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Project

Institute of Geotechnics SAS

International Projects

MechSustInd - CA18112: Mechanochemistry for Sustainable Industry

CA18112: Mechanochémia pre obnoviteľný priemysel

Duration: 1. 5. 2019 - 30. 4. 2023
Program: COST
Project leader: RNDr. Baláž Matej PhD.
Annotation:Organic mechanochemistry has been shown to enable the reduction, or the elimination, of solvents, while ensuring increased yields and scope of substrates compared to solution-phase synthesis, better crystallinity of final products, and access to products that can be formed only under mechanical activation conditions. This COST Action aims at establishing a multi-disciplinary network of European scientists, engineers, technologists, entrepreneurs, industrialists and investors addressing the exploitation of mechanical activation in the production of chemicals through sustainable and economically convenient practices on the medium and large scales. Specifically, this Action addresses the objective of harmonizing fundamental and applied research with technological innovation and industrial needs, representing the necessary step for enhancing the impact of mechanical processing onto organic synthesis and transferring specific knowledge into the industrial value chains. The Action aims to nucleate a critical mass of actors from EU research Institutions, enterprises and industries, bringing together different areas of expertise and application. The creation of an authoritative community to promote the study of mechanochemistry and encourage its utilization in production processes will catalyze strategic advances in European chemical industry. The favorable features of mechanically activated (organic) transformations is expected to enable the attainment of far-reaching objectives connected with the development of green economy, the improvement of European market competitors’ capabilities, the innovation of process engineering, and the growth of a new generation of specialized researchers.

Li-ion dynamics in complex oxides prepared by mechanochemical route

Dynamika lítium-iónov v komplexných oxidoch pripravených mechanochemickou cestou

Duration: 10. 9. 2020 - 10. 2. 2021
Program: Bilaterálne - iné
Project leader: Mgr. Skurikhina Olha
Annotation:Pyroxenes with chemical formula M2M1T2O6 have shown the potential as cheaper and ecologically friendly alternatives for cathode materials. Silicate pyroxenes (LiFeSi2O6 and LiVSi2O6) were investigated for that purpose but did not show sufficient rate of Li+ insertion during charging-discharging process. One of the reasons is the rigidity of chemical bonds in [SiO4] tetrahedra that hampers the process. In the framework of this project, ion mobility of selected pyroxenes (LiFeSi2O6 and LiFeGe2O6) prepared by non-conventional mechanochemical process will be studied for the first time by impedance spectroscopy. Mechanochemical approach will be used for the induction of (nano)glassy state in these materials. The effect of milling on crystallinity thus the Li-ion mobility will be studied by EIS and XRD.

COMOX - Complex oxide electrolytes for energy conversion technologies: Mechanosynthesis and electrochemical characterization.

Elektrolyty na báze komplexných oxidov pre výrobu energie: Mechanosyntéza a elektrochemické vlastnosti.

Duration: 1. 1. 2019 - 31. 12. 2021
Program: Bilaterálne - iné
Project leader: RNDr. Fabián Martin PhD.
Annotation:The proposed joint project is aimed at the development of novel nanocrystalline oxide electrolytes with modified structures and morphologies and enhanced functional properties for high-temperature electrochemical energy conversion and storage technologies. The main objectives include preparation of complex perovskite-type oxides with designed compositions employing calcination-free mechanochemical synthesis optimized for a short reaction time, development of sintering procedures for fabrication of dense electrolyte ceramics with controlled grain-size distribution, and systematic analysis of relationships between composition, (micro)structure and ionic transport. Non-conventional mechanosynthesis approach is envisaged as cost-effective and fast route forfabrication of solid electrolytematerialswith controlled microstructure and improved electrochemical performance, and thus encompasses a promising pathway contributing to development of electrochemical storage for renewable energy.

Environmentally friendly synthesis of nanocomposites based on eggshell waste and silver nanoparticles with biological activity using ball milling

Environmentálne prijateľná syntéza nanokompozitov na báze vaječného odpadu a strieborných nanočastíc s biologickou aktivitou za využitia guľového mletia

Duration: 1. 9. 2020 - 30. 6. 2021
Program: Bilaterálne - iné
Project leader: RNDr. Baláž Matej PhD.
Annotation:The nanocomposite based on waste eggshell and silver nanoparticles with biological activity will be prepared using a ball milling method. This methodology facilitates the one already performed at the host institution. Thus, waste material, upon reinforcement with silver nanoparticles known for their strong antibacterial activity, can be turned into functional material with biological activity. The host institution has great tools for both synthesis and characterization of the nanocomposite.

Insight to local structure of doped/nanocrystalline complex oxides by sophisticated physico-chemical methods. Educational approach.

