<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>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.</p>
</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.

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

Slovak university of technology in bratislava, faculty of materials science and technology in trnava

Research Papers Faculty of Materials Science and Technology Slovak University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Synthetic dyes widely used in many kinds of industry affect the colour of wastewater when released to environment due to insufficient treatment in typical...

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

Published Online: Aug 05, 2021

Page range: 37 - 44

Received: Apr 19, 2021

Accepted: May 27, 2021

DOI: https://doi.org/10.2478/rput-2021-0003

Keywords
Dyes, decolorization, ozone, AOPs, water treatment

© 2021 Kristína Gerulová et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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

Published Online: Aug 05, 2021

Page range: 37 - 44

Received: Apr 19, 2021

Accepted: May 27, 2021

DOI: https://doi.org/10.2478/rput-2021-0003

KeywordsDyes, decolorization, ozone, AOPs, water treatment

© 2021 Kristína Gerulová et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Dyes, decolorization, ozone, AOPs, water treatment