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	Methods of sewage sludge treatment for agricultural applications with respect to micropollutants Vítková, M. ; Komárek, M. ; Wickramasinghe, N. ; Pohořelý, Michael ; Moško, Jaroslav ; Hušek, Matěj ; Cajthaml, Tomáš ; Grasserová, Alena ; Čechmánková, J. ; Vácha, R. ; Zimová, M. The aim of the methodology is to describe the possibilities of sewage sludge treatment by composting and pyrolysis for the application in agriculture, with particular respect to the so-called micropollutants, but also to conventional pollutants, and to assess the risks of treated sludge for the soil environment and the uptake of (micro)pollutants by cultivated crops. The methodology is based on the results from laboratory and field experiments of a three-year project and on a critical approach to sludge as a potentially hazardous waste on the one hand and a recyclable source of nutrients on the other. Detailed record
	Overview of technologies for sludge treatment and phosphorus recycling Pohořelý, Michael ; Moško, Jaroslav ; Hušek, Matěj ; Šyc, Michal This report examines the management of sewage sludge. The first part describes the advantages and obstacles to the use of sewage sludge for fertiliser purposes. The later part describes and evaluates four relevant sewage sludge management options, i.e., direct agricultural use, composting, incineration and pyrolysis, including an assessment of their advantages and disadvantages. Detailed record
	Effect of particle size of high-temperature biochar on its properties Sedmihradská, Anežka ; Skoblia, S. ; Beňo, Z. ; Moško, Jaroslav ; Fajgar, Radek ; Soukup, Karel ; Pohořelý, Michael High-temperature biochar is an increasingly used soil amendment, especially in areas where the physical properties of the soil need to be improved. This ecologically promising material has so far been studied mainly in relation to production temperature or the input material. The effects of particle size on the properties of biochar have so far been studied insufficiently. This work seeks to expand the knowledge in this particular area. \n Plný tet: PDF Detailed record
	Comparison of properties of biochars based on different types of sewage sludge. Moško, Jaroslav ; Beňo, Z. ; Hušek, Matěj ; Komárek, M. ; Vítková, M. ; Pohořelý, Michael The application of sewage sludge to agricultural land is an increasingly debated topic, particularly because of the precautionary principle regarding the content of inorganic, organic and microbial pollutants. One of the practices treatment/treatment of sludge prior to land application is pyrolysis, whereby \nbiochars are produced from the sewage sludge, which, provided that proper process management, stable and free from organic and microbial \ncontamination. The aim of this paper was to verify the properties of biochars from sewage sludge that were subjected to different types of stabilization. The sludges were pyrolyzed at temperatures ranging from 600 to 650 °C and a certain correlation was found between degree of sludge stabilization and biochar properties (textural properties, elemental composition, energy value). \n\n Plný tet: PDF Detailed record
	Legislation for sewage sludge management in selected EU countries: Germany, Austria, France Pohořelý, Michael ; Hušek, Matěj ; Moško, Jaroslav ; Šyc, Michal This report examines the approach of three selected European countries (Germany, Austria and France - as commissioned by the MoE staff) to the treatment of sewage sludge applied to agricultural land. The first part summarises the legislative limits and compares them with those of the EU and the Czech Republic. The following parts are devoted to a description of the legislation and a deeper understanding of the individual sludge measures in the countries of interest. Detailed record
	Production and characterization of high-temperature biochar. Sedmihradská, Anežka ; Skoblia, S. ; Beňo, Z. ; Moško, Jaroslav ; Pohořelý, Michael Thermochemical conversion of biomass produces solid residue that is further used in agriculture called biochar. Studied biochar was produced in twin-fire two-staged gasifier from waste wood biomass. Heat and electricity were produced together with biochar. Biochar samples were analysed and assessed as a soil amendment. Results were compared to legal standards and voluntary certificate limits. It was concluded that studied biochar meet all criteria for utilization as a soil amendment. Plný tet: PDF Detailed record
	Experimental methodology for studying the behaviour of perfluoroalkyl compounds during sewage sludge pyrolysis Hušek, Matěj ; Skoblia, S. ; Moško, Jaroslav ; Beňo, Z. ; Semerád, Jaroslav ; Cajthaml, Tomáš ; Pohořelý, Michael One of the waste management options of stabilised sewage sludge is its treatment by pyrolysis. Pyrolysis units are suitable for sewage sludge treatment with low-heavy metal content, but their suitability for various organic pollutants removal contained in sludge is under investigation. In this paper, we discuss the issue of per- and polyfluoroalkyl substances (PFASs) (organic pollutants) in sewage sludge and the development of a methodology for the experimental determination of PFASs behaviour during sewage sludge pyrolysis in order to determine practical pyrolysis conditions for the treatment of sewage sludge containing PFASs.\n\n Plný tet: PDF Detailed record
	Physico-Chemical Properties of Sludge-Char. Moško, Jaroslav We studied pyrolysis of dry stabilized sewage sludge in a fixed bed reactor at temperatures 400, 500, 600, 700 and 800 °C in inert helium atmosphere. The material and energy balances were evaluated and the sludge-chars were analyzed by multiple analytical tools to evaluate their physical and chemical properties.3,4 Additional spectroscopy analyses were performed on sludge-chars to prove some hypotheses based on basic characterization and to study suitability of the techniques for studying such materials.\n\n Fulltext: content.csg - PDF Plný tet: SKMBT_C22019053108341 - PDF Detailed record
	Use of Sodium Bicarbonate for Flue Gas Treatment in Small Scale. Zach, Boleslav ; Pohořelý, Michael ; Šyc, Michal ; Svoboda, Karel ; Václavková, Šárka ; Moško, Jaroslav ; Brynda, Jiří ; Punčochář, Miroslav The trend of reduction of landfilling can lead, especially in areas with low population density, to the need to build new waste-to-energy capacities in the form of small units. However, flue gas treatment in small scale has to be sufficiently simple to decrease capital costs and allow the construction of such facilities. For that reason, the possibility of one-step dry flue gas treatment at compromise conditions was investigated as well as the limitation of flue gas composition.\n\n Fulltext: PDF Detailed record
	Material and Energy Utilization of Dry Stabilized Sewage Sludge. Pohořelý, Michael ; Moško, Jaroslav ; Šyc, Michal ; Václavková, Šárka ; Skoblia, S. ; Beňo, Z. ; Svoboda, Karel 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 legislation. Fulltext: content.csg - PDF Plný tet: SKMBT_22318062813490 - PDF Detailed record

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