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Publikācija: Electrical Conductive TinO2n-1 Ceramic Extraction and Use for Water Treatment with Electrolysis

Publication Type Conference paper
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language Electrical Conductive TinO2n-1 Ceramic Extraction and Use for Water Treatment with Electrolysis
Field of research 2. Engineering and technology
Sub-field of research 2.4 Chemical engineering
Authors Madars Reimanis
Agnese Pūra
Juris Mālers
Līga Bērziņa-Cimdiņa
Jurijs Ozoliņš
Keywords titanium oxide; electrolysis; ceramics
Abstract The ceramic electrodes were obtained from titanium oxide (anataz) mass by the way of extrusion with the thermal treatment at 1100oC temperature following and without oxygen medium at pressure 6.6·10-3 Pa. The obtained samples have necessary electrical properties determined by nonstoichiometric structure and the concentration of defects in TinO2n-1 crystal grating connected with it. The obtained electrodes were used for forming electrolytic cell. Increasing the number of electrodes into cell to 9 at permanent current level (0.1 A) the resistance of cell decreases, but the amount of chlorine, which is delivered in the process of electrolysis, stays permanent, specific current work decreases from 288.8 J/mgCl2 till 108.3 J/mgCl2. To carry out electrolysis with constant current density (8.1mA/m2) and increasing the number of electrodes, the released amount of chlorine increases 3.5 times, but specific current work 2.7 times. By increasing another ions concentration in the solution and flow velocity, the amount of released chlorine in the electrolytic cell decreases. It was demonstrated that the electrolysis of water at dynamic conditions influences significantly the possible growth of microorganisms. After 5 days electrolyses with current level at least 0.05 A in the treated water the bacteria Pseudomonas fluorescenscolony forming units were not detected.
Reference Reimanis, M., Pūra, A., Mālers, J., Bērziņa-Cimdiņa, L., Ozoliņš, J. Electrical Conductive TinO2n-1 Ceramic Extraction and Use for Water Treatment with Electrolysis. In: Electroceramics XII Conference, Norway, Trondheim, 13-16 June, 2010. Trondheim: Norwegian University of Science and Technology, 2010, pp.151-151.
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ID 8282