Advanced Oxidation Process (AOP) for Detoxification of Acid Red 17 Dye Solution and Degradation Mechanism

Advanced Oxidation Process (AOP) for Detoxification of Acid Red 17 Dye Solution and Degradation... This work investigates the degradation mechanism of Acid Red 17 dye (AR-17) using HPLC-MS/MS as well as it studies the feasibility of applying ozone and ultraviolet to detoxify the wastewater containing AR-17 dye. Different parameters such as pH, initial dye concentration and treatment time were evaluated to obtain the optimal degradation conditions. The initial dye concentration and solution pH were the parameters which affected the color removal and the maximum decolorization was obtained at pH 11. A 100% color removal took place after 25 min of O3/UV treatment (for 100 ppm dye concentration). Kinetic analyses of AR-17 dye removal followed the pseudo-first-order kinetics. When ultraviolet (UV) was applied with ozone simultaneously, the first-order rate constant (k dx[O3]l) increased and the time of dye decolorization shortened to 5.5 min for 500 ppm dye concentration. GC-MS and HPLC-MS/MS studies of pre-treated dye solution which were performed during and at the end of the pre-treatment time, showed complete degradation of the AR-17 dye. The obtained results also demonstrated that the UV-ozone treatment process decreased the zooplankton toxicity of the treated AR-17 dye wastewater. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Environmental Processes Springer Journals

Advanced Oxidation Process (AOP) for Detoxification of Acid Red 17 Dye Solution and Degradation Mechanism

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Publisher
Springer International Publishing
Copyright
Copyright © 2018 by Springer International Publishing AG, part of Springer Nature
Subject
Earth Sciences; Environmental Science and Engineering; Environmental Management; Waste Management/Waste Technology; Water Quality/Water Pollution
ISSN
2198-7491
eISSN
2198-7505
D.O.I.
10.1007/s40710-018-0284-9
Publisher site
See Article on Publisher Site

Abstract

This work investigates the degradation mechanism of Acid Red 17 dye (AR-17) using HPLC-MS/MS as well as it studies the feasibility of applying ozone and ultraviolet to detoxify the wastewater containing AR-17 dye. Different parameters such as pH, initial dye concentration and treatment time were evaluated to obtain the optimal degradation conditions. The initial dye concentration and solution pH were the parameters which affected the color removal and the maximum decolorization was obtained at pH 11. A 100% color removal took place after 25 min of O3/UV treatment (for 100 ppm dye concentration). Kinetic analyses of AR-17 dye removal followed the pseudo-first-order kinetics. When ultraviolet (UV) was applied with ozone simultaneously, the first-order rate constant (k dx[O3]l) increased and the time of dye decolorization shortened to 5.5 min for 500 ppm dye concentration. GC-MS and HPLC-MS/MS studies of pre-treated dye solution which were performed during and at the end of the pre-treatment time, showed complete degradation of the AR-17 dye. The obtained results also demonstrated that the UV-ozone treatment process decreased the zooplankton toxicity of the treated AR-17 dye wastewater.

Journal

Environmental ProcessesSpringer Journals

Published: Feb 19, 2018

References

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