Comparing the ZnO/Fe(VI), UV/ZnO and UV/Fe(VI) processes for removal of Reactive Blue 203 from aqueous solution

Talaiekhozani, Amirreza; Banisharif, Farhad; Bazrafshan, Maryam; Eskandari, Zeinab; Chaleshtari, Abbas Heydari; Moghadam, Ghasem; Amani, Ali Mohammad

doi:10.15171/ehem.2019.04

Cited by 8 publications

(3 citation statements)

References 45 publications

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“…Therefore, these results showed that the best contact time was 15 minutes for the removal of Reactive Blue 203 dye using UV radiation. Similar results were reported by Talaiekhozani et al (37). They investigated the removal of Reactive Blue 203 dye from wastewater using UV radiation and reported that the best contact time for dye removal using UV radiation was around 15 minutes.…”

Section: The Effect Of Contact Timesupporting

confidence: 87%

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Comparison of Reactive Blue 203 Dye Removal Using Ultraviolet Irradiation, Ferrate (VI) Oxidation Process and MgO Nanoparticles

Talaiekhozani

Torkan²,

Banisharif

et al. 2018

Avicenna J Environ Health Eng

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This study investigated the effect of various parameters on the removal of Reactive Blue 203 dye from wastewater using ferrate(VI) oxidation process, ultraviolet radiation (UV) radiation and MgO nanoparticles under batch mode. Although several studies have been carried out on dye removal, there is no study on the removal of Reactive Blue 203 dye using ferrate(VI) oxidation process, UV radiation, and MgO nanoparticles. Therefore, the aim of this study is to investigate the effect of different factors including pH, temperature, contact time, the intensity of UV radiation and the concentration of MgO nanoparticles on Reactive Blue 203 dye removal using the above-mentioned methods. The results showed that the best pH values for dye removal using UV radiation, ferrate(VI), and MgO nanoparticles were 13, 1 and 13, respectively. The best temperature for Reactive Blue 203 dye removal using ferrate(VI) was 50°C. Hence, temperature variation had no significant effect on Reactive Blue 203 dye removal using UV irradiation and absorption by MgO nanoparticles. Based on the results, the best contact time was 15 minutes using UV radiation. The removal of Reactive Blue 203 dye using ferrate(VI) oxidation process was a quick reaction, and in a fraction of a second, the reactions were completed. The results showed that dye removal using MgO nanoparticles could be described by the Temkin isotherm. Therefore, the contact time was not considered as an effective parameter. In addition, the maximum dye removals were 95, 85 and 94% using UV irradiation, ferrate(VI) and MgO nanoparticles.

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Section: The Effect Of Contact Timesupporting

confidence: 87%

“…In alkaline conditions, the concentration of hydroxyl ion (OH -) increase and the concentration of H 3 O + decrease (37). For this reason, UV radiation is more effective in alkaline condition.…”

Section: Resultsmentioning

confidence: 99%

Comparison of Reactive Blue 203 Dye Removal Using Ultraviolet Irradiation, Ferrate (VI) Oxidation Process and MgO Nanoparticles

Talaiekhozani

Torkan²,

Banisharif

et al. 2018

Avicenna J Environ Health Eng

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“…The removal of certain dyes by UV radiation alone has been reported [36,37]. This means that a significant amount of some dyes, such as acid orange 7 dye, can be removed from water under UV radiation [38].…”

Section: Effect Of Amount Of Zno-ndmentioning

confidence: 99%

Application of ZnO-Nd Nano-Photocatalyst for the Reactive Red 198 Dye Decolorization in the Falling-Film Photocatalytic Reactor

Biglar

Talaiekhozani²,

Aminsharei

et al. 2021

Toxics

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A large amount of Reactive red 198 (RR198) is released yearly into the environment. RR198 is toxic for human and aquatic creatures; therefore, it should be removed from wastewater before releasing into the environment. In this study, the nano ZnO-Nd -photo-catalyst for the first time was synthesized by the combustion method. First, the physical characteristics of the generated nano photocatalyst were evaluated using FESEM, XRD, Bandgap calculation, and FTIR analysis. Then, the ZnO-Nd nano-photocatalyst was suspended into the contaminated water with RR198 dye in a falling-film photocatalytic reactor. The effects of parameters such as the amount of H2O2, catalyst dose, pH, and initial concentration of dye were investigated during the experiments. Finally, the decolorization process with the falling-film photocatalytic reactor was optimized using response surface methodology (RSM). The physical characteristics showed that the average particle size of the synthesized ZnO-Nd was 40 nm. Doping ZnO with Nd reduced the photocatalyst energy bandgap by 14%. The results indicated that the optimum amount of catalyst dose and pH level was 0.1 g/L and 5, respectively. The simultaneous usage of H2O2 and ZnO-Nd with an H2O2/dye ratio of two increased dye removal performance by 90%. The results demonstrated that the developed equations can be applied to predict the performance of the falling-film photoreactor. This study showed that using the nano ZnO-Nd photocatalyst in a falling-film photocatalytic reactor under optimum operating conditions is an appropriate way to remove RR198 from water.

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Study of dye desorption mechanism of bone char utilizing different regenerating agents

et al. 2020

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Comparing the ZnO/Fe(VI), UV/ZnO and UV/Fe(VI) processes for removal of Reactive Blue 203 from aqueous solution

Cited by 8 publications

References 45 publications

Comparison of Reactive Blue 203 Dye Removal Using Ultraviolet Irradiation, Ferrate (VI) Oxidation Process and MgO Nanoparticles

Comparison of Reactive Blue 203 Dye Removal Using Ultraviolet Irradiation, Ferrate (VI) Oxidation Process and MgO Nanoparticles

Application of ZnO-Nd Nano-Photocatalyst for the Reactive Red 198 Dye Decolorization in the Falling-Film Photocatalytic Reactor

Study of dye desorption mechanism of bone char utilizing different regenerating agents

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