A5083989963- Lignin and Wood Chemistry
- Ionic liquids properties and applications
- SARS-CoV-2 detection and testing
- Pharmaceutical and Antibiotic Environmental Impacts
- Biosensors and Analytical Detection
- Advanced oxidation water treatment
- Advanced Cellulose Research Studies
- Analytical chemistry methods development
- SARS-CoV-2 and COVID-19 Research
- Analytical Chemistry and Chromatography
- Healthcare and Environmental Waste Management
- Biochemical and biochemical processes
- Advanced Photocatalysis Techniques
- Membrane Separation Technologies
- Advanced Battery Materials and Technologies
- Extraction and Separation Processes
- Surfactants and Colloidal Systems
- Nanoparticles: synthesis and applications
- Pharmacological Effects and Assays
- Crystallization and Solubility Studies
- Environmental Toxicology and Ecotoxicology
- Mesoporous Materials and Catalysis
- Electrochemical Analysis and Applications
- Enzyme-mediated dye degradation
- Adsorption, diffusion, and thermodynamic properties of materials
Slovak University of Technology in Bratislava
2016-2023
Czech University of Life Sciences Prague
2019
Polymer Institute of the Slovak Academy of Sciences
2018
Deep eutectic solvents (DESs) are a unique category of green that have gained attention in biomass processing due to their distinctive properties not offered by traditional solvents. The pH behavior 17 selected DESs along with temperature dependence on were evaluated this study. For all investigated DESs, increase caused decrease value.
Deep eutectic solvents (DESs) are a relatively new topic in science. Their usage is not yet clearly defined, and the areas which DESs may be applied constantly growing. A simple clean fractionation of main components biomass represents very important step creating clean, renewable carbon economy. major challenge use for at lower temperatures, without expensive raw materials. In this work, wheat straw was pretreated with six different DES systems composed choline chloride urea (1:2), malonic...
This study aimed to resolve the issue of lack detailed understanding effect initial lignin content in hardwood kraft pulps on pulp delignification by deep eutectic solvents. The authors used Kappa number concerned pulp, intrinsic viscosity, and selectivity efficiency as parameters effect. (50 g oven dry pulp) was treated with four different DESs systems based choline chloride lactic acid (1:9), oxalic (1:1), malic system alanine:lactic (1:9); results were compared those reached oxygen...
In this short communication, UV/Vis spectrophotometry is described as an analytical tool for the quantification of lignin content in deep eutectic solutions. The was solubilized with different solvent (DES). DESs were prepared binary mixtures choline chloride lactic acid (1:9); (1:10); ethylene glycol (1:2); glycerol (1:2) and alanine:lactic (1:9), betaine:lactic (1:2). UV-Vis spectrometric lignins independent type lignin. approach consists measuring absorbance a solution dissolved solvents...
Coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) emerges to scientific research and monitoring of wastewaters predict the spread virus in community. Our study investigated COVID-19 Bratislava, based on wastewater from September 2020 until March 2021. Samples were analyzed two treatment plants city with reaching 0.6 million monitored inhabitants. Obtained results analysis suggest significant statistical dependence. High...
Deep eutectic solvents play an important role in the clean production of chemicals and fractionation renewable sources. When dissolving lignin or cellulose at elevated temperatures, thermal stability deep is great importance. However, studies concerning long-term isothermal are scarce. In this study, solvents, namely, choline chloride with oxalic acid dihydrate, glycerol, glycolic, malic acid, citric monohydrate were investigated using thermogravimetric analysis (TGA). The decomposition...
Mechanical properties were evaluated for pulp delignified by four deep eutectic solvents (DES). The DES systems based on choline chloride and lactic acid (1:9), oxalic acid:dihydrate (1:1), malic the system alanine:lactic (1:9). results indicated that type of used influenced pulp’s mechanical including tensile, burst tear indexes, tensile length, stiffness. most suitable chloride:malic (1:1) which achieved best aforementioned compared to other systems. weakest performance in process...
In the field of green chemistry is study new solvent systems great challenge. Deep eutectic solvents (DESs) represent principles chemistry. Currently are preferred these types chemicals suitable for selective removal extractives, lignin or polysaccharides from biomass. Biomass selectively treated to individual fractions, which possible with following purification obtain products in higher yields and purity. this work describes various deep solvents, can be used pretreatment
Closed-system microwave-assisted extraction was applied to extract total phenolics from spruce (Picea abies) bark, using 96.6% ethanol as an extractant. The influence of particle size (0.3; 1.0; 2.5 mm), time (3 20 min), and temperature (60; 80; 100 °C) on polyphenol recovery also studied. Higher smaller resulted in a higher yield extracted polyphenols. However, the effect more complicated. all three factors is tentatively explained.
A comparative study of accelerated solvent extraction (ASE) with two conventional volatile isolation methods including traditional steam distillation and Soxhlet was performed on lavender. ASE carried out by butanol (polar protic solvent) or dichloromethane (nonpolar the temperature 120°C. Separation identification components GC/MS. The main analysed samples were Linalool (14.79%), α-Terpineol (4.42%), oxide (furanoid) (2.92%), cis -linalyl (2.8%), α-Bisabolol (1.86%) Octacosane (1.56%) for...
The reaction of cellulose with water produces swelling and structural changes the fibres, both effects being crucial importance for understanding paper formation.It was investigated how treatment pulp deep eutectic solvents affects kinetics fibres.Unbleached kraft treated three containing choline chloride (ChCl) -ChCl:lactic acid (1:9), ChCl:oxalic (1:1) ChCl:malic -and system alanine:lactic (1:9).The rate maximum in were determined using a modified monitoring unit measuring ability.Since...
The outbreak of the coronavirus disease 2019 (COVID-19) raises questions about effective inactivation its causative agent, Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) in medical wastewater by disinfectants. For this reason, our study from a selected hospital evaluated several different advanced oxidation methods (Fenton reaction and Fenton-like ferrate (VI)) capable effectively removing SARS-CoV-2 RNA. obtained results all investigated processes, such as ferrates, Fenton...
Abstract COVID-19 pandemic caused by β-coronavirus SARS-CoV-2 emerges to intensive scientific research and monitoring of wastewaters because their possible important role in identifying early warning a spread the virus community. In our study, we investigated prevalence disease population capital city Slovakia, Bratislava, based on wastewater from September 2020 until March 2021. Samples were analyzed two major treatment plants with reaching nearly 0.6 million monitored inhabitants. Obtained...