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Advanced removal methods of matter difficult to coagulate during drinking water treatment
Sichrová, Kateřina
Nowadays, drinking water treatment (DWT) is becoming more and more challenging due to the increasing anthropogenic pollution as well as due to the impacts of climate change. Water sources commonly comprise a cocktail of undesirable substances, the removal of which by the conventional DWT process based on coagulation/flocculation is often insufficient. This dissertation deals with advanced removal methods, particularly adsorption, usable for difficult to coagulate substances during DWT. Particular emphasis is placed on removing manganese, algal organic matter (AOM), and per- and polyfluorinated alkyl substances (PFAS). Additionally, in the case of emerging anthropogenic pollutants, attention was also paid to their occurrence and interactions in water. As part of the research, a new TiO2-based adsorbent was synthesized for Mn2+ removal. Since the prepared adsorbent showed high Mn2+ removal efficiency in a much wider range of pH values compared to the conventional demanganization method, which requires very high pH values, it could serve as a suitable alternative demanganization method. Regarding the removal of AOM, the influence of solution properties on its adsorption onto different types of granular activated carbon (GAC) was thoroughly investigated. It was found that the efficiency of AOM...
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Advanced removal methods of matter difficult to coagulate during drinking water treatment
Fialová, Kateřina ; Pivokonský, Martin (advisor) ; Mašín, Pavel (referee) ; Brányik, Tomáš (referee)
Nowadays, drinking water treatment (DWT) is becoming more and more challenging due to the increasing anthropogenic pollution as well as due to the impacts of climate change. Water sources commonly comprise a cocktail of undesirable substances, the removal of which by the conventional DWT process based on coagulation/flocculation is often insufficient. This dissertation deals with advanced removal methods, particularly adsorption, usable for difficult to coagulate substances during DWT. Particular emphasis is placed on removing manganese, algal organic matter (AOM), and per- and polyfluorinated alkyl substances (PFAS). Additionally, in the case of emerging anthropogenic pollutants, attention was also paid to their occurrence and interactions in water. As part of the research, a new TiO2-based adsorbent was synthesized for Mn2+ removal. Since the prepared adsorbent showed high Mn2+ removal efficiency in a much wider range of pH values compared to the conventional demanganization method, which requires very high pH values, it could serve as a suitable alternative demanganization method. Regarding the removal of AOM, the influence of solution properties on its adsorption onto different types of granular activated carbon (GAC) was thoroughly investigated. It was found that the efficiency of AOM...
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