Journal of Siberian Federal University. Engineering & Technologies: Determination of the Relaxation Time of Physico-Chemical Characteristics of Water After Cavitation Treatment

Journal of Siberian Federal University. Engineering & Technologies / Determination of the Relaxation Time of Physico-Chemical Characteristics of Water After Cavitation Treatment

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Issue: Journal of Siberian Federal University. Engineering & Technologies. 2021 14 (5)
Authors: Shelenkova, Veronika V.; Kulagina, Tatiana A.; Stebeleva, Olesya P.; Sapozhnikova, Ekaterina S.
Contact information: Shelenkova, Veronika V.: Siberian Federal University Krasnoyarsk, Russian Federation; Kulagina, Tatiana A.: Siberian Federal University Krasnoyarsk, Russian Federation; tak.sfu@gmail.com; Stebeleva, Olesya P.: Siberian Federal University Krasnoyarsk, Russian Federation; Sapozhnikova, Ekaterina S.: Siberian Federal University Krasnoyarsk, Russian Federation
Keywords: supercavitation; oxygen content; physicochemical properties of water; redox potential; electrical conductivity
Abstract: The results of hydrodynamic treatment of water in the supercavitation mode are presented. Changes in the physicochemical properties of water (electrical conductivity, pH, oxidation-reduction potential (ORP), oxygen content (OCP), etc.) were revealed, the rational duration of cavitation treatment of water was established, and data on the relaxation of these properties were obtained. At the same time, there is an increase in temperature, pH and electrical conductivity, a decrease in ORP and CRC. The time range with the most intense changes in pH and ORP is 30–90 s. The rate of pH and ORP change in the range of 30–90 s is three and two times higher, respectively, than in the range of 90–300 s. These results correlate fairly well with the results of studies of the effect of ultrasound on water. It was found that the maximum pH value is reached under cavitation action for 180 s. The minimum value of ORP takes at 300 s of cavitation treatment, but remains in the area of positive values. It is shown that during the relaxation time, activated water after treatment for 200 min under the used modes of hydrodynamic cavitation treatment does not return to its original state in all measured parameters
Pages: 550–563
DOI: 10.17516/1999-494X-0332
Paper at repository of SibFU: https://elib.sfu-kras.ru/handle/2311/143413

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