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Article

UV-Catalyzed Persulfate Oxidation of an Anthraquinone Based Dye

1
Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 1402/2, 46117 Liberec 1, Czech Republic
2
Department of Water and Wastewater Engineering, Silesian University of Technology, Konarskiego 18, 44-100 Gliwice, Poland
3
Institute of Textile Engineering and Polymer Materials, University of Bielsko-Biala, Willowa 2, 43-309 Bielsko-Biala, Poland
4
Institute of Environmental Protection and Engineering, University of Bielsko-Biala, Willowa 2, 43-309 Bielsko-Biala, Poland
*
Authors to whom correspondence should be addressed.
Catalysts 2020, 10(4), 456; https://doi.org/10.3390/catal10040456
Received: 15 March 2020 / Revised: 20 April 2020 / Accepted: 21 April 2020 / Published: 23 April 2020
(This article belongs to the Special Issue Greener Catalysis for Environmental Applications)
Wastewater from the textile industry has a substantial impact on water quality. Synthetic dyes used in the textile production process are often discharged into water bodies as residues. Highly colored wastewater causes various of problems for the aquatic environment such as: reducing light penetration, inhibiting photosynthesis and being toxic to certain organisms. Since most dyes are resistant to biodegradation and are not completely removed by conventional methods (adsorption, coagulation-flocculation, activated sludge, membrane filtration) they persist in the environment. Advanced oxidation processes (AOPs) based on hydrogen peroxide (H2O2) have been proven to decolorize only some of the dyes from wastewater by photocatalysis. In this article, we compared two very different photocatalytic systems (UV/peroxydisulfate and UV/H2O2). Photocatalyzed activation of peroxydisulfate (PDS) generated sulfate radicals (SO4•−), which reacted with the selected anthraquinone dye of concern, Acid Blue 129 (AB129). Various conditions, such as pH and concentration of PDS were applied, in order to obtain an effective decolorization effect, which was significantly better than in the case of hydroxyl radicals. The kinetics of the reaction followed a pseudo-first order model. The main reaction pathway was also proposed based on quantum chemical analysis. Moreover, the toxicity of the solution after treatment was evaluated using Daphnia magna and Lemna minor, and was found to be significantly lower compared to the toxicity of the initial dye. View Full-Text
Keywords: photocatalysis; dye; UV; peroxydisulfate; advanced oxidation process photocatalysis; dye; UV; peroxydisulfate; advanced oxidation process
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MDPI and ACS Style

Krawczyk, K.; Wacławek, S.; Kudlek, E.; Silvestri, D.; Kukulski, T.; Grübel, K.; Padil, V.V.T.; Černík, M. UV-Catalyzed Persulfate Oxidation of an Anthraquinone Based Dye. Catalysts 2020, 10, 456. https://doi.org/10.3390/catal10040456

AMA Style

Krawczyk K, Wacławek S, Kudlek E, Silvestri D, Kukulski T, Grübel K, Padil VVT, Černík M. UV-Catalyzed Persulfate Oxidation of an Anthraquinone Based Dye. Catalysts. 2020; 10(4):456. https://doi.org/10.3390/catal10040456

Chicago/Turabian Style

Krawczyk, Kamil, Stanisław Wacławek, Edyta Kudlek, Daniele Silvestri, Tomasz Kukulski, Klaudiusz Grübel, Vinod V.T. Padil, and Miroslav Černík. 2020. "UV-Catalyzed Persulfate Oxidation of an Anthraquinone Based Dye" Catalysts 10, no. 4: 456. https://doi.org/10.3390/catal10040456

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