Number of found documents: 1953
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Laboratory Pyrolysis Experiments of Pelleted Digestate (PS) and Extracted Sunflower Scrap (ES).
Pohořelý, Michael; Skoblia, S.; Beňo, Z.; Hartman, Miloslav
2021 - Czech
In the report, there are results of laboratory pyrolysis analysis of pelleted digestate and extracted sunflower scrap.\n Ve zprávě jsou výsledky laboratorních pyrolýzních testů peletizovaného separátu a extrahovaného slunečnicového šrotu. Keywords: biomass; pyrolysis; biochar Available at various institutes of the ASCR
Laboratory Pyrolysis Experiments of Pelleted Digestate (PS) and Extracted Sunflower Scrap (ES).

In the report, there are results of laboratory pyrolysis analysis of pelleted digestate and extracted sunflower scrap.\n

Pohořelý, Michael; Skoblia, S.; Beňo, Z.; Hartman, Miloslav
Ústav chemických procesů, 2021

Microplastics and their removal from water using sorbents.
Spáčilová, Markéta; Dytrych, Pavel; Krejčíková, Simona; Fajgar, Radek; Šolcová, Olga
2020 - Czech
The occurrence of contaminants in water sources, microplastics or other organic pollutants, has been an increasing environmental problem. This issue is related to mapping of their occurrence in an aquatic environment and with finding of possible ways regarding their elimination. The prepared microplastic particles of five most-frequently used plastics (polyethylene, polyamide, polytetrafluoroethylene, polyethylene glycol terephthalate and polystyrene) were characterized by the scanning electron microscopy (SEM), the Raman spectroscopy and the infrared spectroscopy (IR). The obtained microplastic particles were used for preparation of simulated water contaminated with microplastics. The prepared simulated samples of water contaminated with microplastics were used for the development of a methodology for determining the number of contained microplast particles. Furthermore, the possibilities of a microplastic removal from simulated samples by sorbents based on natural bentonites and zeolites were tested. It was confirmed that the effectiveness of sorbents depends on their composition and textural properties and could be increased by their modification. Zvýšený výskyt cizorodých látek ve vodních zdrojích, ať už mikroplastů či dalších jiných organických kontaminantů je v současné době stále se zvyšující environmentální problém. Tato problematika úzce souvisí se zmapováním jejich výskytu ve vodním prostředí, a dále také s možnými způsoby jejich odstranění. V rámci práce byla nejprve provedena charakterizace připravených mikroplastových částic pěti nejčastěji používaných plastů (polyethylen, polyamid, polytetrafluorethylen, polyethylenglykoltereftalát a polystyren) pomocí skenovací elektronové mikroskopie (SEM), Ramanovy spektroskopie a infračervené spektroskopie (IČ). Tyto mikroplastové částice byly použity pro přípravu simulovaných vod kontaminovaných mikroplasty. Připravené simulované vzorky vod kontaminovaných mikroplasty byly využity pro vývoj metodiky určení počtu obsažených částic mikroplastů. Dále byly testovány možnosti odstranění mikroplastů ze vzorků pomocí sorbentů na bázi přírodních bentonitů a zeolitů. Bylo potvrzeno, že účinnost sorbentů závisí na jejich složení a texturních vlastnostech a může být zvýšena pomocí jejich modifikace. Keywords: bentonity; microplastics; sorption Available in digital repository of the ASCR
Microplastics and their removal from water using sorbents.

The occurrence of contaminants in water sources, microplastics or other organic pollutants, has been an increasing environmental problem. This issue is related to mapping of their occurrence in an ...

Spáčilová, Markéta; Dytrych, Pavel; Krejčíková, Simona; Fajgar, Radek; Šolcová, Olga
Ústav chemických procesů, 2020

Laboratory Pyrolysis Experiments of Pelleted Sunflower Harvesting Residues and Grain Harvesting Residues.
Pohořelý, Michael; Skoblia, S.; Beňo, Z.; Hartman, Miloslav
2020 - Czech
In the report there are results of laboratory pyrolysis analysis of pelleted sunflower harvesting residues and grain harvesting residues. Ve zprávě jsou výsledky laboratorních pyrolýzních testů peletizovaných sklizňových zbytků slunečnice a posklizňových zbytků zrnin. Keywords: biomass; pyrolysis; biochar Available at various institutes of the ASCR
Laboratory Pyrolysis Experiments of Pelleted Sunflower Harvesting Residues and Grain Harvesting Residues.

In the report there are results of laboratory pyrolysis analysis of pelleted sunflower harvesting residues and grain harvesting residues.

Pohořelý, Michael; Skoblia, S.; Beňo, Z.; Hartman, Miloslav
Ústav chemických procesů, 2020

Materiálové a energetické využití suchého stabilizovaného čistírenského kalu.
Pohořelý, Michael
2019 - Czech
The paper describes the need for change in the way of sewage sludge disposal in the Czech Republic. The main reason for the change is the amendment to the current Czech and European legislation. Příspěvek popisuje nutnost úpravy kalové koncovky či/a způsobu nakládání s čistírenskými kaly (ČK) v České republice. Hlavním důvodem pro úpravu je změna stávající legislativy ČR a EU. Keywords: fluid combustion; ash; fertilizer Available in a digital repository NRGL
Materiálové a energetické využití suchého stabilizovaného čistírenského kalu.

The paper describes the need for change in the way of sewage sludge disposal in the Czech Republic. The main reason for the change is the amendment to the current Czech and European legislation.

