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Institute: Institute of Geotechnics

Bacterial transformation of sulphur compounds in processes of materials synthesis and degradation
Bakteriálna transformácia zlúčenín síry v procesoch syntézy a degradácie materiálov
Program: VEGA
Project leader: Ing. Luptáková Alena PhD.
Annotation:Project idea has issued from the sulfur bacteria metabolism existence which is the basis of the natural and industrial materials synthesis or degradation. Bacterial oxidation and reduction of sulfur and its compounds are the important part of the metabolism and suggest the possibility of their use in industrial technology as well as environment protection. The proposed project aims at study biooxidative and bioreductive properties of selected species of sulfur bacteria in removing of inorganic and organic pollutants from contaminated industrial waste waters and studying the origin, process and avoiding the corrosive effects on natural and synthetic materials with special emphasis on building materials. The expected project benefit is innovation of methods of application and control the bacteria metabolism having an affinity for sulfur and its compounds in bioremediation and biodegradation.
Duration: 1.1.2015 - 31.12.2018

Identification of Specific Drilling Energy Based on Vibration Signal
Identifikácia špecifickej energie rozpojovania hornín z vibračného signálu
Program: VEGA
Project leader: Ing. Lazarová Edita CSc.
Annotation:The main goal of the project is to develop and elaborate a method for use of vibration signal in the identification of specific energy during rock drilling. The introduction of the vibration signal for assessment of rock drilling process issues from previous theoretical knowledge acquired from study and investigation of the rock cutting mechanism and from extensive experimental research performed at the Institute of Geotechnics, Slovak Academy of Sciences based on input and output parameters monitored during the rock drilling process. The project shall issue an optimization diagram of vibration signal energy, whose extreme value in the area of applicable drilling regimes shall be determined by the argument of minimum of specific drilling energy.
Duration: 1.1.2016 - 31.12.2019

Magnetic behavior of nonequilibrium nanooxides prepared by mechanochemical routes
Magnetické správanie nerovnovážnych nanooxidov pripravených mechanochemickými metódami
Program: VEGA
Project leader: prof. RNDr. Šepelák Vladimír DrSc.
Annotation:Novel nonequilibrium & nanocrystalline stannates (M2SnO4, MSnO3), titanates (M2TiO4, MTiO3), germanates (M2GeO4), and silicates (M2SiO4) containing magnetic cations (M = Co2+, Ni2+, Fe2+) are planned to be prepared via one-step mechanosynthesis. It is expected that the proposed project will make significant contribution to the understanding of phenomena underlying an anomalous magnetic behavior of mechanosynthesized nanooxides of various structure and chemical composition. The planned systematic investigations of relationships between the far-from-equilibrium nanostructure and magnetic properties of nanooxides will allow us to verify whether the model proposed in our earlier work for ferrimagnetic spinels, based on the competition between the effects of spin canting and site exchange of cations between two sublattices, can also be applied for the interpretation of magnetic behavior of other structural types of spin-disordered oxide compounds.
Duration: 1.1.2014 - 31.12.2017

Mechanochemistry of Semiconductor Nanocrystals: from Minerals to Materials and Drugs
Mechanochémia polovodičových nanokryštálov: od minerálov k materiálom a liekom
Program: SRDA
Project leader: prof. RNDr. Baláž Peter DrSc., Dr.h.c.
Annotation:The scientific project will be focused on elaboration of the specific mechanochemical routes to synthesize the advanced substances with high level of utilization in nanotechnologies. From these routes mechanochemical synthesis, mechanochemical reduction, mechanical activation and nanomilling will be applied. The research and development under the umbrella of the project will deal with several nanophase materials (mainly semiconductor nanocrystals, QDs) which will be characterized by a set of sophisticated methods. After synthesis and characterization, the utilization in material science (optical properties), medicine (toxicity and anticancer effects) and metallurgy (preparation of nanophases) will be studied in detail. Special attention will be devoted to the study of relation between synthesis parameters and properties utilized in processes under study.
Duration: 1.7.2015 - 30.6.2019

Mechanochemistry of Solids for Utilization in Nanotechnologies
Mechanochémia tuhých látok pre využitie a nanotechnológiách
Program: VEGA
Project leader: prof. RNDr. Baláž Peter DrSc., Dr.h.c.
Annotation:The scientific project will be focused on working up the mechanochemical routes to prepare substances with high level of utilization in nanotechnology. The processes of mechanical activation, mechanochemical synthesis and nanomilling used in mechanochemistry will be applied with the aim to solve the scientific goals of the project. The objects under study will cover arsenides (InAs), oxides (Fe3O4), carbonates (CaCO3) and chalcogenides (MexAy) (Me=Cd,Zn,As; A=S,Se)). In some cases the modification of the nanoparticle core with organic capping agents will be studied.
Duration: 1.1.2014 - 31.12.2017

