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Low-Pressure Discharge Plasma Treatment of Aqueous Solutions with Mn, Cr and Fe

Oleksandr Pivovarov1, Tetiana Derkach2, Margarita Skiba1
Affiliation: 
1 Department of Inorganic Substances and Ecology, Ukrainian State University of Chemical Technology, 8, Gagarina Ave., 49005 Dnipro, Ukraine 2 Department of Industrial Pharmacy, Kyiv National University of Technologies and Design, 2, Nemirovicha-Danchenko St., 01011 Kyiv, Ukraine derkach.tm@knutd.edu.ua
DOI: 
https://doi.org/10.23939/chcht13.03.317
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Abstract: 
The effect of low-pressure glow discharge on the formation of peroxide and the degree of oxidation of Mn, Cr and Fe was studied in the aqueous solutions of different compounds. The plasma treatment causes the reduction of Mn(VII) through Mn(IV) to Mn(II), Cr(VI) to Cr(III) and oxidation of Fe(II) to Fe(III). Among other reactive species, peroxide formed under the action of plasma treatment takes an active part in redox reactions. The concentration of peroxide usually increases with treatment time, but its presence is detected only after completion of active redox processes.
References: 

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