Lokálna štruktúra dopovaných podvojných oxidov nanokryštalických rozmerov pomocou sofistikovaných fyzikálno-analytických metód. Prenos poznatkov a vzdelávanie.

Duration: 1. 1. 2021 - 31. 12. 2023
Program: Medziakademická dohoda (MAD)
Project leader: RNDr. Fabián Martin PhD.
Annotation:Functional properties of advanced materials are significantly influenced by their preparation including size of crystallites and formation of defects. Apart variety of several groups of materials, complex and/or doped oxides are still widely used and studied because of high variety of applications. Nevertheless, the synthesis procedure contributes to their applications as it can influence their structure, size, morphology, formation of vacancies, structure distortion etc. Synthesis of materials by ball milling is considered to fast and simple method for preparation of oxides of various composition and structures with modified structures. However, standard available X-ray diffraction methods are often unsufficient to get insight real structure of prepared materials. In this context, spectroscopy methods provides very detail information on local structure of investigated samples. It is the main objective of the proposal to cooperate in the field of spectroscopy-oriented study of mechanosynthesized oxides for advanced applications involving training of PhD students/young scientists.

National Projects

A green approach to the direct synthesis of selected oxide and selenide mineral phases by high-energy milling

Ekologický spôsob prípravy vybraných minerálnych fáz na báze oxidov a selenidov vysoko-energetickým mletím

Duration: 1. 1. 2020 - 31. 12. 2022
Program: VEGA
Project leader: Mgr. Achimovičová Marcela PhD.
Annotation:The non-conventional mechanochemical method will be used in the preparation of selected types of oxides and selenides, namely pyroxenes with the NaFeA2O6 chemical composition, where A = Si, Ge and selenospinels with the chemical composition AB2Se4, where A = Co, Ni, Cu and B = Co, Ni, Ti. Physico-chem. prop. of these materials can be used in practice as batteries. For the first time, the processes of mechanically induced nucleation from the early stages to the formation of the desired phases will be studied, providing information and clarification of the microscopic mechanism of this method. Detailed quantitative information on the atomic and electron structure of the prepared materials and qualitative information on the surface and granularity will be obtained. The effect of the mechanical effect on the physico-chemical (magnetic, electrical and optical) properties of mechanosynthetized materials will be studied by comparison with materials of the same composition prepared by other conventional methods.

The assessment of environmental load of the environment in former mining area using traditional and alternative bioindication methods.

Hodnotenie environmentálneho zaťaženia prostredia v bývalom banskom areáli využitím tradičných a alternatívnych bioindikačných metód.

Duration: 1. 1. 2018 - 31. 12. 2021
Program: VEGA
Project leader: Ing. Luptáková Alena PhD.
Annotation:The present project is focused on the research of pollutants in individual environmental components within the former mining area in the cadastral area of the villages Zlatá Baňa and Červenica (Eastern Slovakia). For the research purposes, in addition to traditional methods, alternative bioindication research methods will be used. These methods are low-cost, easy to implement and effective for assessing the content of contaminants. By statistical evaluation of the obtained results will be verified the suitability and effectiveness of these methods, and suggested the most appropriate alternative method. There will be assessed the impact of heavy metals on selected biological, chemical and physical characteristics of environmental components.

Hybrid Composites for Complex Treatment of Industrial Waters

Hybridné kompozity pre komplexné čistenie priemyselných vôd

Duration: 1. 7. 2020 - 30. 6. 2024
Program: APVV
Project leader: Melnyk Inna PhD.

MULTINANO - -

Chalkogenidy ako perspektívne, ekologicky a ekonomicky prijatelné nanomateriály pre energetiku a medicínu

Duration: 1. 7. 2019 - 30. 6. 2023
Program: APVV
Project leader: Dr.h.c. prof. RNDr. Baláž Peter DrSc.

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Mechanosyntéza a štúdium minerálov na báze komplexných oxidov ako vhodných komponentov zariadení pre výrobu energie s minimálnym negatívnym dopadom na životné prostredie

Duration: 1. 1. 2019 - 31. 12. 2022
Program: VEGA
Project leader: RNDr. Fabián Martin PhD.

Preparation of Materials for the Remediation of Old Mining Sites.

