New nanocomposites for deep water deoxygenation

Keywords: Metal-polymer nanocomposites, Water deoxygenation, Hygiene requirements, Economic efficiency

Abstract

New metal-polymer nanocomposites for deep water deoxygenation have been obtained and studied. A macro- and monoporous sulphocation exchanger with a nanometer pore size was used as the polymer matrix, and the metal was nanodispersed copper deposited in the pores of the matrix. A specific feature of the studied nanocomposites is their sodium ionic form, which eliminates the possibility of the formation of soluble copper oxidation products. The established linear dependence of the copper capacity on the number of cycles of ion-exchange saturation - chemical deposition shows that the process of metal deposition into the pores of the matrix does not have significant obstacles during 10 cycles and contributes to the production of high-capacity samples.
The high efficiency and duration of the life cycle of high-capacity copper ion exchanger nanocomposites have been shown. Experimental studies of water deoxygenation in column-type apparatus with a nanocomposite nozzle were confirmed by a theoretical analysis of the process dynamics. Experimental data and theoretical calculations showed the deep level of water deoxygenation had practically unchanged values of pH and electrical conductivity. Residual oxygen can be controlled and does not exceed 3 μg/l (ppb).
The hygienic and economic substantiation of the expediency of using the obtained nanocomposites is provided. The necessity of using modern nanocomposite metal-polymer materials for deep water deoxygenation circulating in technological systems was analysed. When using this innovation, the metal components of the distribution facilities will be protected from corrosion and, therefore, the hygienic requirements for the water quality of centralised drinking water supply systems will be ensured. Deep chemical water deoxygenation using copper ion-exchange polymer nanocomposites in sodium form
allows solving the problem of the corrosion resistance of metals, ensuring that water meets hygienic requirements on a large scale.
The competitive advantage of the considered water deoxygenation system in comparison with the known systems is the rejection of the use of precious metals-catalysts (palladium, platinum), pure hydrogen, and complex design solutions. The proposed new nanocomposite installation for water deoxygenation is characterised by its ease of use and can be built into a filter system for water purification.
SWOT analysis of the advantages and disadvantages of the proposed method of water deoxygenation showed that its main advantages are the high oxygen capacity of the nanocomposite, low residual oxygen content (3 ppb (μg/l)) in the water, and ease of operation of the deoxygenator. Calculations of the economic efficiency of the nanocomposite have been carried out. The breakeven point is reached when producing only ~100 l of nanocomposite and a volume of sales ~1,600,000 roubles, above which a profit can be obtained. The payback period for an investment of ~15,000,000 roubles is rather short and will not exceed 2 years.

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Author Biographies

Tatyana E. Fertikova, Voronezh State Medical University named after N. N. Burdenko, 10 Universitetskaya pl., Voronezh 394036, Russian Federation

PhD in Medicine, Associate
Professor of the Department of General Hygiene,
Voronezh State Medical University, Voronezh, Russian
Federation; e-mail: tefertikova@vrngmu.ru

Sergey V. Fertikov, Voronezh State University, 1 Universitetskaya pl., Voronezh 394018, Russian Federation

Student of the Department of
Economics and Management of Organizations,
Voronezh State University, Voronezh, Russian
Federation; e-mail: fertikov.sergei@yandex.ru

Ekaterina M. Isaeva, Voronezh State University, 1 Universitetskaya pl., Voronezh 394018, Russian Federation

PhD in Economic, Associate
Professor of the Department of Economics and
Management of Organizations, Voronezh State
University, Voronezh, Russian Federation; e-mail: ekisaeva@yandex.ru

Vyacheslav A. Krysanov, Voronezh State University, 1 Universitetskaya pl., Voronezh 394018, Russian Federation

PhD in Chemistry,
Associate Professor of the Department of Physical
Chemistry, Voronezh State University, Voronezh,
Russian Federation; e-mail: krysanov@chem.vsu.ru

Tamara A. Kravchenko, Voronezh State University, 1 Universitetskaya pl., Voronezh 394018, Russian Federation

DSc in Chemistry, Professor
of the Department of Physical Chemistry, Voronezh
State University, Voronezh, Russian Federation;
e-mail: krav2809837@yandex.ru

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Published
2021-11-24
How to Cite
Fertikova, T. E., Fertikov, S. V., Isaeva, E. M., Krysanov, V. A., & Kravchenko, T. A. (2021). New nanocomposites for deep water deoxygenation. Kondensirovannye Sredy I Mezhfaznye Granitsy = Condensed Matter and Interphases, 23(4), 614-625. https://doi.org/10.17308/kcmf.2021.23/3682
Section
Original articles