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We have previously described how pyrolysis affected the content of selected PFAS representatives.4,5 However, we could not determine with certainty whether they were merely cleaved or mineralised. Therefore, we focused on the change in organic fluorine content (part of PFAS) and analysed its thermal behaviour in inert (sea sand) and heterogeneous (sewage sludge) material.

Our work aimed to describe PFASs behaviour at different pyrolysis temperatures (200 to 700 °C). We analysed 37 PFAS in sewage sludge samples and pyrolysis products. The temperature at which PFASs were removed from the sewage sludge at more than 99.0% was 400 °C, and at 600 °C, removal was more than 99.9%. As a result, it is recommended for commercial sludge pyrolysis units (larger volume, lower material homogeneity) that the process temperature be not lower than 600 °C. This recommendation is supported and demonstrated by the analyses of samples from the Bohuslavice Trutnov WWTP (CZE), where the sludge pyrolysis unit is in operation.\n

In this work, we review relevant thermochemical processes and current product treatment/utilization issues for continuing applied research according to European union strategic calls and industry demand.

The main purpose of the thesis is to introduce a method on how to proceed when migrating a database environment. The first section presents several commercial and noncommercial applications and subsequently the migration method is introduced. This method can achieve a successful data transfer to the new environment. The method is adapted to ERP system database, but after minor adjustments may be used for a large number of databases. During several phases are selected relevant data, restructured using tools and then imported into the target environment. The whole procedure is well documented into log files which can be used to check the process. To validate the data quality a new validation tool was created. It is capable of monitoring whether the data is consistent with company standards.

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

This thesis deals with the transfer of the sudeten Germans and its position in the media agenda of Sudetendeutsche Zeitung Newspaper (2003-2005). Powered by TCPDF (www.tcpdf.org)