A5076271782- Adsorption and biosorption for pollutant removal
- Arsenic contamination and mitigation
- Environmental remediation with nanomaterials
- Mesoporous Materials and Catalysis
- Coal and Its By-products
- Analytical chemistry methods development
- Nanomaterials for catalytic reactions
- Chemical Synthesis and Characterization
- Catalytic Processes in Materials Science
- Heavy metals in environment
- Extraction and Separation Processes
- Zeolite Catalysis and Synthesis
- Gas Sensing Nanomaterials and Sensors
- Minerals Flotation and Separation Techniques
- Iron oxide chemistry and applications
- Nanoparticles: synthesis and applications
- TiO2 Photocatalysis and Solar Cells
- Advanced oxidation water treatment
- Graphene research and applications
- Heavy Metal Exposure and Toxicity
- Electrochemical sensors and biosensors
- Coal and Coke Industries Research
- Diatoms and Algae Research
- Fluoride Effects and Removal
- Water Quality and Pollution Assessment
Slovak Academy of Sciences
2013-2024
Institute of Geotechnics of the Slovak Academy of Sciences
2013-2024
ORCID
2020
Royal Military Academy
2009-2013
Dubna State University
2008
Abstract We discuss here next-generation membranes based on graphene for water desalination, the results of molecular simulations, application nanofabrication technologies, and experiments. The potential to serve as a key material advanced comes from two major possible advantages this atomically thin two-dimensional material: permeability selectivity. Graphene-based are also hypothetically attractive concentration polarization fouling, graphene’s chemical physical stability. Further research...
We present preliminary results of our joint investigations to monitor and mitigate environmental pollution, a leading contributor chronic deadly health disorders diseases affecting millions people each year. Using nanotechnology-based gas sensors; pollution is monitored at several ground stations. The sensor unit portable, provides instantaneous concentrations accurately, can be readily deployed disseminate real-time data web server providing topological overview locations. are also...
The presence of arsenic in water supplies is a major problem for public health and still concerns large parts population Southeast Asia, Latin America Europe. Removal usually accomplished either by coagulation with iron salts or adsorption oxides activated alumina. However, these materials, although very efficient arsenic, normally do not remove other undesirable constituents from waters, such as chlorine organo-chlorine compounds, which are the results chlorination. Activated carbon has...
Abstract Organic dyes such as methyl orange (MO) and methylene blue (MB) are widely used in different industries have become one of the leading emerging water contaminants. The purpose current research is to develop new polymer nanocomposite filters for effective elimination dyes, which non-biodegradable not efficiently removed by traditional treatment methods. New padded covered were produced applying polystyrene-acrylic/ZnO on polyester surface blade coating one-bath pad Principal results...
Industrial wastewater may contain high molybdenum concentrations, making treatment before discharge necessary. In this paper, the removal of molybdate anions from water is presented, using clinoptilolite zeolite coated with magnetite nanoparticles. batch experiments influence pH, ionic strength, possible interfering (oxy)anions, temperature and contact time investigated. Besides determination kinetic parameters adsorption isotherms, thermodynamic modeling performed to get better insight into...
The magnetite nanoparticles were functionalized with silica shells bearing mercaptopropyl (monofunctional) and mercaptopropyl-and-alkyl groups (bifunctional) by single-step sol-gel technique. influence of synthetic conditions leading to increased amounts active functional on the surface improved capacity in uptake Ag(I), Cd(II), Hg(II), Pb(II) cations was revealed. physicochemical properties obtained magnetic nanocomposites investigated FTIR, Raman, XRD, TEM, SEM, low-temperature nitrogen...
A nanocrystalline zeolite of Na-X type (CFAZ) was synthesized by ultrasonic-assisted double stage fusion-hydrothermal alkaline conversion lignite coal fly ash. Modified CFAZ with magnetic nanoparticles (MNP-CFAZ) obtained adding presynthesized between the synthesis stages. CFAZs loaded particles copper (Cu-CFAZ) and cobalt (Co-CFAZ) oxides were prepared postsynthesis modification parent CFAZ, applying a wet impregnation technique. The modified examined for their phase composition X-ray...
Spherical silica particles with bifunctional (≡Si(CH 2 ) 3 NH /≡SiCH , ≡Si(CH /≡Si(CH (CF 5 CF surface layers were produced by a one-step approach using modified Stöber method in three-component alkoxysilane systems, resulting greatly increased contents of functional components. The content groups and thermal stability the analyzed diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, 13 C 29 Si solid-state NMR spectroscopy revealing their composition organization. fine...
This research deals with a highly efficient, selective, low-cost, and recyclable adsorbent for the fast removal of lead (Pb)(II) ions from aqueous solutions, an investigation related adsorption mechanisms. Three types materials were prepared pea peels waste using simple, energy-efficient environmentally friendly treatment. Obtained adsorbents characterized by elemental analysis, infrared spectroscopy, scanning electron microscopy, Boehm titration, main parameters determined. The highest...
We demonstrated the deposition of architecture graphene oxide on stainless steel substrate and its potential environmental application. The synthesis characterization were described. controlled formation coatings in form homogenous structure is by scanning electron microscopy (SEM). structure, morphology properties material assessed Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), Raman transmission (TEM) atomic force (AFM). stability these structures...
Production of environmentally friendly multitasking materials is among the urgent challenges chemistry and ecotechnology. The current research paper describes synthesis amino-/silica amino-/phenyl-/silica particles using a one-pot sol-gel technique. CHNS analysis titration demonstrated high content functional groups, while scanning electron microscopy revealed their spherical form ∼200 nm in size. X-ray photoelectron spectroscopy data testified that hydrophobic groups reduced number water...