Fixed bed recirculation type photocatalytic reactor with TiO2 immobilized clay beads for the degradation of pesticide polluted water

Sraw, Abhishek; Kaur, Taranjeet; Pandey, Yamini; Sobti, Amit; Wanchoo, R. K.; Toor, Amrit Pal

doi:10.1016/j.jece.2018.10.062

Cited by 62 publications

(18 citation statements)

References 65 publications

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“…[58][59][60][61][62] Among these strategies, immobilization technique using waste materials (ash and foundry sand) or natural materials (clay minerals and pumice) have been received extensive interest in recent years. [63][64][65][66][67] The benets of this technique are that it can: (i) easily recover and reuse catalysts from the treated effluent stream, (ii) support continuous operation for multiple cycles of photoreactors, and (iii) enhance the photodegradation efficiency of organic compounds from the aqueous solution. 13,68 More importantly, the use of natural or waste materials for xing metal oxides have received increasing attention.…”

Section: Semiconductor Metal Oxides: Current Challengesmentioning

confidence: 99%

Fly ash-, foundry sand-, clay-, and pumice-based metal oxide nanocomposites as green photocatalysts

2021

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Section: Semiconductor Metal Oxides: Current Challengesmentioning

confidence: 99%

Fly ash-, foundry sand-, clay-, and pumice-based metal oxide nanocomposites as green photocatalysts

2021

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“…The organic pollutants in the packed-bed reactor can be degraded completely within 20 s, which has a good development prospect in the rapid treatment of pollution incidents. To prevent catalysts loss, the current research group has deposited TiO 2 on supporting materials such as clay, calcium alginate beads, and glass raschig rings [139][140][141]. They developed the fixed-bed photoreactor packed with these above packing materials for the organic wastewater treatment.…”

Section: Packed-bed Reactormentioning

confidence: 99%

“…Considering the advantages of the immobilization systems, the fixed bed photoreactor is promising for organic wastewater purification. prevent catalysts loss, the current research group has deposited TiO2 on supporting materials such as clay, calcium alginate beads, and glass raschig rings [139][140][141]. They developed the fixed-bed photoreactor packed with these above packing materials for the organic wastewater treatment.…”

Section: Packed-bed Reactormentioning

confidence: 99%

Photocatalytic Reactor as a Bridge to Link the Commercialization of Photocatalyst in Water and Air Purification

et al. 2022

Catalysts

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The development of clean and sustainable teleology is vital to treat the critical environmental pollutants. In the last decade, the use of photocatalytic reactors has been widely reported for organic pollutants degradation. From photocatalysis’s application in environmental remediation, the primary technical issue to scientists is always the efficiency. The enhanced photocatalytic efficiency is mainly depended on the materials improvement. However, the design of photoreactors lags behind the development of photocatalysts, which strongly limit the widespread use of photocatalysis technology in environmental remediation. The nanoparticles separation, mass transfer limitation, and photonic efficiency have always been problematic and restrict the high photocatalytic efficiency of photoreactors. To overcome these bottleneck problems, the most popular or newfangled designs of photoreactors employed in air and water treatment has been reviewed. The purpose of this review is to systematize designs and synthesis of innovative TiO2-based photoreactors and provides detailed survey and discussion on the enhanced mechanism of photocatalytic performance in different TiO2-based photoreactors. The most studied photoreactors are the following: packed bed reactor, film reactor and membrane reactor, which have some limitations and advantages. A comprehensive comparison between the different photocatalytic performance of TiO2-based photoreactors is presented. This work aims to summarize the progress of TiO2-based photoreactors and provides useful information for the further research and development of photocatalysis for water and air purification.

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“…For low initial substrate concentration, (K<<<1, and hence neglected) Eq. (1) reduces to apparent 1st order kinetics, expressed as [43]:…”

Section: Kinetic Studymentioning

confidence: 99%

Sequential microbial-photocatalytic degradation of imidacloprid

Sharma

Kaur

Sobti

et al. 2019

Environmental Engineering Research

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In the present study, the application of sequential biological and photocatalytic process was evaluated as a feasible process for the degradation of imidacloprid (IMI) in soil. Photocatalysis was carried out as a post and pre-treatment to the biological process as Microbial Photocatalytic (MP) and Photocatalytic Microbial (PM), respectively, to enhance the degradation and mineralization of IMI in soil. By both the processes, there was an enhancement in the percentage degradation of IMI i.e 86.2% for PM and 94.6% for MP process. The obtained results indicate that MP process is apparently more efficient in degradation of IMI which was observed with 15 days of biological treatment followed by 18 h of photocatalytic degradation (15 d + 18 h). The present work also reveals that though the difference in terms of the degradation of IMI after 5 d + 18 h, 10 d + 18 h & 15 d+ 18 h of MP process is not drastic, yet significant variation has been observed in terms of mineralization that truly signifies the removal of IMI from the soil. The LC analysis has shown that the intermediates formed during MP process are more and smaller in comparison to PM process, which further provides evidence that MP process is better than PM process for effective degradation of IMI in soil.

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Fixed bed recirculation type photocatalytic reactor with TiO2 immobilized clay beads for the degradation of pesticide polluted water

Cited by 62 publications

References 65 publications

Fly ash-, foundry sand-, clay-, and pumice-based metal oxide nanocomposites as green photocatalysts

Fly ash-, foundry sand-, clay-, and pumice-based metal oxide nanocomposites as green photocatalysts

Photocatalytic Reactor as a Bridge to Link the Commercialization of Photocatalyst in Water and Air Purification

Sequential microbial-photocatalytic degradation of imidacloprid

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