Staf, M. - Search Results - Digital Repository

guest :: login Digital Repository
		Search		Submit		Help		About

Home > Search Results: Staf, M.

Search:

Search Tips :: Advanced Search

Search collections:

Sort by:	Display results:	Output format:

	Influence of sorbent type on dehalogenation of reducing gas without condensing fraction. Šrámek, Vít ; Skoblia, S. ; Staf, M. ; Beňo, Z. ; Pohořelý, Michael Chemical recycling of plastics is one of possible option to process large amount of currently difficultly recycled plastic waste. It would be possible to fulfil goals of the amount of recycled waste by means of chemical recycling. Principle of chemical recycling is conversion of plastic waste to basic hydrocarbon substance that could be used in refineries or petrochemical industry. The main technological challenge is the presence of halogens in plastic waste (in plastics as substances containing chlorine in form of PVC or brome in form of additives/flame retardants). During chemical recycling via pyrolysis, these substances can transfer to products and cause problems in succeeding technologies (corrosion, poisoning of catalysts etc.). One of the solutions how to eliminate these unwanted substances could be high temperature sorption of primal pyrolysis gas on sorbents before its condensation. Experiments with model gas containing halogenated compounds and different inorganic sorbents were conducted for this purpose. Gained results allowed us to narrow down the amount of sorbents suitable for high temperature removal of halogenated compounds from primal pyrolysis gas produced during pyrolysis of plastics. Plný tet: PDF Detailed record
	Utilization of waste from processing of industrial hemp for production of carbonaceous adsorbents. Šrámek, V. ; Staf, M. ; Pohořelý, Michael ; Beňo, Z. Utilization of waste biomass for production of carbonaceous adsorbents would be a suitable substitution of comercially available activated carbon. This work focuses on a two step preparation in two separate apparatus of own construction operated at UCT Prague. The first step involves pyrolysis of the hemp hurd at temperature range 450–850 °C and the second step is based on activation of the pyrolysis residue via steam at temperatures 740 and 800 °C. The prepared activated material was examined for key sorption parameters: specific surface are by BET equation, total specific pore volume and pore size distribution. The results were compared to comercially available activated carbon produced also via the steam activation. Fulltext: content.csg - PDF Plný tet: SKMBT_C22020012013491 - PDF Detailed record
	Biochar Preparation in Quality of Activated Carbon via Pyrolysis of Hemp Waste Šrámek, V. ; Staf, M. ; Pohořelý, Michael The paper describes the preparation of adsorbents with the properties of activated carbon from biomass waste. Prime feedstock are hemp stems and a referential material is hardwood. The preparation is divided in two phases. The first phase includes pyrolysis in the temperature range 450-850 °C in the horizontal furnace and in the second phase the pyrolysed material is activated with steam and carbon dioxide in a vertical reactor. Finally, biochar was analyzed and relevant properties including BET surface and pore size distribution were determined to appoint suitable operational conditions for the biochar production in quality of activated carbon.\n Fulltext: content.csg - PDF Plný tet: SKMBT_C22019040809400 - PDF Detailed record

Interested in being notified about new results for this query?
Subscribe to the RSS feed.

Digital Repository :: :: :: ::
Powered by v1.1.2
Maintained by

This site is also available in the following languages:
Česky English