Príprava materiálov pre remediáciu environmentálnych záťaží po banskej činnosti

Duration: 1. 1. 2019 - 31. 12. 2022
Program: VEGA
Project leader: Ing. Václavíková Miroslava PhD.
Annotation:Due to intensive industrial activities, many pollutants such as heavy metals, radionuclides and other substances including organic once enter the environment and have been identified as highly toxic and harmful to human health. Heavy metals are non-biodegradable species. In the aqueous environment they occur in dissociated forms (as cations i.e. Cd2+, Pb2+, Cu2+, Zn2+; anions/oxyanions i.e. HAsO42-, CrO42-, HSeO4-, HSeO3-, HMoO4--). One of the priority sources of heavy metals in Slovakia are old and/or abandoned mines with the significant streams of acid mine drainage (AMD) waters. The objective of the project is the synthesis and investigation of composite sorbents based on Fe oxides for the removal of both cationic and anionic forms of heavy metals/metalloids from aqueous media. Moreover, the sortion affinity towards the selected organic contaminants such as polyaromatic hydrocarbons will be investigated as well.

Study of the bio-oxidising and bio-reducing processes of sulphur and its compounds in environment and industry

Štúdium biooxidačných a bioredukčných procesov síry a jej zlúčenín v životnom prostredí a v priemysle

Duration: 1. 1. 2019 - 31. 12. 2022
Program: VEGA
Project leader: Ing. Luptáková Alena PhD.
Annotation:The project is focused on the study of positive and negative effects of the metabolic activity of sulphur-oxidizing and sulphate-reducing bacteria to the environment and technologies connected with mineral processing and construction industry. The main research area is to develop method of application and sulphuric bacteria metabolism control in connection with industrial waste water treatment, prediction study and prevention of corrosive effects on building materials. The study of new methodology about the combination of conventional methods with biooxidation and bioreduction of sulphur and its compounds in the treatment and processing of raw materials, industrial wastes and environmental matrices is the expected benefit of the project.

Study the growth kinetics of the bacterial isolate Acidithiobacillus ferrivorans SS3 at suboptimal temperatures simulating the real conditions of acid mine drainage

Štúdium kinetiky rastu bakteriálneho izolátu Acidithiobacillus ferrivorans SS3 pri suboptimálnych teplotách simulujúcich reálne podmienky kyslých banských vôd.

Duration: 1. 1. 2020 - 28. 2. 2021
Program: DoktoGranty
Project leader: Mgr. Hagarová Lenka
Annotation:Bacterial strain Acidithiobacillus ferrivorans SS3 belongs to autotrophic iron-oxidizing acidophiles, that play an essential role in the weathering of sulphide minerals e.g. pyrite. The hydrolysis of Fe3+ ion, which is a product of bacterial oxidation, is an acidity producing reaction leading to the formation of secondary iron minerals such as hydroxysulphates (schwertmannite, jarosite). The objective of this project is to describe oxygen and carbon dioxide consumption rates of bacteria and to determine the bacterial growth, iron oxidation kinetics and ferric iron minerals precipitation at suboptimal temperatures simulating the real conditions of AMD (acid mine drainage). The morphology and chemical composition of schwertmannite and jarosite-group minerals will be characterized by SEM microscopy and EDX analyses. The obtained information will lead to better knowledge of acidophilic bacteria-associated reaction in mine environments, their application in hydrometallurgy and water and soil remediation.

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Štúdium možností mechanochemickej syntézy selenidu striebra - polovodiča pre uskladňovanie energie

Duration: 1. 1. 2021 - 31. 12. 2021
Program: DoktoGranty
Project leader: Mgr. Gáborová Katarína
Annotation:Recently, green technologies have attracted much attention due to environmental concerns. The project is focused on the verification of three strategies of silver selenide, Ag2Se mechanochemical synthesis, which is nanostructured semiconductor and perspective thermoelectric material. One-step direct synthesis from the precursors AgNO3 and SeO2 and two other two-steps synthetic pathways will be studied, whereby in the first step, Ag nanoparticles will beprepared by milling-induced reduction using a chemical or biological reducing agent. These hitherto unrealized processes represent a simple, low-cost, environmentally friendly, and solvent-free method with the potential for largescale fabrication of Ag2Se. Innovative energy-saving technology is considered to be a promising way to relieve the impact on the environment. The project includes the monitoring of the kinetics of the proposed mechanochemical syntheses, an evaluation of the phase purity of the prepared products by X-ray powder diffractometry (XRPD), morphology characterization by scanning and transmission electron microscopy (SEM, TEM) and measurement of thermoelectric properties.

The study of particulate matters in ambient air and selected environment components using the screening methods

Štúdium tuhých častíc v ovzduší a vybraných zložiek životného prostredia využitím screeningových metód

Duration: 1. 1. 2019 - 31. 12. 2022
Program: VEGA
Project leader: Ing. Hančuľák Jozef PhD.

