Effluents of cotton dyeing process of textile industry is considered as extremely polluted due to presence of unfixed azo dyes and auxiliary chemicals. The complex aromatic structure and non-biodegradability nature of azo dyes involved new and efficient treatment technologies to eliminate intense color from textile wastewater. In recent years, in-situ chemical oxidation technology (ISCO) using persulfate (S2O82-) as an oxidant has appeared to be a promising method for removal of azo dyes. S2O82- can be activated by UV, heat or transition metals to generate sulfate radical (SO4-). In this study, decolorization of Reactive Red 239 (RR239) azo dye via heat activated S2O82- was explored. Experiments were conducted in a cylindrical batch reactor equipped with a water jacket. Effect of parameters such as temperature, pH and S2O82- concentration on decolorization of RR239 was investigated. The results show that decolorization efficiency was enhanced with increasing temperature from 45 to 55°C but further increase in temperature did not enhance decolorization. The pseudo first order rate constant values fit well Arrhenius equation, yielding an activation energy of 108.75 kJ mol-1 for decolorization of RR239. The highest decolorization efficiency was obtained at pH=3 under the tested pH range. As S2O82- concentration increased decolorization efficiency increased. 89.67% and 39.05% decolorization and aromatic degradation efficiencies were observed within 120 minutes of reaction time, respectively. These results show that heat activated S2O82- method was a feasible method for decolorization of RR239.
| Published in | American Journal of Physical Chemistry (Volume 7, Issue 3) |
| DOI | 10.11648/j.ajpc.20180703.11 |
| Page(s) | 45-49 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2018. Published by Science Publishing Group |
Heat Activated Persulfate, Sulfate Radical, Azo Dye, Decolorization
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APA Style
Ozlem Esen Kartal. (2018). Decolorization of Reactive Red 239 Via Heat Activated Persulfate. American Journal of Physical Chemistry, 7(3), 45-49. https://doi.org/10.11648/j.ajpc.20180703.11
ACS Style
Ozlem Esen Kartal. Decolorization of Reactive Red 239 Via Heat Activated Persulfate. Am. J. Phys. Chem. 2018, 7(3), 45-49. doi: 10.11648/j.ajpc.20180703.11
AMA Style
Ozlem Esen Kartal. Decolorization of Reactive Red 239 Via Heat Activated Persulfate. Am J Phys Chem. 2018;7(3):45-49. doi: 10.11648/j.ajpc.20180703.11
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Download@article{10.11648/j.ajpc.20180703.11,
author = {Ozlem Esen Kartal},
title = {Decolorization of Reactive Red 239 Via Heat Activated Persulfate},
journal = {American Journal of Physical Chemistry},
volume = {7},
number = {3},
pages = {45-49},
doi = {10.11648/j.ajpc.20180703.11},
url = {https://doi.org/10.11648/j.ajpc.20180703.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpc.20180703.11},
abstract = {Effluents of cotton dyeing process of textile industry is considered as extremely polluted due to presence of unfixed azo dyes and auxiliary chemicals. The complex aromatic structure and non-biodegradability nature of azo dyes involved new and efficient treatment technologies to eliminate intense color from textile wastewater. In recent years, in-situ chemical oxidation technology (ISCO) using persulfate (S2O82-) as an oxidant has appeared to be a promising method for removal of azo dyes. S2O82- can be activated by UV, heat or transition metals to generate sulfate radical (SO4-). In this study, decolorization of Reactive Red 239 (RR239) azo dye via heat activated S2O82- was explored. Experiments were conducted in a cylindrical batch reactor equipped with a water jacket. Effect of parameters such as temperature, pH and S2O82- concentration on decolorization of RR239 was investigated. The results show that decolorization efficiency was enhanced with increasing temperature from 45 to 55°C but further increase in temperature did not enhance decolorization. The pseudo first order rate constant values fit well Arrhenius equation, yielding an activation energy of 108.75 kJ mol-1 for decolorization of RR239. The highest decolorization efficiency was obtained at pH=3 under the tested pH range. As S2O82- concentration increased decolorization efficiency increased. 89.67% and 39.05% decolorization and aromatic degradation efficiencies were observed within 120 minutes of reaction time, respectively. These results show that heat activated S2O82- method was a feasible method for decolorization of RR239.},
year = {2018}
}
TY - JOUR T1 - Decolorization of Reactive Red 239 Via Heat Activated Persulfate AU - Ozlem Esen Kartal Y1 - 2018/10/09 PY - 2018 N1 - https://doi.org/10.11648/j.ajpc.20180703.11 DO - 10.11648/j.ajpc.20180703.11 T2 - American Journal of Physical Chemistry JF - American Journal of Physical Chemistry JO - American Journal of Physical Chemistry SP - 45 EP - 49 PB - Science Publishing Group SN - 2327-2449 UR - https://doi.org/10.11648/j.ajpc.20180703.11 AB - Effluents of cotton dyeing process of textile industry is considered as extremely polluted due to presence of unfixed azo dyes and auxiliary chemicals. The complex aromatic structure and non-biodegradability nature of azo dyes involved new and efficient treatment technologies to eliminate intense color from textile wastewater. In recent years, in-situ chemical oxidation technology (ISCO) using persulfate (S2O82-) as an oxidant has appeared to be a promising method for removal of azo dyes. S2O82- can be activated by UV, heat or transition metals to generate sulfate radical (SO4-). In this study, decolorization of Reactive Red 239 (RR239) azo dye via heat activated S2O82- was explored. Experiments were conducted in a cylindrical batch reactor equipped with a water jacket. Effect of parameters such as temperature, pH and S2O82- concentration on decolorization of RR239 was investigated. The results show that decolorization efficiency was enhanced with increasing temperature from 45 to 55°C but further increase in temperature did not enhance decolorization. The pseudo first order rate constant values fit well Arrhenius equation, yielding an activation energy of 108.75 kJ mol-1 for decolorization of RR239. The highest decolorization efficiency was obtained at pH=3 under the tested pH range. As S2O82- concentration increased decolorization efficiency increased. 89.67% and 39.05% decolorization and aromatic degradation efficiencies were observed within 120 minutes of reaction time, respectively. These results show that heat activated S2O82- method was a feasible method for decolorization of RR239. VL - 7 IS - 3 ER -
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