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Advanced catalytic oxidation process based on a Ti-permanganate (Mn/Ti-H(+)) reaction for the treatment of dye wastewater

This article discusses the titanium (Ti)-based permanganate advanced catalytic oxidation process (ACOP) for the possible recovery of thousands of tons of dye wastewater. The heterogeneous catalyst TiO(2) in the solid state employed in the liquid phase reaction mixture with dye and potassium permanga...

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Autores principales: Azmat, Rafia, Khursheed, Anum, Saleem, Ailyan, Qamer, Noshab
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9075581/
https://www.ncbi.nlm.nih.gov/pubmed/35542253
http://dx.doi.org/10.1039/c9ra03045j
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author Azmat, Rafia
Khursheed, Anum
Saleem, Ailyan
Qamer, Noshab
author_facet Azmat, Rafia
Khursheed, Anum
Saleem, Ailyan
Qamer, Noshab
author_sort Azmat, Rafia
collection PubMed
description This article discusses the titanium (Ti)-based permanganate advanced catalytic oxidation process (ACOP) for the possible recovery of thousands of tons of dye wastewater. The heterogeneous catalyst TiO(2) in the solid state employed in the liquid phase reaction mixture with dye and potassium permanganate was recovered and reused several times for reproducible results. The kinetics were examined at various operational parameters like the effect of dyes, the effect of oxidants, the amount of catalysts, and the effect of acids, temperature, and various organic and inorganic additives used in the textile industry. The kinetics of advanced oxidation and the mechanism of dye de-coloration and degradation were monitored using the Congo red (CR) dye as a model in an aqueous medium and then applied to other dyes and real dye wastewater samples. The color removal was up to 98%, with the removal efficiency being linear with the dose at a particular time. This method could exhibit the complete color removal of the dye wastewater, leading to mineralization coupled with a change in the oxidation state of Mn from +7 to +2. The method also improved the BOD/COD ratio, followed by an increase in the salinity of the recycled water. This indicated that this method can be used not only for the highly efficient de-colorization of dye wastewater but also as a preliminary step for the utilization of the dye wastewater after its recycling. The newly developed system was proven to be very cost-effective and eco-friendly with low sludge quantity, which contained numerous nitrogenous compounds, and this was validated by FTIR and HPLC analyses; thus, the system may be used in treatment plants for the recovery of wastewater.
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spelling pubmed-90755812022-05-09 Advanced catalytic oxidation process based on a Ti-permanganate (Mn/Ti-H(+)) reaction for the treatment of dye wastewater Azmat, Rafia Khursheed, Anum Saleem, Ailyan Qamer, Noshab RSC Adv Chemistry This article discusses the titanium (Ti)-based permanganate advanced catalytic oxidation process (ACOP) for the possible recovery of thousands of tons of dye wastewater. The heterogeneous catalyst TiO(2) in the solid state employed in the liquid phase reaction mixture with dye and potassium permanganate was recovered and reused several times for reproducible results. The kinetics were examined at various operational parameters like the effect of dyes, the effect of oxidants, the amount of catalysts, and the effect of acids, temperature, and various organic and inorganic additives used in the textile industry. The kinetics of advanced oxidation and the mechanism of dye de-coloration and degradation were monitored using the Congo red (CR) dye as a model in an aqueous medium and then applied to other dyes and real dye wastewater samples. The color removal was up to 98%, with the removal efficiency being linear with the dose at a particular time. This method could exhibit the complete color removal of the dye wastewater, leading to mineralization coupled with a change in the oxidation state of Mn from +7 to +2. The method also improved the BOD/COD ratio, followed by an increase in the salinity of the recycled water. This indicated that this method can be used not only for the highly efficient de-colorization of dye wastewater but also as a preliminary step for the utilization of the dye wastewater after its recycling. The newly developed system was proven to be very cost-effective and eco-friendly with low sludge quantity, which contained numerous nitrogenous compounds, and this was validated by FTIR and HPLC analyses; thus, the system may be used in treatment plants for the recovery of wastewater. The Royal Society of Chemistry 2019-11-19 /pmc/articles/PMC9075581/ /pubmed/35542253 http://dx.doi.org/10.1039/c9ra03045j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Azmat, Rafia
Khursheed, Anum
Saleem, Ailyan
Qamer, Noshab
Advanced catalytic oxidation process based on a Ti-permanganate (Mn/Ti-H(+)) reaction for the treatment of dye wastewater
title Advanced catalytic oxidation process based on a Ti-permanganate (Mn/Ti-H(+)) reaction for the treatment of dye wastewater
title_full Advanced catalytic oxidation process based on a Ti-permanganate (Mn/Ti-H(+)) reaction for the treatment of dye wastewater
title_fullStr Advanced catalytic oxidation process based on a Ti-permanganate (Mn/Ti-H(+)) reaction for the treatment of dye wastewater
title_full_unstemmed Advanced catalytic oxidation process based on a Ti-permanganate (Mn/Ti-H(+)) reaction for the treatment of dye wastewater
title_short Advanced catalytic oxidation process based on a Ti-permanganate (Mn/Ti-H(+)) reaction for the treatment of dye wastewater
title_sort advanced catalytic oxidation process based on a ti-permanganate (mn/ti-h(+)) reaction for the treatment of dye wastewater
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9075581/
https://www.ncbi.nlm.nih.gov/pubmed/35542253
http://dx.doi.org/10.1039/c9ra03045j
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