The synergistic effect of advanced oxidation processes to eliminate resistant chemical compounds

The aim of this work is the study of application of the synergistic effects of various advanced oxidation processes (AOPs) in waste water treatment. Attention is paid to decomposition of chemical compounds resistant to biodegradation. These chemical compounds are commonly based on pharmaceutical pro...

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Published in:	Surface & coatings technology Vol. 241; pp. 154 - 158
Main Authors:	Horáková, Marta, Klementová, Šárka, Kříž, Pavel, Balakrishna, Syam Krishna, Špatenka, Petr, Golovko, Oksana, Hájková, Pavlína, Exnar, Petr
Format:	Journal Article Conference Proceeding
Language:	English
Published:	Amsterdam Elsevier B.V 25-02-2014 Elsevier
Subjects:	Advanced oxidation processes (AOPs) Applied sciences Atmospherics Chemical compounds Chemicals resistant to biodegradation Corrosion Corrosion environments Cross-disciplinary physics: materials science; rheology Decomposition Dyes Exact sciences and technology Materials science Metals. Metallurgy Oxidation Photocatalysis Physics Surface treatments Synergistic effect Titanium dioxide Wastewater Wastewater treatment Advanced oxidation processes (AOPs) Chemicals resistant to biodegradation Wastewater Photocatalysis Corrosion resistance Surface treatments Oxidation Synergism Waste water
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Summary:	The aim of this work is the study of application of the synergistic effects of various advanced oxidation processes (AOPs) in waste water treatment. Attention is paid to decomposition of chemical compounds resistant to biodegradation. These chemical compounds are commonly based on pharmaceutical products, pesticides, surfactants and dyes. In our contribution, the synergistic effect of simultaneously applied photocatalyst and low temperature atmospheric plasma or UV light on decomposition of model chemicals (Acid Orange 7, Hydrocortisone, Verapamil hydrochloride) was studied. TiO2 was used as the photocatalyst. Model chemicals with photocatalytic active TiO2 were exposed to atmospheric plasma discharge (Gliding Arc) or UV source in order to improve generation of active hydroxyl groups and oxidation processes. The relations between different effects of AOPs during chemicals decomposition process were analyzed. It was observed that decomposition of model chemicals is strongly improved by synergistic effect of: (i) photocatalytic reaction occurring on photocatalyst TiO2, (ii) presence of oxidative radicals, (iii) presence of wide-range UV. •Advanced oxidation processes (AOP) system is able to decompose resistant organic chemicals.•AOP system is based on atmospheric plasma discharge (APD) and TiO2 photocatalyst.•Acid orange 7 and verapamil hydrochloride were successfully decomposed using AOP system.•AOP (photocatalysis) was successfully applied for decomposition of hydrocortisone.•Decomposition is strongly improved by synergistic effect of photocatalysis and APD.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0257-8972 1879-3347
DOI:	10.1016/j.surfcoat.2013.10.068