Photodegradation of Reactive Black 5 in a ZnO/UV slurry membrane reactor

Laohaprapanon, Sawanya; Matahum, Jefunnie; Tayo, Lemmuel L.; You, Sheng‐Jie

doi:10.1016/j.jtice.2014.11.017

Cited by 64 publications

(37 citation statements)

References 22 publications

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“…At higher amounts of catalyst the region of plateau continue and rate of reaction became constant, where screening effect is generated when the quantity of catalyst is very high. Same results for dyes removal were found for metal oxides such as TiO 2 , ZnO and Fe 2 O 3 [19][20][21].…”

Section: Effect Of Zno Concentrationsupporting

confidence: 63%

Photodegradation of Alizarin Black S Dye Using Zinc Oxide

Salim¹

2015

JESE-A

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Zinc oxide (ZnO) has been used as heterogeneous catalyst for the degradation of Acid Alizarin Black S dye (AAB) in aqueous solutions using UV light irradiation. Experiments were conducted at various operating parameters. The operating parameters were amount of catalyst (50 mg, 100 mg and 150 mg), initial concentration of dye (30 mg/L, 50 mg/L and 70 mg/L), the pH of solution (2, 4, 6, 8, 10 and 12) and the UV light intensity (6 watt and 12 watt). The progress of the degradation reaction was monitored spectrophotometrically. It was found that the degradation process of AAB solution was accelerated with increased catalyst dosage and decreased initial concentration of AAB. It was also found that the removal efficiency of AAB significantly depend on pH value of solution. The results show that the degradation percent reaches the highest values with pH close to neutral. The data proved that removal percent of dye decreased when 6 watt lamp used instead of 12 watt lamp. The kinetic study confirmed that photocatalytic degradation of AAB dye follows a pseudo first order reaction rate.

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Section: Effect Of Zno Concentrationsupporting

confidence: 63%

Photodegradation of Alizarin Black S Dye Using Zinc Oxide

Salim¹

2015

JESE-A

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“…Configuration of photoreactors used for leachate treatment Several reactor models have been proposed and utilized in lab scale and pilot scale based TiO 2 photocatalytic experiments. For example, annular photoreactor [52] falling film flow reactor [35], slurry membrane reactor [53], thin film cascade photoreactor [54] etc. (Fig 4, 5).…”

Section: Characteristics Of Msw Landfill Leachatementioning

confidence: 99%

Employing TiO 2 photocatalysis to deal with landfill leachate: Current status and development

Hassan

Zhao

Xie

2016

Chemical Engineering Journal

166

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“…A dye concentration of 10 mg L −1 was used in all experiments with a catalyst loading of 1 g L −1 . The effect of the latter on the photodegradation of dye solutions has been widely reported, where the degradation rate was found to increase with increasing catalyst load, up to a certain level after which it begins to decline due to the increase in suspension opacity and UV light scattering . This agreed with the preliminary results of the present investigation where the dye color removal increased with increasing ZnO loading up to a concentration of ∼1 g L −1 , after which it declined (Fig.…”

Section: Methodsmentioning

confidence: 99%

Performance Characteristics of a Suspended‐Catalyst Oscillatory Membrane Photocatalytic Reactor

Gomaa

Sabouni

2019

Chem Eng & Technol

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The performance characteristics of an oscillatory membrane photocatalytic reactor were investigated using dye degradation over a suspended ZnO catalyst as a model reaction. Both flat‐surface membranes and ones with transverse turbulence promoters (TP) were used. Application of oscillatory motion can be effective in enhancing the performance of suspended‐catalyst membrane photocatalytic reactors. The eddy formation and vortex shedding when using membranes with TP gave rise to several synergistic effects by providing effective removal of catalyst deposits from the membrane surface, which enhanced the flux and increased the suspended‐catalyst fraction in solution, which consequently enhanced the reaction rate. The effective mixing in the reaction channel minimized particles sedimentation and agglomeration which further enhanced the catalyst suspension and increased its effective reaction area. The specific energy consumption favorably compared to a membrane cross‐flow filtration system.

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Photodegradation of Reactive Black 5 in a ZnO/UV slurry membrane reactor

Cited by 64 publications

References 22 publications

Photodegradation of Alizarin Black S Dye Using Zinc Oxide

Photodegradation of Alizarin Black S Dye Using Zinc Oxide

Employing TiO 2 photocatalysis to deal with landfill leachate: Current status and development

Performance Characteristics of a Suspended‐Catalyst Oscillatory Membrane Photocatalytic Reactor

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