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Options eliminate odors in sewer network
Žíla, Radim ; Malaník,, Stanislav (referee) ; Hluštík, Petr (advisor)
The diploma thesis focuses on the possibility of removing odor on the sewer network. The first part of the research describes how the odor is generally perceived and what legislation regulates its quantity in the air. The second part of the research focuses on problems of formation of smelting sulfate on the sewer network. This section describes the formation of sulfane as a major component of odor. Further disclosed are methods for its removal, and the ways in which the odor is measured. The practical part deals with laboratory testing of pre-selected fillings in order to determine their ability to remove odorous sulfane. In the second part, on-line measurements are made to determine the causes of sulphan formation in a given location.
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Utilization possibilities of industry gypsum and secondary materials containing for preparation of composites
Weiglová, Jana ; Šoukal, František (referee) ; Opravil, Tomáš (advisor)
The work studies the possibilities of the utilization of secondary raw materials produced by power industry. It addresses mainly the gypsum by-products and fluidized coal combustion ash. As for the secondary raw materials the content of sulphites is observed and the dependences of their transformation to sulphides via natural oxidation by air oxygen or by addition of adequate oxidant are studied. The work follows with describing the effect of sulphides contained in raw materials on the mechanical properties of composites prepared from several various matrices such as alumina or portland cement, lime or portland clinker. As for pure portland clinker the ability to retard the setting is also observed. The amount of contained sulphites is measured volumetrically via indirect titration of iodine surplus by sodium thiosulphate with the starch size as the indicator.
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Development of electrophoretic method for determination of sulphate in blood plasma
Hnízdilová, Lucie ; Křížek, Tomáš (advisor) ; Hraníček, Jakub (referee)
Cílem této bakalářské práce bylo vyvinout metodu pro stanovení síranů v krevní plazmě pomocí kapilární zónové elektroforézy. Byla použita křemenná kapilára o vnitřním průměru 50 μm a efektivní délce 41,5 cm. Plazmatické proteiny byly sráženy acetonitrilem. Jako optimální základní elektrolyt byla určena 0,4M kyselina mravenčí s 15mM chromanem draselným. Separační napětí bylo 25 kV. Vzorek byl dávkován napětím -5 kV po dobu 40 s. K vyhodnocení byla využita nepřímá UV detekce při 260 nm. Vzhledem ke složité matrici je vhodné provést kvantifikaci metodou standardního přídavku. Po vztažení ploch píků na vnitřní standard (500μM chlorečnany) byla relativní směrodatná odchylka 5,97 %. Výhodou této metody oproti dříve používaným srážecím metodám je krátká doba analýzy a jednodušší úprava vzorku. Klíčová slova kapilární elektroforéza, anorganické ionty, sírany, krevní plazma
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Options eliminate odors in sewer network
Žíla, Radim ; Malaník,, Stanislav (referee) ; Hluštík, Petr (advisor)
The diploma thesis focuses on the possibility of removing odor on the sewer network. The first part of the research describes how the odor is generally perceived and what legislation regulates its quantity in the air. The second part of the research focuses on problems of formation of smelting sulfate on the sewer network. This section describes the formation of sulfane as a major component of odor. Further disclosed are methods for its removal, and the ways in which the odor is measured. The practical part deals with laboratory testing of pre-selected fillings in order to determine their ability to remove odorous sulfane. In the second part, on-line measurements are made to determine the causes of sulphan formation in a given location.
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Utilization possibilities of industry gypsum and secondary materials containing for preparation of composites
Weiglová, Jana ; Šoukal, František (referee) ; Opravil, Tomáš (advisor)
The work studies the possibilities of the utilization of secondary raw materials produced by power industry. It addresses mainly the gypsum by-products and fluidized coal combustion ash. As for the secondary raw materials the content of sulphites is observed and the dependences of their transformation to sulphides via natural oxidation by air oxygen or by addition of adequate oxidant are studied. The work follows with describing the effect of sulphides contained in raw materials on the mechanical properties of composites prepared from several various matrices such as alumina or portland cement, lime or portland clinker. As for pure portland clinker the ability to retard the setting is also observed. The amount of contained sulphites is measured volumetrically via indirect titration of iodine surplus by sodium thiosulphate with the starch size as the indicator.
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