Multicomponent filters in process of leachates cleaning from the toxic elements after the bioremediation of soils contaminated by metallurgical industry

Viaczložkové filtre v procese čistenia výluhov od toxických prvkov po bioremediácii pôd kontaminovaných hutníckym priemyslom

Duration: 1. 1. 2019 - 31. 12. 2022
Program: VEGA
Project leader: Ing. Znamenáčková Ingrid PhD.
Annotation:The project involves the basic research oriented on the treatment of leachates containing toxic elements originated from the bioremediation process of contaminated soils. The project continues original methods of soils and sediments bioleaching by heterotrophic bacteria in aerobic and anaerobic conditions studied in previous VEGA project focused on the development of bioremediation technology. The subject of the project is preparation and study of multicomponent filters properties, composed from the natural materials (quartz sand, siderite, pyrite) and synthetic prepared materials (iron and manganese oxides/hydroxides) that will be used for cleaning of leaching media containing toxic elements. The original gain of the project will be the definition of optimal ratio of particular filters components for the most effective recycling of media containing different concentrations of toxic ions in dependence of locality and soil contamination. The greatest accent will be focused on the arsenic removal.

The effect of the strain rate on the strength and deformation rock properties for the research of the rock disintegration

Vplyv rýchlosti deformácie na pevnostné a pretvárne vlastnosti hornín pre výskum rozpojovania hornín

Duration: 1. 1. 2019 - 31. 12. 2022
Program: VEGA
Project leader: Ing. Labaš Milan PhD.

High-energy milling for the synthesis of nanomaterials using bio-approach and selected environmental applications

Vysoko-energetické mletie pre syntézu nanomateriálov bio-prístupom a vybrané environmentálne aplikácie

Duration: 1. 1. 2018 - 31. 12. 2021
Program: VEGA
Project leader: RNDr. Baláž Matej PhD.
Annotation:The research project is focused on mechanochemical synthesis of the selected nanomaterials via combination of high-energy milling and green approach using precursors based on minerals, natural materials and waste. Mechanochemical reduction will be aimed at preparation of nanocrystalline metals with bactericide effects (Ag, Cu). At the same time, the project will be focused also environmentally, because the application of mechanochemistry will be tested on elimination of halogenated compounds and sorption of toxic metals present in wastewaters after mining and metallurgical activities. Environmental aspect will also resonate by research of selected organic reactions where solid state approach via mechanochemistry can be realized through solvent-free technology. Available characterization methods will be applied for products characterization and monitoring of environmental parameters. The project broadens the application potential of mineralurgy and also metallurgy.

HINOX - Relationships between structure and unusual physical properties in highly nonequilibrium oxides prepared by unconventional mechanochemical synthesis

Vzťahy medzi štruktúrou a nezvyčajnými fyzikálnymi vlastnosťami vo vysoko-nerovnovážnych oxidoch pripravených nekonvenčnou mechanochemickou syntézou

Duration: 1. 7. 2020 - 30. 6. 2024
Program: APVV
Project leader: RNDr. Fabián Martin PhD.
Annotation:Nonconventional mechanochemical methods will be used to prepare the far-from-equilibrium novel nanooxides. The studies of the early stages of the mechanically induced nucleation and growth of nonequilibrium phases will provide access to the elucidation of the microscopic mechanism of the nonconventional mechanochemical preparation route. This point represents one of the fundamental but till now the unsolved scientific issues in the field of mechanochemistry/solid state chemistry. Valuable quantitative insights into the atomic and electronic structures as well as into the dynamic and kinetic processes in the mechanochemically prepared nanomaterials will be obtained. Mechanical, magnetic and electric responses of the far-from-equilibrium nanophases will be studied experimentally with the aim to establish the interplay between their local structure and the functional behavior.

AuMCHBA - Gold recovery from refractory sulphide concentrates by mechanochemico-biological activation

Získavanie zlata z ťažko spracovateľných sulfidických koncentrátov s aplikáciou mechanochemicko-biologickej aktivácie

Duration: 1. 1. 2020 - 31. 12. 2022
Program: VEGA
Project leader: Ing. Ficeriová Jana PhD.
Annotation:The demanding processing of gold-containing concentrates, as well as dangerous cyanide method for gold recovery encourage the application of new ways to obtain this precious metal. Therefore, the aim of this project is obtaining gold from refractory sulphide concentrates by using of non-cyanide mechanochemico-biological processes. Mechanochemical activation of concentrates and siliceous shells of specified algae in the non-cyanide environment causes changes in the physico-chemical properties of gold minerals as well as algae mineral constituents. These structural changes have a decisive influence on the formation of gold nanoparticles into non-cyanide media under the specific reaction conditions, from which they are subsequently fixed in the cellular matrix of mechanochemically activated algal shells. Gold nanoparticles can have various utilization in practice, such as accelerating the breakdown of hazardous substances or disposal of pollutants from contaminated water, soil and air.
Project web page:https://e-vega.sav.sk/

Projects total: 20