Design improvement and performance evaluation of solar photocatalytic reactor for industrial effluent treatment

Nair, Ranjith G.; Bharadwaj, Pranami; Samdarshi, S.K.

doi:10.1016/j.ecoenv.2015.07.036

Cited by 12 publications

(5 citation statements)

References 27 publications

(33 reference statements)

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“…In some literature the product of k r and k a was considered as the apparent rate constant and the unit is in time −1 . For example, the apparent rate constant for the MB degradation in a solar photocatalytic reactor with TiO 2 suspended in water was reported as 0.035/h, while in this paper it is 4.55/h. The apparent rate constant for a spinning disc reactor with immobilized TiO 2 was reported as 0.0003/s, while in this paper it was 0.0013/s.…”

Section: Resultsmentioning

confidence: 56%

“…Reported AOP reactors are all different in design and size, and, therefore, it is difficult to make exact comparisons. Each reactor design has its own advantages and disadvantages; for example, some are easy to build and others are designed to use natural sunlight . Table shows the photonic efficiency data of the MB degradation obtained with different photocatalytic reactors found in the literature.…”

Section: Resultsmentioning

confidence: 99%

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A corrugated plate photocatalytic reactor for degradation of waterborne organic contaminants

et al. 2019

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A UV‐C/titanium dioxide (TiO2) plate coated photocatalytic reactor using a corrugated frame system was designed for water borne organic contaminant degradation. The anticipated advantages of using the corrugated layout include a larger photocatalytic surface area per unit volume and improved photocatalytic activity. The water distribution system was designed to assist effective interactions among the water pollutant, photocatalyst, and photons. The degradation of a methylene blue solution, as a model water contaminant, was carried out at room temperature (22 °C) at different concentrations and flowrates. With an 11 mg/L methylene blue solution, 70 % was degraded within the first 10 min using TiO2 coated corrugated plates, whereas under the same conditions the degradation rate was only 12 % for a corrugated reactor without a catalyst coating, and 4 % for a no‐plate reactor. The methylene blue degradation was described by the Langmuir‐Hinshelwood model, and the apparent photonic efficiency of the corrugated arrangement was found to be in the range of 1.53–2.83 % when half the initial concentration was degraded. The local area specific rate of energy absorption (LASREA) profile over the plates was determined from a model developed based on UV‐C light irradiation distribution and plate configuration. Light intensity measurements were carried out and were found to correlate with this model. A set of corrugated plate photocatalytic reactors with different geometries, but with the same coated area, were then analyzed and absorbed UV light intensities were integrated to determine the best geometry.

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Section: Resultsmentioning

confidence: 56%

Section: Resultsmentioning

confidence: 99%

A corrugated plate photocatalytic reactor for degradation of waterborne organic contaminants

et al. 2019

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“…In order to compare the performance of PWTRs, solid criteria are necessary. Evaluating a PWTR should focus primarily on efficiency, throughput, energy consumption, and equipment cost [174]. Currently, the commonly used criteria include reaction rate constant, specific removal rate, photon absorption efficiency, overall photonic efficiency, space time yield, and photocatalytic spatial and typical yields, as shown in Table 3.…”

Section: Evaluation Methods For Pwtrsmentioning

confidence: 99%

Research on Photocatalytic Wastewater Treatment Reactors: Design, Optimization, and Evaluation Criteria

et al. 2023

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Photocatalytic wastewater treatment technology has been proposed for more than 30 years, but it is still seldom used in industry. The lack of research on high-performance and cost-effective photocatalytic wastewater treatment reactors (PWTRs) may be one of the major reasons limiting the industrial application of photocatalytic technology. To accelerate the realization of industrial application, this review emphasizes the importance of increased research on PWTRs. In this review, we analyze the role of photocatalytic technology in wastewater treatment, followed by a comprehensive discussion of PWTR design from multiple perspectives, including photocatalyst selection, loading and recovery method of photocatalysts within the reactor, light source design, and reaction conditions control. Additionally, we consider the cost of reactor design. Finally, we summarize the optimization strategy of PWTRs and the criteria for evaluating photocatalytic performance. The main innovation of this review lies in a comprehensive analysis of PWTR design, with a focus on cost-effective and high-performance solutions to promote the industrial use of photocatalytic technology.

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“…A promising method that provides energy that is friendly to the environment is photocatalysis. [13,14].…”

Section: Introductionmentioning

confidence: 99%

Morphology and defects in CeO2-ZnO

Usharani¹,

Kumar²,

Bhattacharyya

et al. 2023

Preprint

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Cerium (IV) Oxide (CeO2) was synthesized by a wet chemical route and showed the formation of nanoparticles which were subject to a heterogenous agglomeration and generation of oxygen vacancies. These defects generated in ceria and in Ce-doped ZnO were found to have technological and environmental benefits in terms of photocatalysis and room-temperature magnetism. UV radiation was found to be a dominant factor in the performance of CeO2 and related materials, although hints of the workability of Ceria and its derivative in visible light were found. The morphological and structural changes occurring in the CeO2 during its growth were studied and correlated with the electronic and optical properties

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Design improvement and performance evaluation of solar photocatalytic reactor for industrial effluent treatment

Cited by 12 publications

References 27 publications

A corrugated plate photocatalytic reactor for degradation of waterborne organic contaminants

A corrugated plate photocatalytic reactor for degradation of waterborne organic contaminants

Research on Photocatalytic Wastewater Treatment Reactors: Design, Optimization, and Evaluation Criteria

Morphology and defects in CeO2-ZnO

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