Registration Number
0225U005281,
(0121U109130)
, R & D reports
Title
The research of physical characteristics for the barrierless plasma-chemical reactors and CDI systems, and their practical application
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1. Теоретичні та експериментальні дослідження динаміки розповсюдження хвиль іонізації у стримерному розряді. 2. Створення комплексної CDI-O3 системи обробки води для вилучення іонів важких металів з водних розчинів.
Head
Taran Hryhorii V., к.т.н.
Registration Date
29-12-2025
Organization
National Science Center "Kharkiv Institute of Physics and Technology"
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The goal of research is to study the mechanisms of gas discharge formation and discharge regimes in a gas discharge with a sharply inhomogeneous distribution of electric field and optimization based on these studies, characteristics of the barrierless plasma-chemical reactors of atmospheric pressure. Taking into consideration the fact that discharge formation and discharge regimes are a complex multi-stage processes influenced by many different factors, to achieve the goal of the project, it is necessary to develop the experimental stands to study the individual factors. In particular, the influence of the bias voltage on the dynamics of the bulk charge in the discharge gap will be studied. The optimal power supply parameters for stable and long-term plasma generation and ozone synthesis will be determined. Another direction is the latest highly-efficient technology for extracting heavy metal ions from water solutions, namely, the capacitive deionization technology (CDI), which is sometimes called electrosorption desalination. Due to the CDI technology, which is an alternative to reverse osmosis, dissolved ions can be effectively removed from water. Nitrates and heavy metals can also be removed and water hardness can be reduced. The optimal regimes for sorption/desorption of heavy metal ions depending on the valence of ions, temperature and pH of water solution will be determined.
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The object of study is a complex CDI-O3 water treatment system for the extraction of heavy metal ions from aqueous solutions.
The purpose of the work is to increase the efficiency of CDI systems, to study the time required for the desorption of singly charged and doubly charged ions from carbon fabric. To determine the feasibility of converting doubly charged ions into singly charged ones.
The main scientific results are as follows:
- it was determined for the first time that the time required for the release of doubly charged ions from the carbon fabric of the CDI system is significantly greater than the time in the case of singly charged ions. Otherwise, the accumulation of doubly charged ions in the carbon fabric occurs, which leads to a decrease in the ability of the electrodes to sorption.
- the feasibility of converting doubly charged ions into singly charged ones is shown for the first time. Using the example of a Pb(NO3)2 solution in water, it is shown that the efficiency of removing heavy metal salts using the combined action of ozonation and capacitive deionization is significantly higher than the removal of ions using only a capacitive deionization cell.
Product Description
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Taran Hryhorii V.
Borys B. Kadolin
Sergiy V. Rodionov
Pavlo O. Opaliev
Oleksandr O. Zamuriev
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2025-12-29
