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Úprava vody s využitím kapacitní deionizační jednotky
Hucková, Katarína ; Mergl, Václav (oponent) ; Repková, Martina (vedoucí práce)
Vzhľadom na rastúci globálny deficit kvalitnej vody a súvisiace environmentálne výzvy, je kľúčové vyvíjať a optimalizovať udržateľné metódy úpravy vody. Táto práca sa zameriava na kapacitnú deionizáciu (CDI), pokročilú technológiu odstraňovania iónov z vody, ktorá využíva elektrické pole na adsorpciu a desorpciu iónov na elektródach. Experimentálna časť práce bola venovaná detailnému skúmaniu rôznych cyklov CDI s ohľadom na efektivitu odstránenia vybraných iónov a porovnaniu s legislatívnymi normami pre pitnú vodu. Výsledky naznačujú, že CDI predstavuje efektívnu metódu na znižovanie koncentrácií iónov ako sú chloridy, amónne ióny, vápenaté a horečnaté ióny. Práca taktiež poukazuje na dôležitosť pravidelných preplachov a regenerácie elektród, aby sa udržala ich účinnosť a dlhodobá stabilita systému. Výsledky potvrdzujú funkčnosť technológie kapacitnej deionizácie a jej aplikáciu v rôznych priemyselných a environmentálnych kontextoch, čo je v súlade s celosvetovými výskumami v tejto rýchlo sa rozvíjajúcej oblasti.
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Interaction of Ibuprofen with Different Soil Types
Krajňáková, Soňa ; Enev, Vojtěch (oponent) ; Klučáková, Martina (vedoucí práce)
This thesis focuses on the problem of interaction of ibuprofen with soil system. Described are basic properties, behaviour of ibuprofen and factors influencing this behaviour. In general, the most influential factors are soil organic matter content and pH. Ibuprofen belongs in group of non-steroidal anti-inflammatory drugs. It is highly available drug consumed in high amounts each year. This contributes to its increasing transport and contamination of the environment. Its presence in the environment can have negative effects on the living organisms. In the experimental part studied was an influence of organic matter content in soil and pH on sorption and desorption of ibuprofen. Used were three soils acquired from different regions in the Czech Republic. The experiment was conducted with ibuprofen concentrations from 1 to 10 mg/l. The influence of pH was carried out using ibuprofen concentration 10 mg/l and Britton-Robinson buffer with pH of 3, 7 and 10. Recorded was the concentration of Ibuprofen after each cycle using UV-VIS spectrophotometry and liquid chromatography coupled with mass spectrometry detection.
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Interaction of Ibuprofen with Different Soil Types
Krajňáková, Soňa ; Enev, Vojtěch (oponent) ; Klučáková, Martina (vedoucí práce)
This thesis focuses on the problem of interaction of ibuprofen with soil system. Described are basic properties, behaviour of ibuprofen and factors influencing this behaviour. In general, the most influential factors are soil organic matter content and pH. Ibuprofen belongs in group of non-steroidal anti-inflammatory drugs. It is highly available drug consumed in high amounts each year. This contributes to its increasing transport and contamination of the environment. Its presence in the environment can have negative effects on the living organisms. In the experimental part studied was an influence of organic matter content in soil and pH on sorption and desorption of ibuprofen. Used were three soils acquired from different regions in the Czech Republic. The experiment was conducted with ibuprofen concentrations from 1 to 10 mg/l. The influence of pH was carried out using ibuprofen concentration 10 mg/l and Britton-Robinson buffer with pH of 3, 7 and 10. Recorded was the concentration of Ibuprofen after each cycle using UV-VIS spectrophotometry and liquid chromatography coupled with mass spectrometry detection.
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