Microwave-Assisted Synthesis of Polycomponent Materials for Mineral Processing and Environmental Technologies
Mikrovlnná syntéza polykomponentných materiálov pre úpravnícke a environmentálne technológie
Program: VEGA
Project leader: RNDr. Zubrik Anton PhD.
Annotation:The project aims to study the synthesis, properties and utilization of magnetic carbon materials based on natural as well as industrial carbon precursors (Slovak coal, biomass, fly-ash). Various processes will be employed to develop new materials: microwave pyrolysis, classical pyrolysis as well as co-precipitation with iron cations on carbon matrix. The goal of the project is to develop material possessing magnetic properties with high pore volume and specific surface area. Composites will be characterized by physical and chemical methods. The sorption affinity of composites towards heavy metal ions and organic pollutants from water will be examined as well. Solid-liquid separation after the sorption will be performed by magnetic filtration and the regeneration of sorbent will be investigated. The scheme of process cycle (Sorption/Magnetic Filtration/Desorption/Regeneration-Sorption) will be designed taking into the account the properties of composites as well as sorption efficiency and regeneration factor.
Duration: 1.1.2015 - 31.12.2018

Synthesis and Applications of Oxides for Production of Ecologically Clean Energy
Syntéza a aplikácia oxidov pre výrobu ekologicky čistej energie
Program: VEGA
Project leader: RNDr. Fabián Martin PhD.
Annotation:Nanocrystalline complex oxides of various morphologies will be prepared via variety of chemical methods, including one-step mechanosynthesis, and tested mainly as materials for electrolytes in intermedium temperature solid oxide fuel cells (IT-SOFC´s). Due to the precise analysis combining long-range and short-range structure sensitive analytical methods we will be able to penetrate into the local structural disorder in the as-prepared nanooxides and specimens taken after their sintering. Quantitative information on the short-range structure and on the diffusion phenomena and dynamics of oxygen ions in the synthesized oxides, provided by the detailed combination of several physic-analytical methods, will be complemented by the characterization of their electrochemical behavior. It will be of major importance to establish the interplay between the local structure and electrochemical performance of synthesized nanooxides with the aim to develop a novel high-conductive IT SOFC´s electrolytes for fuel cells.
Duration: 1.1.2016 - 31.12.2018

The Study of Atmospheric Deposition, Particulate Matters and Contamination of Selected Environment Components in Industrial and Urban Area of Košice and Middle Spiš
Štúdium atmosférickej depozície, suspendovaných častíc a kontaminácie vybraných zložiek životného prostredia v priemyselnom a urbánnom prostredí Košíc a stredného Spiša
Program: VEGA
Project leader: Ing. Hančuľák Jozef PhD.
Annotation:The project is focused on two specific components of the environment polluted area, to study air quality through selected components of atmospheric deposition and particulate matters (PM) and the issue of contaminated soils and bottom sediments. The main goal is to obtain deficit knowledge about the interaction and relationship of deposited particles of atmospheric deposition, their deposition fluxes and characteristics, origins and sources of particulate matters in the air. Study area of contaminated soils and bottom sediments is aimed at assessing the risks of potentially toxic elements through acute and chronic ecotoxicological tests and contact phytotoxicity tests.
Duration: 1.1.2015 - 31.12.2018

Study of physico-chemical properties of nanooxides prepared by combined mechanochemical-thermal synthesis
Štúdium fyzikálno-chemických vlastností nanooxidov pripravených kombinovanou mechanochemicko/termickou syntézou
Program: VEGA
Project leader: RNDr. Tóthová Erika PhD.
Annotation:The research will be focused on the preparation of two attractive materials with interesting physico-chemical properties by combined mechanochemical-thermal synthesis. The plan (intent) concerns the multiferroic material LiFeSi2O6 and the well-known semiconductor ZnO. The accent is put on the preparation route, i.e. on the mechanochemical activation and following calcination of the precursors. The unconventional mechanochemical activation increases the internal and surface energy and decreases the coherence (cohesion) of the material at the same time, and this can reduce the temperature of the solid state synthesis. The influence of mechanical activation on the physico-chemical (magnetic and optical) properties of such-prepared material with respect to materials of same composition but prepared by conventional methods will be studied.
Duration: 1.1.2017 - 31.12.2019

Prediction of Drillability of Intact Rock and Rock Mass
Výskum predikcie rozpojiteľnosti hornín a horninového masívu
Program: VEGA
Project leader: Ing. Ivaničová Lucia PhD.
Annotation:The proposed project is focused on a complex research of drillability of rocks and rock mass. The main goal of the project is to evaluate and predict the rock drillability based on their physical, mechanical and technological properties using the energy theory of rock cutting (specific cutting energy). Modelling of the rock drillability by conventional mathematical and statistical methods and means of artificial intelligence and modelling of the force conditions at the rock-tool contact should enable the assessment of the effects of various factors, such as drilled rock type, applied drilling regime, drilling tool type and should deliver determination of the mutual relations between the input and output variables of the rock drilling process. The verification of the derived model of rock drillability should identify the dominant factors affecting the rock and rock mass drillability.
Duration: 1.1.2015 - 31.12.2018

