Preliminary Study Into the Decolorization of Selected Dyes By the Ozone Application

Gerulová Kristína (), Sanny Zuzana (), Kucmanová Alexandra () and Buranská Eva ()
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Gerulová Kristína: Slovak university of technology in bratislava, faculty of materials science and technology in trnava, institute of integrated safety, ulica jána bottu 2781/25, 917 24 trnava, Slovak Republic
Sanny Zuzana: Slovak university of technology in bratislava, faculty of materials science and technology in trnava, institute of integrated safety, ulica jána bottu 2781/25, 917 24 trnava, Slovak Republic
Kucmanová Alexandra: Slovak university of technology in bratislava, faculty of materials science and technology in trnava, institute of integrated safety, ulica jána bottu 2781/25, 917 24 trnava, Slovak Republic
Buranská Eva: Slovak university of technology in bratislava, faculty of materials science and technology in trnava, institute of integrated safety, ulica jána bottu 2781/25, 917 24 trnava, Slovak Republic

Research Papers Faculty of Materials Science and Technology Slovak University of Technology, 2021, vol. 29, issue 48, 37-44

Abstract: Synthetic dyes widely used in many kinds of industry affect the colour of wastewater when released to environment due to insufficient treatment in typical sewage treatment plants. Only a small dose of those dyes may significantly affect colour of water and, according to the chemical composition, may pose risks to wildlife and humans. In the research described in this study, decolorization of three various dyes was investigated. Since colour removal of Congo Red such as Methylene blue using ozone have been reported by several authors, and the literature on Naphthol Green B is rather limited, in the present study we compare the decolorization rate of CR, MB and NGB. The colour removal occurred quickly and more than 90% of colour reduction was achieved within 3-6 minutes throughout all tested pH of the solution.

Keywords: Dyes; decolorization; ozone; AOPs; water treatment (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:vrs:repfms:v:29:y:2021:i:48:p:37-44:n:13

DOI: 10.2478/rput-2021-0003

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