Photocatalytic water disinfection under solar irradiation by Ag@TiO2 core-shell structured nanoparticles

D, Baby Sreeja S; Kodialbail, Vidya Shetty

doi:10.1016/j.solener.2017.07.057

Cited by 58 publications

(15 citation statements)

References 47 publications

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“…For example, nano-based photocatalyst, can use the large fraction of the solar spectrum to generate powerful ROS [ 114 , 115 ]. Sreeja and Shetty K [ 116 ], in their tests with a laboratory E. coli cell culture, obtained a complete disinfection of 40 × 10 8 CFU mL −1 E. coli cells in 15 min exploiting solar PC with 0.4 g/L Ag core-TiO 2 shell structured (Ag@TiO 2 ) nanoparticles. In recent years, PC processes using solar light attracted high interest [ 106 , 117 ] resulting highly cost-effective and sustainable [ 114 ] in particular for large-scale applications [ 103 ].…”

Section: Combination With Other Technologiesmentioning

confidence: 99%

Disinfection of Wastewater by UV-Based Treatment for Reuse in a Circular Economy Perspective. Where Are We at?

Collivignarelli

Abbà

Miino

et al. 2020

IJERPH

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Among the critical issues that prevent the reuse of wastewater treatment plants (WWTPs) effluents in a circular economy perspective, the microbiological component plays a key role causing infections and diseases. To date, the use of conventional chemical oxidants (e.g., chlorine) represent the main applied process for wastewater (WW) disinfection following a series of operational advantages. However, toxicity linked to the production of highly dangerous disinfection by-products (DBPs) has been widely demonstrated. Therefore, in recent years, there is an increasing attention to implement sustainable processes, which can simultaneously guarantee the microbiological quality of the WWs treated and the protection of both humans and the environment. This review focuses on treatments based on ultraviolet radiation (UV) alone or in combination with other processes (sonophotolysis, photocatalysis and photoelectrocatalysis with both natural and artificial light) without the dosage of chemical oxidants. The strengths of these technologies and the most significant critical issues are reported. To date, the use of synthetic waters in laboratory tests despite real waters, the capital and operative costs and the limited, or absent, experience of full-scale plant management (especially for UV-based combined processes) represent the main limits to their application on a larger scale. Although further in-depth studies are required to ensure full applicability of UV-based combined processes in WWTPs for reuse of their purified effluents, excellent prospects are presented thanks to an absent environmental impact in terms of DBPs formation and excellent disinfection yields of microorganisms (in most cases higher than 3-log reduction).

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Section: Combination With Other Technologiesmentioning

confidence: 99%

Disinfection of Wastewater by UV-Based Treatment for Reuse in a Circular Economy Perspective. Where Are We at?

Collivignarelli

Abbà

Miino

et al. 2020

IJERPH

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“…Applications of NPs for solar chemical technologies are investigated the last time [139][140][141][142][143][144][145]. Many exciting possibilities exist to exploit the extremely large surface area-to-volume ratio of NPs to effect chemical reactions.…”

Section: Applications Of Nanoparticles and Nanofluids In Solar Thermamentioning

confidence: 99%

“…The review of experimental investigation on directly irradiated particles solar reactors has been presented [139]. Great interest is connected with the problems of photocatalysis with solar energy, including sunlight-responsive photocatalyst based on TiO 2 for wastewater treatment [144] and photocatalytic water disinfection under solar irradiation by Ag@TiO 2 core-shell structured NPs [145].…”

Section: Applications Of Nanoparticles and Nanofluids In Solar Thermamentioning

confidence: 99%

Modeling and analysis of optical properties of nanoparticles and nanofluids for effective absorption of solar radiation and their heating

Pustovalov

2019

SN Appl. Sci.

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This review presents a comprehensive analysis of the recent studies and advances related to optical properties of nanoparticles, their heating under solar irradiation and heat conversion, relevant equations and theoretical modeling approaches and application of nanofluids for direct absorption of solar radiation. A lot of papers including theoretical, numerical and experimental up-to-date works are reviewed and summarized carefully to give a panoramic overview of the role of the nanoparticles. Modern nanotechnology can produce various homogeneous and hybrid (core-shell) nanoparticles from different metals and materials which have unique optical and thermal properties. It was found that the application of nanoparticles selected on the basis of the presented analysis has shown remarkable properties and offers unique advantages over conventional fluids in optical absorption, thermo-physical and heating properties of nanofluids. This fact can play a crucial role in increasing the efficiency of solar energy harvesting.

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“…Photocatalytic activity of Ag/BiO4 for water disinfection under sunlight was assessed by Booshehri et al (2017). Ag core-TiO2 shell structured (Ag@TiO2) nanoparticles were found to be efficient in the disinfection of water under solar light irradiation both in free and immobilized form (Sreeja and Vidya Shetty, 2017).…”

Section: Heavy Metals and Transition Metalsmentioning

confidence: 99%

Disinfection Processes

Kuo

2018

Water Environment Research

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Photocatalytic water disinfection under solar irradiation by Ag@TiO2 core-shell structured nanoparticles

Cited by 58 publications

References 47 publications

Disinfection of Wastewater by UV-Based Treatment for Reuse in a Circular Economy Perspective. Where Are We at?

Disinfection of Wastewater by UV-Based Treatment for Reuse in a Circular Economy Perspective. Where Are We at?

Modeling and analysis of optical properties of nanoparticles and nanofluids for effective absorption of solar radiation and their heating

Disinfection Processes

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