The list of national projects SAS

Back to the list of institutes

Institute: Institute of Geotechnics

Bifunctional Silica and Magnetite Spherical Particles with Tailored Porosity and Surface Chemistry for Complex Water Treatment
Bi-funkčné sferické častice na báze kremíka a magnetitu pre čistenie vôd
Program: FP7
Project leader: Ing. Václavíková Miroslava PhD.
Annotation:Project aims to develop bi(or multi)functional silica and magnetically removable adsorbents for water purification and remediation securing removal of chemical pollutants both organic and inorganic nature. SASPRO will unite the efforts of the scientists and their expertise in two adjacent fields - synthesis and functionalization of mesoporous silica and silica-based adsorbents from the Marie Curie Fellow Dr Melnyk and advanced experience in physicochemical characterization of surface binding with valuable experience of their implementation in water purification from the Institute of Geotechnics SAS. Our specific aims: 1) Creation of silica microsheres with well defined composition for selective uptake of metal cations. 2) Сombination the properties of magnetite (easy removal from the reaction medium, recovery) with the assets of functionalized polysiloxane (specific groups, large specific surface area) and contribute to the selective removal of contaminating cations and organic molecules simultaneously. 3) Synthesis of nanocomposite multi-functional microparticles, testing them on wastewater samples modeling complex water systems. The goals will be achieved through coordinated research uniting the efforts of specialists in materials synthesis, characterization and application. In addition these materials are promising for applications in chromatography, drug delivery, creation of chemo- and biosensors, etc.
Duration: 1.3.2016 - 31.12.2018

Photocatalytic purification of contamined water and air using nanostructured materials
Fotokatalytické čistenie kontaminovaných vôd a vzduchu použitím nanomateriálov
Program: Inter-governmental agreement
Project leader: RNDr. Fabián Martin PhD.
Annotation:The project is directed towards studying the processes of photocatalytic purification of polluted water and air, using nanostructured materials mostly on the basis of oxides. It will be focused on comparison the efficiency of photocatalysts - semiconductors based on oxides, obtained by mechanochemical synthesis with other commercial photocatalysts. The presently known commercial TiO2 photocatalysts, based on anatase/rutile synergism, will be improved by finding an appropriate substitute of the either of anatase or rutile component with other narrow-band semiconductors. Obtaining and applying the visible-light-active photocatalysts to water and air treatment and testing them in suspension reactors (water purification) and in flat-plate gas-phase continuous flow photocatalytic reactor (air purification) will be the aim of our study. The kinetics of the photocatalytic reactions will be evaluated on the basis of Langmuir-Hinshelwood model both under continuous flow conditions (plug-flow reactor) and under flow-circulation conditions using a gas circulation pump (ideal mixing reactor) to enter the kinetic region. The effect of the thickness of the photocatalytic coating with respect to operation in the diffusion or in the kinetic region will be estimated. Optimal experimental conditions for maximal conversion degree will be selected in view of achieving steady state operation and optimal reactor configuration removing the dead zones.
Duration: 1.7.2016 - 29.12.2017

Mechanochemical Activation and Synthesis – An Ecological Friendly Process in the Production of Materials for Photocatalytic Air and Water Purification
Mechanochemická aktivácia a syntéza - ekologicky prijateľné procesy prípravy materiálov pre fotokatalytické čistenie vody a ovzdušia
Program: Inter-academic agreement
Project leader: RNDr. Fabián Martin PhD.
Annotation:Doping of simple oxides (e.g. TiO2, ZnO, Fe2O3 etc.) by nitrogen results in formation of oxygen defects and shift of optical wavelength absorption maximum from UV to visible region. This fact has a great influence on preparation nanocrystalline photocatalysts working not only with UV but also with visible light. Due to the project we have prepared N doped TiO2 and ZnO. The change of their colour indicates the shift of absorption maximum from UV to visible region. This behaviour was further confirmed by DRS spectroscopy. Microstructural changes were evaluated by XRD and XPS analyses. At the present the as-prepared materials are tested for photocatalytic activity on azodyes (liquid phase) and ethylene (gas phase).
Duration: 1.1.2015 - 31.12.2018

