Nanopęcherzyki charakteryzują się między innymi dużym stosunkiem powierzchni do objętości, niską prędkością unoszenia w cieczy, a także wysoką różnicą ciśnień po obu stronach powierzchni międzyfazowej.
Keywords in English nanobubbles, electrolysis, size, zeta potentialĪbstract in Polish Nanopęcherzyki posiadają wiele właściwości, które pozwoliłyby ulepszyć i zintensyfikować procesy w przemyśle, hodowlach organizmów żywych oraz medycynie. Paweł Sobieszuk, Department of Biotechnology and Bioprocess Engineering ( FCPE/DBBE) Faculty of Chemical and Process Engineering ( FCPE) Keywords in Polish nanopęcherzyki, elektroliza, rozmiar, potencjał zeta Mariusz Zalewski, Department of Separation Processes ( FCPE/DSP) Faculty of Chemical and Process Engineering ( FCPE) Paweł Sobieszuk ( FCPE/DBBE) Paweł Sobieszuk, Department of Biotechnology and Bioprocess Engineering ( FCPE/DBBE) Faculty of Chemical and Process Engineering ( FCPE)Ĭertifying unit Faculty of Chemical and Process Engineering ( FCPE) Affiliation unit Department of Biotechnology and Bioprocess Engineering ( FCPE/DBBE) Study subject / specialization Inżynieria Chemiczna i Procesowa Language (pl) Polish Radosław Jeżak, Faculty of Chemical and Process Engineering ( FCPE) Title in Polish Badanie procesu wytwarzania nanopęcherzyków gazów w wyniku elektrolizy It was also shown that the zeta potential of oxygen nanobubbles is only significantly influenced by the concentration of salt used, and no parameters have statistically significant impact on the zeta potential of hydrogen nanobubbles. It was found that all process parameters influence the size of hydrogen and oxygen nanobubbles, but the only statistically significant parameter is the salt concentration. In the last stage of the research, 4 electrolysis processes with variable current were carried out, which increased or decreased in a stepwise or linear manner. Next, 10 additional electrolysis processes were carried out with the same concentration of salt and the time of the process. 30 electrolysis processes were carried out, repeating twice the Box-Behnken plan, consisting of 15 experiments. The diameter and zeta potential of the nanobubbles produced was investigated using a Malvern ZetaSizer Nano ZS.
The intensity of the current was generated by means of potentiostat controlled by the AtlasCorr software. For this purpose, a dedicated electrolyser was used, in which the electrodes and needles were submerged latter were used to collect samples. This work focuses on investigating the process of producing hydrogen and oxygen nanobubbles by electrolysis and determining the influence of process parameters, such as current density, salt concentration and process time on the size and zeta potential of the produced nanobubbles. All these features intensify the process of mass transfer between gas and liquid. Nanobubbles are characterized, inter alia, high surface to volume ratio, low velocity in the liquid, as well as a high pressure difference on both sides of the interface. Examination of the process of production of gas nanobubbles as a result of electrolysisĪbstract Nanobubbles have many properties that would improve and intensify processes in industry, living matter cultures and medicine.