Electric Discharge Water Treatment Technologies and Criteria of Expediency of Their Use

Bereka, V.O.; Kondratenko, I.P.

doi:10.15407/publishing2021.58.090

Cited by 4 publications

(1 citation statement)

References 14 publications

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“…The high-voltage electro-discharge treatment is based on the phenomenon of the electrohydraulic effect. The principle of the appearance of the electrohydraulic effect is the phenomenon of a sharp increase in the hydraulic and hydrodynamic effects and the amplitude of the shock action during the implementation of a pulsed electric discharge in an ion-conducting liquid, provided that the pulse duration is maximally shortened, the pulse front is as steep as possible, and the pulse shape is close to the aperiodic [20]. The main operating factors of the electrohydraulic effect are:…”

Section: Introductionmentioning

confidence: 99%

Investigation of the yield of biologically active substances during the ultrasound and electro-discharge extraction of medicinal herbs of the foothills of the North Caucasus

Neftullayeva¹,

Azimova

Maskurova

et al. 2023

Potr. S. J. F. Sci.

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Biologically active components are present in plants in small quantities. There are many different extraction methods, which can be used for their extraction. In this scientific work, extracts of three plants (common origanum, peppermint and garden sage) were prepared in three different ways: water extraction, ultrasound extraction and electro-discharge extraction. The dynamics of saturation of extracts with flavonoids, essential oils and organic acids for each case were studied within 48 hours after the experiment's start. The conducted studies have confirmed the effectiveness of electro-discharge extraction in comparison with ultrasound and in comparison with water extraction. Forty-eight hours after the start of the experiment, 7-15% more organic acids, flavonoids and essential oils were observed in extracts of the studied plants obtained after electro-discharge treatment than in water extracts. A similar dynamic can be traced in the assessment of all indicators. At the same time, 80% readiness of extracts in the case of electro-discharge treatment was observed already 30 minutes after the start of the experiment. Similar indicators (80% of the maximum) were achieved after 24 hours of water extraction and after 2 hours with ultrasound treatment. Thus, the electro-discharge treatment allows you to obtain higher-quality and more enriched active substance extracts in a much shorter time. At the same time, electro-discharge treatment has a significant list of disadvantages described in detail in this article.

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Section: Introductionmentioning

confidence: 99%

Investigation of the yield of biologically active substances during the ultrasound and electro-discharge extraction of medicinal herbs of the foothills of the North Caucasus

Neftullayeva¹,

Azimova

Maskurova

et al. 2023

Potr. S. J. F. Sci.

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Matching of Compatible Work of Short High-Voltage Pulses of Tension Generator and Water Treatment Chamber by Dint of Pulse Barrier Discharge

Bereka¹,

Kondratenko²

2021

Praci Inst. elektrodin. Nac. akad. nauk Ukr.

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A technique for calculating the parameters of a magnetic switch as an element of a generator of short high-voltage pulses of tension to coordinate its compatible work with a water treatment chamber by dint of pulse barrier discharge is shown. The expediency and efficiency of using such a switch as an element that, by shunting, the discharge chamber, discharges the barrier to the arrival of the next voltage pulse has been confirmed. It is proved that with the accepted geometrical dimensions of the discharge chamber and the amplitude of the pulse voltage, provided that the magnetic switch is present that it is possible to increase the practical use of electricity by ~ 40% due to that which was accumulated in the dielectric barrier in one discharge. Ref.10, fig. 5.

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Electrostatic Field in a Barrier Discharge Chamber for Water Purification Considering Individual Water Droplets

Kryshchuk

2024

Praci Inst. elektrodin. Nac. akad. nauk Ukr.

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The use of pulsed dielectric barrier discharge (DBD) for water purification via low-temperature plasma (LTP) is a promising technology. DBD enables the purification of water in a droplet-film state from organic contaminants by generating highly reactive molecules (OH radicals, O, H2O2, and O3 molecules) produced in LTP upon contact with water. A two-dimensional model was developed to calculate the electrostatic field in the DBD discharge chamber (DC), which includes two electrodes, a dielectric barrier, two water droplets or streams in the air gap, and water films. The model employs Laplace’s equation for the electrostatic field with periodic boundary conditions. Expressions were proposed for determining the length of the symmetric part of the DC and setting the voltage on the electrodes with a constant droplet surface area and a constant average electric field intensity in the air gap, independent of droplet radius. The study investigates the dependence of the electrostatic field energy and DC capacitance on the droplet radius and their mutual positioning along the DC length. Changes in electrode voltage and droplet density per unit DC length relative to droplet radius are demonstrated. An analysis of the electric field distribution, DC capacitance, and stored energy was conducted. The average electric field intensity on the surfaces of droplets and water films was examined. The electric forces acting on the droplets were determined using Maxwell's stress tensor. An expression was derived for calculating the recommended amount of water in the form of droplets or streams per unit dimensions of the DC to achieve a more uniform distribution of the electric field intensity within the DC and to minimize the impact of electric forces on the droplets. Ref. 18, fig. 7.

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Electric Discharge Water Treatment Technologies and Criteria of Expediency of Their Use

Cited by 4 publications

References 14 publications

Investigation of the yield of biologically active substances during the ultrasound and electro-discharge extraction of medicinal herbs of the foothills of the North Caucasus

Investigation of the yield of biologically active substances during the ultrasound and electro-discharge extraction of medicinal herbs of the foothills of the North Caucasus

Matching of Compatible Work of Short High-Voltage Pulses of Tension Generator and Water Treatment Chamber by Dint of Pulse Barrier Discharge

Electrostatic Field in a Barrier Discharge Chamber for Water Purification Considering Individual Water Droplets

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