Use of Screening Methods for The Quality Assessment of Selected Environment Components
Využitie screeningových metód pre hodnotenie kvality vybraných zložiek životného prostredia
Program: VEGA
Project leader: RNDr. Findoráková Lenka PhD.
Annotation:The project is focused on the use of screening methods for assessing of soils and sediments quality from selected areas of eastern Slovakia polluted due to the former mining workloads. Originality of this project will be the use of earthworms of the genus Dendrobaena in order to reduce and eliminate possible contamination of test soils and sediments. By using ecotoxicological screening methods risks of tested samples contamination will be evaluated. Investigation of phase changes and determination of kinetic parameters in study samples will be carried out before and after ecotoxicological tests and application of earthworms using spectroscopic methods and thermal analysis.
Duration: 1.1.2016 - 31.12.2019

The Development of Bioremediation Technology of Metals Removing from Soil and Sediment
Vývoj bioremediačnej technológie odstraňovania kovov z pôdy a sedimentov
Program: VEGA
Project leader: Ing. Štyriaková Iveta PhD.
Annotation:Heavy metal contamination of soil and sediment is one of the main environmental problems in all world. Heavy metals are generally toxic and non-biodegradable in the soil and sediment matrix. It is important to develop a practical and economical technology for removal of heavy metals from metal-contaminated soils and sediments. Bioremediation primarily uses bacteria to removal and transform heavy metals. The biological method has been considered as an efficient and cost-effective alternative to physicochemical treatment technologies for soil and sediment remediation. Under regulated conditions of bacterial activity, there will be possible to make the biological processes at bioremediation of soil and sediment more effective. The bioleaching mechanism leads to the decreasing of metals concentration in sediments and these sediments can be applied again into soil. The metals released into leachates by bioleaching will be accumaccumulated by sorption to developed mineral filters which form a closed process.
Duration: 1.1.2015 - 31.12.2018

Development of a system for continuous monitoring of pollution impact on the high-voltage insulation
Vývoj systému pre kontinuálne monitorovanie vplyvu znečistenia na vysokonapäťovú izoláciu
Program: SRDA
Project leader: RNDr. Fabián Martin PhD.
Annotation:The dynamics of the environmental pollution is affected by the industrial emissions and the ongoing climate change. The environmental pollution on electrical insulation is one of the problems faced by distribution utilities and electricity transmission system. Moreover, it can be classified as a potential danger for reliable operation of an electric power system. Seasonal conversions affect the tendency accumulation of contaminants on the surface of insulators and cause chemical changes which influence their original characteristics. This fact needs to be addressed, as mentioned insulation is an important part in the chain of the transmission and the distribution systems reliability. Current knowledge points to the fact that, depending on the profile of the insulator, the pollution, the humidity and the temperature of the surface are strongly related to the insulation withstand. External pollution modifies the electrical breakdown strength of isolation. In Slovakia, thousands of insulators are included in the electricity transmission and distribution systems. Nevertheless, at present time in Slovakia no information is gathered about the current state of pollution in key areas of strategic energy objects. The project is focused on the development of modern equipment, enabling real-time monitoring of insulator surface condition either in autonomous mode or as part of an existing network-based IT infrastructure with a remote dispatching control system. This proposal of research and development is invoked by the project implemented within the EU
Duration: 1.7.2016 - 30.6.2020

Recovery of Selected Critical Minerals from Environmental Loads after Mining, Metallurgy and Coal-Fired Power Industry
Získavanie vybraných kritických surovín z environmentálnych záťaží po baníctve, hutníctve a uhoľnej energetike
Program: VEGA
Project leader: RNDr. Dolinská Silvia PhD.
Annotation:The mineral waste coming from mining (mineral processing), metallurgy and coal-fired power industry can be also treated as a significant source of so called critical mineral raw materials or possibly elements. Submitted project proposal includes detailed analysis of the following selected waste from Slovakia: black coal fly ash (Košice), tailings from flotation and polymetallic ore processing (Markušovce), bauxite residuum (dump of red mud after Bayer process, Žiar nad Hronom), from viewpoint of critical elements abundance. On the basis of obtained data physical and physico-chemical techniques of critical elements beneficiation will be proposed. An extraction of critical elements by various chemical agents and an optimization of leaching process will be performed. Chemical and physico-chemical methods will be applied in selective separation of critical elements from leachates. An influence of microwave energy on efficiency of critical elements extraction from waste will be also investigated.
Duration: 1.1.2017 - 31.12.2020

The total number of projects: 14