Pohořelý, Michael
Ústav chemických procesů, 2019

Magnesium Silicide and Germanide from Electronic Waste as a Source of CVD Precursors for Potential Catalysts Preparation.
Bumba, Jakub
2019 - English
This work is focused on the regeneration of silicon and germanium from electronic waste and on the possibility of intermediate products utilization e.g. for chemical vapour deposition (CVD) and catalysis. Keywords: electronic waste; silicon and germanium; catalysts preparation Available in a digital repository NRGL
Magnesium Silicide and Germanide from Electronic Waste as a Source of CVD Precursors for Potential Catalysts Preparation.

This work is focused on the regeneration of silicon and germanium from electronic waste and on the possibility of intermediate products utilization e.g. for chemical vapour deposition (CVD) and ...

Bumba, Jakub
Ústav chemických procesů, 2019

Five Years of Aerosol Particles Growth Rate Measurements at Four Background Stations in the Czech Republic.
Holubová Šmejkalová, Adéla
2019 - English
In this work we used data on aerosol particle number size distribution to investigate if there are any differences or similarities in the growth rate at four background stations located in different types of environment (urban, industrial, agricultural and suburban). Keywords: atmospheric aerosols; model simulations; background stations Available in a digital repository NRGL
Five Years of Aerosol Particles Growth Rate Measurements at Four Background Stations in the Czech Republic.

In this work we used data on aerosol particle number size distribution to investigate if there are any differences or similarities in the growth rate at four background stations located in different ...

Holubová Šmejkalová, Adéla
Ústav chemických procesů, 2019

Synthetic Pathways Leading to Phosphahelicenes.
Beránek, Tomáš
2019 - English
The goal of this work is to explore possible synthetic ways leading to these new members of the helicene family.\n Keywords: sythetic way; phosphorus; helicenes Available in a digital repository NRGL
Synthetic Pathways Leading to Phosphahelicenes.

The goal of this work is to explore possible synthetic ways leading to these new members of the helicene family.\n

Beránek, Tomáš
Ústav chemických procesů, 2019

Dialytic Separation of Anions from DMSO Solution Facilitated by dendritic Receptors.
Cuřínová, Petra; Winkler, Maximilian; Krupková, Alena; Budka, J.; Wun, Ch.N.; Blechta, Vratislav; Červenková Šťastná, Lucie; Sýkora, Jan; Strašák, Tomáš
2019 - English
As the dialytic tubing is impermeable for big molecules of receptor, the anions crossing the barrier of dialytic tubing to form complex with the receptor stay entrapped inside and can be removed from the solution. NMR methods were used to study the complexation properties of given receptors as well as to determine the concentration changes during dialytic experiments. Keywords: anions; receptor; dialytic experiments Available in a digital repository NRGL
Dialytic Separation of Anions from DMSO Solution Facilitated by dendritic Receptors.

As the dialytic tubing is impermeable for big molecules of receptor, the anions crossing the barrier of dialytic tubing to form complex with the receptor stay entrapped inside and can be removed from ...

Cuřínová, Petra; Winkler, Maximilian; Krupková, Alena; Budka, J.; Wun, Ch.N.; Blechta, Vratislav; Červenková Šťastná, Lucie; Sýkora, Jan; Strašák, Tomáš
Ústav chemických procesů, 2019

Influence of Surface Treatment of Thin-Film Composite Membrane on Separation of Carbon Dioxide from Biogas.
Morávková, Lenka; Kárászová, Magda; Petrusová, Zuzana; Izák, Pavel
2019 - English
The effect of the various wetting procedure on the membrane performance was studied [1]. Spraying is clearly more efficient than spreading water on the top of the membrane with a brush and results in higher methane purity. Spraying ensures a more uniform distribution of the water on the skin layer of the membrane, leading to much higher CO2 permeation through the membrane and higher CH4 content in the retentate stream. Keywords: biogas; separation; carbon dioxide Available in a digital repository NRGL
Influence of Surface Treatment of Thin-Film Composite Membrane on Separation of Carbon Dioxide from Biogas.

The effect of the various wetting procedure on the membrane performance was studied [1]. Spraying is clearly more efficient than spreading water on the top of the membrane with a brush and results in ...

Morávková, Lenka; Kárászová, Magda; Petrusová, Zuzana; Izák, Pavel
Ústav chemických procesů, 2019

Hydrotreating over Silica-Alumina Supported Catalysts
Gulková, Daniela; Vít, Zdeněk; Kaluža, Luděk
2019 - English
They are studied for possible use in deep hydrodesulfurization (HDS)1 while they have not been investigated for the HDS parallel with hydrodeoxygenation (HDO)2. The aim was to find the effect of active phase and support of Pd and PdPt catalysts on activity and selectivity in HDS of 4,6-dimethyldibenzothiophene (DMDBT) and HDS/HDO of l-benzothiophene/octanoic acid (BT/OA). Keywords: catalysts; silica-alumina; hydrodesulfurization Available in a digital repository NRGL
Hydrotreating over Silica-Alumina Supported Catalysts

They are studied for possible use in deep hydrodesulfurization (HDS)1 while they have not been investigated for the HDS parallel with hydrodeoxygenation (HDO)2. The aim was to find the effect of ...

Gulková, Daniela; Vít, Zdeněk; Kaluža, Luděk
Ústav chemických procesů, 2019

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