National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Advances in applied research in the field of remediation of contaminated soils
Kratochvílová, Petra ; Innemanová, Petra (advisor) ; Cajthaml, Tomáš (referee)
This thesis summarizes information related to the issue of old ecological burdens and contaminated locations, mostly in the Czech Republic. The most common contaminants occurring in soils of the unsaturated zone, sludges and sediments, and available remediaton methods are characterized. Attention is paid to research and development advances in this field. A methodology was developed for collecting data related to applied research and development projects, from the publicly available CEP, RIV and STARFOS databases and results of these projects were compared. It was found that 54 applied research and development projects in the field of remediation of contaminated soils, sludges and sediments were successfully completed in the Czech Republic in 2010-2021 with a total of 2039 results, of which 464 were results of applied research relevant for this study (hereinafter only applied results), which were results of type P (patent), Z (semi-operation/proven technology), F (utility/functional sample), G (prototype/functional sample), H (results reflected in law regulations and standards), N (methodology/specialized map with expert content) and R (software). These projects were supported by the Technology Agency of the Czech Republic, the Academy of Sciences of the Czech Republic, the Ministry of Industry and...
Importance and occurrence of chromium in hydrogeology
Sadloň, Matúš ; Nedvěd, Jakub (advisor) ; Šantrůček, Jaromír (referee)
in English Chromium, particularly its two most stable oxidation states - hexavalent and trivalent chromium - plays a very significant role in the environment. While trivalent chromium is an essential nutrient both for humans and plants, hexavalent chromium proved to be one of the most dangerous contaminants negatively affecting people and the environment on a wide- ranging scale. This thesis aims to provide a complex overview of chromium occurrence in various natural systems, its physical and chemical properties as well as its mobility in the environment. Furthermore, the thesis will describe two case studies (from Greece and India), which illustrate both the natural and anthropogenic sources of hexavalent chromium contamination. Due to its mutagenic and carcinogenic properties, a complex set of remediation methods was suggested for hexavalent chromium removal, including both in-situ and ex-situ ones. Given their proven record in successful elimination of hexavalent chromium contamination from groundwater, in-situ methods are being utilised far more frequently nowadays; these will be explained more comprehensively. The most notable categories of in- situ remediation methods include biological and chemical reduction, chemical precipitation and chemical sorption. Besides these, other promising...

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