-clinical deficiencie…
Fungal Mobilization of Selenium in the Presence of Hausmannite and Ferric Oxyhydroxides Open
Bioleaching of mineral phases plays a crucial role in the mobility and availability of various elements, including selenium. Therefore, the leachability of selenium associated with the surfaces of ferric and manganese oxides and oxyhydroxi…
Bioleaching of Manganese Oxides at Different Oxidation States by Filamentous Fungus Aspergillus niger Open
This work aimed to examine the bioleaching of manganese oxides at various oxidation states (MnO, MnO·Mn2O3, Mn2O3 and MnO2) by a strain of the filamentous fungus Aspergillus niger, a frequent soil representative. Our results showed that th…
The Effect of High Selenite and Selenate Concentrations on Ferric Oxyhydroxides Transformation under Alkaline Conditions Open
Iron-based nanomaterials have high technological impacts on various pro-environmental applications, including wastewater treatment using the co-precipitation method. The purpose of this research was to identify the changes of iron nanomate…
Exchange Counterion in Polycationic Hydrogels: Tunability of Hydrophobicity, Water State, and Floating Capability for a Floating pH Device Open
Smart gel materials are capable of controlling and switching swelling, water state, and wettability properties triggered by external stimuli. In this study, we fabricated a series of polyelectrolyte hydrogels bearing a 3-trimethylammoniump…
Morphology and Photoluminescence of CH3NH3PbI3 Deposits on Nonplanar,\n Strongly Curved Substrates Open
Organic-inorganic metal halide perovskites have recently attracted increasing\nattention as highly efficient light harvesting materials for photovoltaic\napplications. However, the precise control of crystallization and morphology of\norga…
Approaches of chosen air navigation services providers to UAV integration into air traffic control systems Open
In this article are approaches of Air Navigation Services (ANS) providers in chosen countries to UAV integration into Air Traffic Control Systems identified and described. Firstly we made a synpaper of theoretical information about ANS and…
Distribution of TiO2 Nanoparticles in Acidic and Alkaline Soil and Their Accumulation by Aspergillus niger Open
The nanoparticles of TiO2 (TiO2 NP) have been used as a plant-growth stimulant or catalyst in pesticide formulas. However, due to high resistance of TiO2 NP to abiotic weathering, dissolved Ti is unlikely to act as an active compound in th…
View article: Aspergillus niger Decreases Bioavailability of Arsenic(V) via Biotransformation of Manganese Oxide into Biogenic Oxalate Minerals
Aspergillus niger Decreases Bioavailability of Arsenic(V) via Biotransformation of Manganese Oxide into Biogenic Oxalate Minerals Open
The aim of this work was to evaluate the transformation of manganese oxide (hausmannite) by microscopic filamentous fungus Aspergillus niger and the effects of the transformation on mobility and bioavailability of arsenic. Our results show…
Sequential Extraction Resulted in Similar Fractionation of Ionic Zn, Nano- and Microparticles of ZnO in Acidic and Alkaline Soil Open
The evaluation of nanoparticle bioavailability or the bioavailability of dissolved elements by direct measurement through plant uptake is a strenuous process. Several multi-step sequential extraction procedures, including the BCR sequentia…
Fungus Aspergillus niger Processes Exogenous Zinc Nanoparticles into a Biogenic Oxalate Mineral Open
Zinc oxide nanoparticles (ZnO NPs) belong to the most widely used nanoparticles in both commercial products and industrial applications. Hence, they are frequently released into the environment. Soil fungi can affect the mobilization of zi…
View article: Methods of <em>Ex Situ</em> and <em>In Situ</em> Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Methods of <em>Ex Situ</em> and <em>In Situ</em> Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses Open
We demonstrate the use of two nuclear-based analytical methods that can follow the modifications of microstructural arrangement of iron-based metallic glasses (MGs). Despite their amorphous nature, the identification of hyperfine interacti…
View article: Temperature Behaviour of Hyperfine Magnetic Fields in a Fe-Co-Si-B-Mo-P Metallic Glass Followed with ^{57}Fe Mössbauer Spectrometry
Temperature Behaviour of Hyperfine Magnetic Fields in a Fe-Co-Si-B-Mo-P Metallic Glass Followed with ^{57}Fe Mössbauer Spectrometry Open
Amorphous glass with nominal chemical composition Fe51Co12Si16B8Mo5P8 was studied by combination of the Mössbauer spectroscopy and magnetic measurements in order to characterize magnetic and structural features.Temperature evolution of the…
Structural modifications of metallic glasses followed by techniques of nuclear resonances Open
Iron-based metallic glasses (MGs) are typical representatives of disordered alloys. They exhibit amorphous structure that is lacking any long-range order. Appropriate chemical composition of MGs ensures soft magnetic properties suitable fo…