Abstract
This study aims to solve the problem of deep destruction of organic pollutants in industrial effluents by creating new composite materials with prescribed functional properties. This paper researches the possibility of using composites based on a polypropylene fiber under conditions of photocatalytic degradation of organic pollutants in aqueous and aqueous-organic media. Dye that are water soluble (eosin, brilliant green, rhodamine C) and fat-soluble (blue, yellow and red) have been chosen as organic contaminants. Composites based on the polypropylene fiber have been obtained by introducing nanodispersed iron onto the surface of the initial polymer, using ion implantation and super high frequency irradiation methods. The obtained composites are characterized, and their photocatalytic activity is studied with respect to the pollutants under study in the conditions of the Fenton-like system and visible radiation. The results show that the obtained composite materials are effective catalysts for oxidative photodestruction of organic dyes in aqueous and aqueous-organic media, and their decolorization degree reaches 80–100%.
Highlights
Environmental pollution, including sources of water supply, represents a severe environmental problem that adversely affects human health
In our previous work [21,22,23,24,25,26], we showed that the composites, obtained by modifying natural sorbents by metal ions (Mn+ ), exhibited high catalytic activity in conditions of UVI
It is difficult to assume how the absence of porosity and a small value of the specific surface will influence the photocatalytic activity of the composites during oxidative destruction of surface will influence the photocatalytic activity of the composites during oxidative destruction of organic pollutants
Summary
Environmental pollution, including sources of water supply, represents a severe environmental problem that adversely affects human health. Among the most dangerous water pollutants are fat-soluble and water-soluble dyes (the sources of which are textile), waste from the paint and varnish industry, and production waste of finishing materials, cellulose and detergents. The dyes are introduced into natural environments via the wastewaters system, where they harm the life activity of ecosystems and adversely influence the processes of self-purification in bodies of water. Due to this risk, chromaticity is one of the key normative parameters of wastewaters. A sufficiently low level of permissible concentration in water are from 10 to 0.0025 mg/L
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