Industrial problems and solution towards visible light photocatalysis

Devi, Maya; Praharaj, Swetapadma; Rout, Dibyaranjan

doi:10.1016/b978-0-12-823018-3.00018-x

Cited by 7 publications

(2 citation statements)

References 104 publications

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“…Te photocatalysis reaction can be categorized as homogeneous photocatalysis and heterogeneous photocatalysis [102].…”

Section: Principle Of the Photocatalytic Oxidation Processmentioning

confidence: 99%

Recent Advances in Efficient Photocatalytic Degradation Approaches for Azo Dyes

Chowdhury,

Anantharaju,

Keshavamurthy

et al. 2023

Journal of Chemistry

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In recent decades, the textile industry has contributed to continuous pollution in the environment. Synthetic dyes which are commonly found in waste water are azo, sulfur, anthraquinone, triphenylmethyl, indigoid, and phthalocyanine derivatives. These pollutants block the light penetration in water bodies and prevent photosynthesis activity, thereby affecting aquatic life. As an environmental crisis, several technologies have been explored to control pollution. Among all the techniques, the photocatalysis process is considered as a green, simple, and economical process. To improve the photocatalytic activity, researchers worldwide have investigated various photocatalysts such as metal oxides, metal ferrites, and heterostructured nanocomposites. The major goal of this review article is to propose a high-performing, cost-effective hybrid photocatalyst reported to date for prospective azo dye pollutant remediation. This review article also aimed to highlight the challenges and uncertainties associated with dye degradation in the photocatalytic process.

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“…Te photocatalysis reaction can be categorized as homogeneous photocatalysis and heterogeneous photocatalysis [102].…”

Section: Principle Of the Photocatalytic Oxidation Processmentioning

confidence: 99%

Recent Advances in Efficient Photocatalytic Degradation Approaches for Azo Dyes

Chowdhury,

Anantharaju,

Keshavamurthy

et al. 2023

Journal of Chemistry

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“…The application of photocatalysis for WD sanitation has not been studied yet. The high total solid content in matrices like WD can pose challenges for photocatalysis, due to factors such as reduced light penetration, hindered photocatalyst, contact with target pathogens, and potential catalyst fouling [36]. However, researchers have been investigating methods to overcome these challenges and optimize photocatalytic disinfection in such complex matrices [37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Disinfection of Digestate Effluents Using Photocatalytic Nanofiltration

Chioti¹,

Sarikaki²,

Tsioni³

et al. 2023

Fermentation

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The disinfection properties of photocatalysis on liquid digestate derived from biogas plants have been investigated for the first time. The study presents the physiological characteristics of liquid digestate retrieved from various biogas plants based in northern Greece, revealing the heterogeneity of this matrix. Preliminary photocatalysis experiments conducted on inoculated liquid digestate samples showed that disinfection was possible when a pre-treated digestate underwent a combination of centrifuge–flocculation–μfiltration after 5.5 h with 0.7 g/L suspended TiO2 under UVA illumination. To explore the feasibility of an industrial application based on this concept, a novel design photocatalytic nanofiltration reactor was implemented for disinfection experiments on pre-treated liquid digestate. The synergistic action of photocatalysis during nanofiltration alleviated the leakage phenomena, and both the retentate and permeate effluents had lower concentrations of pathogens by approximately 1–2 log10 cfu/mL. This work sets out the basis for the efficient operation and engineering application of collaborative technology, with photocatalysis as the final step for liquid digestate sanitation and reusable water recovery.

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