Visible light assisted photocatalytic mineralization of Reactive Red 180 using colloidal TiO2 and oxone

Kuriechen, Selma K.; Murugesan, S.; Raj, Samuel Paul; Maruthamuthu, P.

doi:10.1016/j.cej.2011.09.024

Cited by 40 publications

(20 citation statements)

References 46 publications

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“…Furthermore, the presence of humid acid has positive effect on degradation of acid orange 7 under UV-Vis/TiO 2 /PMS. Similar results were reported by Kuriechen et co-workers [79], where the photodegration rate of textile dyes such as reactive red 180 (RR180) increased by 10-fold adding peroxymonosulfate (e.g., oxone) in the UV-Vis/TiO 2 system. Other hybrid systems coupling microwave irradiation with catalyst/PMS have been reported to have a positive effect on P-nitrophenol removal (PNP) [80].…”

Section: Hybrid Advanced Oxidation Processes Based On Sulfate Radicalssupporting

confidence: 78%

Sulfate Radical Technologies as Tertiary Treatment for the Removal of Emerging Contaminants from Wastewater

2017

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Abstract:Water scarcity and water pollution is a worldwide problem and has driven research into eco-friendly and low-energy cost efficient remediation. The reuse of wastewater for non-potable purpose after proper treatment is the only sustainable solution to the problem. Advanced oxidation processes (AOP) based on the in-situ generation of hydroxyl radicals have been intensively investigated for this purpose as a treatment step to achieve wastewater reuse. The main degradation mechanism of AOPs is based on the reaction of hydroxyl radicals with dissolved organic matter. However, hydroxyl radicals follow unselective multi-step pathways, limiting their efficiency in complex environmental matrices. To overcome such limitations, AOP treatment, based on generation of sulfate radicals, has been developed and widely investigated. This current mini-review will cover the most recent developments regarding emerging contaminant removal, i.e., organic micropollutants, using sulfate radicals generated by active persulfate or peroxymonosulfate, with a focus on an application to wastewater effluents for possible wastewater reuse.

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Section: Hybrid Advanced Oxidation Processes Based On Sulfate Radicalssupporting

confidence: 78%

Sulfate Radical Technologies as Tertiary Treatment for the Removal of Emerging Contaminants from Wastewater

2017

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“…The photodegradation of most organic compounds is described by the pseudo first-order reaction that follows the LangmuirHinshelwood (LÀH) kinetic model [28,29,[32][33][34].…”

Section: Photocatalytic Degradation Kinetics Modelmentioning

confidence: 99%

“…In order to avoid self-degradation of test pollutant in the solar light irradiation, the rhodamine B (RhB) photodegradation in aqueous solution was selected as the test reaction considering that RhB is stable in the visible light region [26,27]. Kinetic parameters of the selected photocatalytic reaction were estimated using the Langmuir-Hinshelwood model (L-H), most frequently used kinetic model for determination of the heterogeneous photocatalytic degradation of organic dyes [28,29].…”

Section: Introductionmentioning

confidence: 99%

Solar light induced rhodamine B degradation assisted by TiO2–Zn–Al LDH based photocatalysts

Hadnadjev-Kostic

Vulic

Marinković‐Nedučin

2014

Advanced Powder Technology

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“…Degussa P25 TiO 2 exhibited less than 60 % decolorization only in 60 min. In our earlier report (Kuriechen et al 2011), we demonstrated (through photocurrent measurement technique) that the degradation of RR180 in the presence of neat TiO 2 and visible light proceeds through the photosensitized electron injection to the conduction band and not through direct excitation of neat TiO 2 . C-TiO 2 exhibits higher photocatalytic activity than neat TiO 2 due to the existence of both the effects in it (i.e., photosensitized electron injection to the conduction band as well as direct excitation of C-TiO 2 by visible light).…”

Section: Crystal Phase Composition Of C-tio 2 Nanoparticlesmentioning

confidence: 97%

“…The enhancement in the reaction rate observed with the increase in the amount of catalyst weight is due to the increase in the number of dye molecules adsorbed and also due to the increase in the density of particles in the area of illumination. A decline in the rate of reaction observed beyond the optimum catalyst dosage may be due to high light reflectance by the catalyst particles and decrease in light penetration (Kuriechen et al 2011). Further .…”

Section: Effect Of Catalyst Loadingmentioning

confidence: 98%

Carbon-Doped Titanium Dioxide Nanoparticles Mediated Photocatalytic Degradation of Azo Dyes Under Visible Light

Kuriechen

Murugesan

2013

Water Air Soil Pollut

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Visible-light active carbon-doped titanium dioxide (C-TiO 2 ) powders were prepared through sol-gel method and were characterized using powder X-ray diffraction and UV-vis diffuse reflectance spectroscopy techniques. Photocatalytic activity of the prepared catalyst toward the photodegradation of azo dyes, Reactive Red 180 and Reactive Red 141, in the presence of visible light was evaluated. C-TiO 2 exhibited enhanced degradation of the dyes compared to Degussa P25 TiO 2 nanoparticles. The potential of sulfate radical-producing oxidants (oxone (potassium peroxomonosulfate, PMS), potassium peroxodisulfate) in improving photodegradation of model pollutants has been studied in detail. More than 95 % decolorization of model pollutants was achieved within 20 min in the presence of PMS and the prepared catalyst. The effectiveness of the process has been evaluated by measuring the degree of mineralization of the total organic carbon, a complementary indicator of the treatment efficiencies.

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Visible light assisted photocatalytic mineralization of Reactive Red 180 using colloidal TiO2 and oxone

Cited by 40 publications

References 46 publications

Sulfate Radical Technologies as Tertiary Treatment for the Removal of Emerging Contaminants from Wastewater

Sulfate Radical Technologies as Tertiary Treatment for the Removal of Emerging Contaminants from Wastewater

Solar light induced rhodamine B degradation assisted by TiO2–Zn–Al LDH based photocatalysts

Carbon-Doped Titanium Dioxide Nanoparticles Mediated Photocatalytic Degradation of Azo Dyes Under Visible Light

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