Nanoparticle Activated Synthetic Zeolite from Coal Fly Ash for Water Remediation
Remediácia vôd pomocou nanočasticami aktivovaných syntetických zeolitov na báze popolčekov
Program: Inter-governmental agreement
Project leader: Ing. Václavíková Miroslava PhD.
Annotation:Synthetic and natural zeolites have been successfully applied as adsorptive materials for effective removal of heavy metals, phosphates, ammonium and organic pollutants from contaminated waters. Zeolite synthesis is usually performed by the hydrothermal crystallization of silica gel, alkaline bases and aluminum salts at elevated temperatures and strong alkaline media. A novel promising approach for production of low-cost sorbents is the conversion of mineral waste from the incineration of solid organic fuels in thermal power plants in microporous materials with high adsorption or ion-exchange capacity, which can replace successfully the nature zeolites in the filters of water purification systems.
Duration: 4.5.2016 - 31.12.2017

Solutions for Critical Raw Materials Under Extreme Conditions
Riešenie problému kritických surovín pre materiály v kritických podmienkach
Program: COST
Project leader: prof. RNDr. Baláž Peter DrSc., Dr.h.c.
Annotation:Project is aimed at substitution of critical raw materials used in preparation of advanced alloys and composites under extreme conditions of temperature,loading, wear and shear in energy,,car and traffic sectors
Duration: 10.3.2016 - 9.3.2020

Development of innovative processes for the valorization of spent batteries
Vývoj inovačných procesov pre zhodnotenie použitých batérií
Program: Inter-academic agreement
Project leader: Ing. Luptáková Alena PhD.
Annotation:The project presets of the previous project continuation over the years 2013 – 2015. The principal goal of the project proposal (the continuation), is the proposal of innovative integrated hydro/biohydrometallurgical process, economic and environmentally, to enhance the spent alkaline and zinc–carbon batteries, with development – on pilot scale - of the process of recovery of metal values and the production of components of commercial interest.
Duration: 1.1.2016 - 31.12.2017

Structure-Function Relationship of Advanced Nanooxides for Energy Storage Devices
Vzťahy medzi štruktúrou a funkčnými vlastnosťami vo vyspelých nanooxidoch určených pre uskladňovanie energie
Program: Multilateral - other
Project leader: prof. RNDr. Šepelák Vladimír DrSc.
Annotation:The main objective of the proposed project is focused on the development of novel and sophisticated chemical routes towards energy harvesting materials within multidisciplinary oriented approach in the field of solid state chemistry. Basic concept includes (i) to obtain well-defined complex oxide materials by starting from welldesigned precursors, (ii) to utilize phenomena at the solid interfaces, particularly those between inorganic – organic solids, (iii) to utilize unique features of non-conventional processes, i.e. mechanical activation and microwave technology, and (iv) to characterize the products under well-defined and reproducible conditions, without restriction to the properties of the end use, e.g. the capacity fade of the complete Li-ion and Na-ion batteries. The target materials include (i) Li- and Na- containing nanocrystalline complex oxides mostly with structure of spinels, garnets, pyroxenes, olivines and orthosilicates and (ii) partially reduced and partially anion exchanged oxide nanoparticles (SiO2, SnO2 and TiO2). Non-conventionally synthesized oxides are expected to possess modified/enhanced structural and electrochemical properties. In the context of the proposed project, special effort will be focused on the systematic study of the structure-related functional properties directly connected towards energy storage applications. The final goal of the project is the optimization and prediction of the real structure of the products possessing e.g. the highest possible Li+ (Na+) ion conductivity by systematically introduced additives and the application of preparative processes of highest precision.
Duration: 1.10.2015 - 30.9.2018

The total number of projects: 7