Title Sinergetinis fotokatalizės poveikis naudojant neterminę plazmą vandens valymo technologijoje /
Translation of Title A synergistic effect of photocatalysis on the non-thermal plasma water treatment technology.
Authors Jankauskas, Jonas
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Pages 49
Keywords [eng] DBD ; plazma ; photocatalysis ; catalizator
Abstract [eng] Waste water contaminated with macromolecular organic pollutants and their treatment is one of the most concerning environmental problems. Various technologies are used for treatment such as biological treatment or precipitation, although these processes generate sludge which must be appropriately treated after or these methods are ineffective. This study used artificially manufactured synthetic wastewater - methylene blue solution. Methylene blue was chosen for several reasons - wide use, color and non-easy degradation. For these synthetic wastewater degradation research a pilot photo-catalyst and the DBI reactor system were designed. Selected TiO2 catalysts were coated on the substrate - the glass tubes and stainless steel sheets. In this study the synthetic wastewater and treated wastewater were used. Wastewater treatment efficiency was measured using different configurations: O3, O3 / UV, O3 / UV / TiO2, UV / TiO2. Decrease of methylene blue concentration and chemical oxygen consumption were chosen for efficiency determination. The DBD reactor ozone yield were from 1.87 to 3.99 mg/L at power range from 22.7 to 81.6 W. The maximum up to 70 % efficiency measured by UV/VIS spectrophotometry analysis for treated synthetic methylene blue waste water were achieved using glass based catalyst–ozone–UV system and 40 % by COD analysis while using only ozone treated synthetic waste water the 30 % efficiency by COD were achieved. Based on this study results a higher DBD system efficiency were evident while using ozonizing together with photo-catalyst.
Dissertation Institution Kauno technologijos universitetas.
Type Master thesis
Language Lithuanian
Publication date 2015