Operational parameters effects on photocatalytic reactors of wastewater pollutant: A review

Roushenas, Peiman; Ong, Zhi Chao; Ismail, Zubaidah; Majidnia, Zohre; BeeChin, Ang; Asadsangabifard, Mohammadjavad; Onn, Chiu Chuen; JunHui, Tam

doi:10.5004/dwt.2018.22723

Cited by 5 publications

(3 citation statements)

References 107 publications

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“…Instead, it is proportional to the substrate concentration by apparent first-order kinetics. Additionally, the molecular structure of the pollutants can be one of the factors affecting their degradation extent, which has been discussed by authors (Nezamzadeh-Ejhieh and Karimi-Shamsabadi 2014; Jafari and Nezamzadeh-Ejhieh 2017;Babaahamdi-Milani and Nezamzadeh-Ejhieh 2016;Roushenas et al 2018).…”

Section: Effect Of Pollutant Concentrationmentioning

confidence: 99%

Photocatalytic degradation of 2,4-dichlorophenol using nanomaterials silver halide catalysts

Moja,

Mapossa,

Chirwa

et al. 2024

Environ Sci Pollut Res

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In this study, the photocatalytic activity of nanomaterials Ag/AgX (X = Cl, Br, I) is reported. Highly efficient silver halide (Ag/AgX where X = Cl, Br, I) photocatalysts were synthesized through a hydrothermal method. The samples were characterized using a range of techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunauer–Emmett–Teller (BET) to check their structural, morphology, textural and optical properties. In addition, the photocatalytic activity of photocatalysts was evaluated through the degradation of 2,4-dichlorophenol (2,4-DCP) under UV and visible light irradiation. XRD analysis confirmed the presence of a single-phase structure (pure phase) in the synthesized photocatalysts. SEM micrographs showed agglomeration with a non-uniform distribution of particles, which is a characteristic of surfactant-free precipitation reactions in aqueous media. The Ag/AgBr photocatalyst exhibited the best degradation efficiency, resulting in 83.37% and 89.39% photodegradation after 5 h of UV and visible light irradiation, respectively. The effect of catalyst loading, initial solution pH, and 2,4-DCP concentration was investigated for the best-performing Ag/AgBr photocatalyst. The degradation kinetics were best described by the pseudo-first-order Langmuir–Hinshelwood model. The photocatalytic capacity of Ag/AgBr decreased by 50% after five reuse cycles. SEM images revealed heightened levels of photodegradation on the catalyst surface. The study proved the feasibility of using simple synthesis methods to produce visible light active photocatalysts capable of degrading refractory phenolic pollutants in aqueous systems.

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Section: Effect Of Pollutant Concentrationmentioning

confidence: 99%

Photocatalytic degradation of 2,4-dichlorophenol using nanomaterials silver halide catalysts

Moja,

Mapossa,

Chirwa

et al. 2024

Environ Sci Pollut Res

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“…The protonation and de-protonation occur at different pH values according to its two pK a values [36]. The isoelectric point (point of zero charge, pH pzc ), between those pK a values, is usually given to address the TiO 2 charge, which is between pH 4.5 and 7.0 depending on the type and composition of the photocatalyst [37,38].…”

Section: Reaction Mechanisms Principlesmentioning

confidence: 99%

“…The pH of the solution and the charge of the micropollutant also play an important role during the photocatalytic degradation. The point of zero charge (pzc) for TiO 2 is between pH 4.5 and 7.0, depending on the type and composition of the photocatalyst [37,38]. The titania surface groups, TiOH, can protonate or de-protonate according to:…”

Section: Membrane Retentionmentioning

confidence: 99%

Radical filtration : the functionality of photocatalytic membranes in water treatment

Deba

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The cover is an abstract illustration of the photocatalytic experiments carried out with methylene blue (MB). It should be observed turning the book 90 ± with the front cover on top. The front cover shows the color (concentration) gradient of MB when discolored by the radicals (sparkles) generated by the photocatalytic membrane (the spine), and the back cover shows the permeate. This cover also depicts how it is to work with a dye. Most of the surfaces where I worked will remain blue forever.

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Enhancement of carbamazepine photodegradation using hybrid of phosphorescent carbon dots coupled with highly porous TiO₂ photocatalyst

Kujawa,

Grzegórska,

Zielińska-Jurek

et al. 2025

Dalton Trans.

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Operational parameters effects on photocatalytic reactors of wastewater pollutant: A review

Cited by 5 publications

References 107 publications

Photocatalytic degradation of 2,4-dichlorophenol using nanomaterials silver halide catalysts

Photocatalytic degradation of 2,4-dichlorophenol using nanomaterials silver halide catalysts

Radical filtration : the functionality of photocatalytic membranes in water treatment

Enhancement of carbamazepine photodegradation using hybrid of phosphorescent carbon dots coupled with highly porous TiO₂ photocatalyst

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Operational parameters effects on photocatalytic reactors of wastewater pollutant: A review

Cited by 5 publications

References 107 publications

Photocatalytic degradation of 2,4-dichlorophenol using nanomaterials silver halide catalysts

Photocatalytic degradation of 2,4-dichlorophenol using nanomaterials silver halide catalysts

Radical filtration : the functionality of photocatalytic membranes in water treatment

Enhancement of carbamazepine photodegradation using hybrid of phosphorescent carbon dots coupled with highly porous TiO2 photocatalyst

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Product

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Enhancement of carbamazepine photodegradation using hybrid of phosphorescent carbon dots coupled with highly porous TiO₂ photocatalyst