Low concentration peroxymonosulfate and UVA-LED combination for E. coli inactivation and wastewater disinfection from recirculating aquaculture systems

Qi, Wanhe; Zhu, Songming; Shitu, Abubakar; Ye, Zhangying; Liu, Dezhao

doi:10.1016/j.jwpe.2020.101362

Cited by 35 publications

(13 citation statements)

References 57 publications

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“…It has been asserted that sunlight demonstrates a redox ability, which appears to suggest excellent sustainability. 41 Note that being a part of sunlight, UV irradiation (100–400 nm) 42 could activate PMS to degrade pollutants. 9 Therefore, it could be speculated that sunlight photo-illumination would be an environmentally friendly and efficient way to enhance ACE removal.…”

Section: Resultsmentioning

confidence: 99%

Selective degradation of acetaminophen from hydrolyzed urine by peroxymonosulfate alone: performances and mechanisms

Lin

Zhang

et al. 2021

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Selective degradation of acetaminophen from hydrolyzed urine by peroxymonosulfate alone: performances and mechanisms

Lin

Zhang

et al. 2021

RSC Adv.

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“…The widely studied target microorganism is E. coli, regarded as an indicator of fecal pollution in aquatic environments . Furthermore, it is easy to obtain and cultivate, and its structure and composition are representative (Qi et al, 2020). In addition, the inactivation of viruses, fungi and other bacteria such as S. aureus, E. faecalis and B. mycoides has also been studied.…”

Section: Inactivation Kineticsmentioning

confidence: 99%

Bacteria inactivation by sulfate radical: progress and non-negligible disinfection by-products

Zhou

Ren

et al. 2022

Front. Environ. Sci. Eng.

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Sulfate radicals have been increasingly used for the pathogen inactivation due to their strong redox ability and high selectivity for electron-rich species in the last decade. The application of sulfate radicals in water disinfection has become a very promising technology. However, there is currently a lack of reviews of sulfate radicals inactivated pathogenic microorganisms. At the same time, less attention has been paid to disinfection by-products produced by the use of sulfate radicals to inactivate microorganisms. This paper begins with a brief overview of sulfate radicals’ properties. Then, the progress in water disinfection by sulfate radicals is summarized. The mechanism and inactivation kinetics of inactivating microorganisms are briefly described. After that, the disinfection by-products produced by reactions of sulfate radicals with chlorine, bromine, iodide ions and organic halogens in water are also discussed. In response to these possible challenges, this article concludes with some specific solutions and future research directions.

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“…However, the combination of persulfate with UV-A radiation only is less common, an iron-based catalyst being usually added to the treatment. Studies using persulfate/UV-A in wastewater treatment have been focused on the inactivation of microorganisms (Qi et al, 2020;Venieri et al, 2020), or the removal of a single micropollutant, and persulfate (PS) is generally used instead of PMS (Table 1). Therefore, most studies typically deal with the degradation of individual compounds rather than mixtures and/or using ultrapure water as matrix, which is a scenario quite different from that observed in real wastewaters, with complex composition that usually is not taken into account.…”

Section: Hso 5 ⁻ →Somentioning

confidence: 99%

UV-A activation of peroxymonosulfate for the removal of micropollutants from secondary treated wastewater

Guerra-Rodríguez

Ribeiro

et al. 2021

Science of The Total Environment

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The occurrence of micropollutants (MPs) in the aquatic environment poses a threat for the environment and the human health. The application of advanced oxidation processes based in sulphate radicals (SR-AOPs) to eliminate these contaminants has attracted attention in recent years. In this work, the simultaneous degradation of 20 multi-class MPs (classified into 5 main categories, namely antibiotics, beta-blockers, other pharmaceuticals, pesticides, and herbicides) was evaluated for the first time in secondary treated wastewater, by activating peroxymonosulfate (PMS) by UV-A radiation, without any pH adjustment or iron addition. The optimal PMS concentration to remove the spiked target MPs (100 μg L -1 ) from wastewater was 0.1 mM, leading to an average degradation of 80% after 60 min, with most of the elimination occurring during the first 5 min. Synergies between radiation and the oxidant were demonstrated and quantified, with an average extent of synergy of 69.1%. The optimized treatment was then tested using non-spiked wastewater, in which 12 out of the 20 target contaminants were detected. Among these, 7 were degraded at some extent, varying from 10.7% (acetamiprid) to 94.4% (ofloxacin), the lower removals being attributed to the quite inferior ratio of MPs to natural organic matter. Phytotoxicity tests carried out with the wastewater before and after photo-activated PMS oxidation revealed a decrease in the toxicity and that the plants were able to grow in the presence of the treated water.Therefore, despite the low degradation rates obtained for some MPs, the treatment effectively reduces the toxicity of the matrix, making the water safer for reuse.

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Low concentration peroxymonosulfate and UVA-LED combination for E. coli inactivation and wastewater disinfection from recirculating aquaculture systems

Cited by 35 publications

References 57 publications

Selective degradation of acetaminophen from hydrolyzed urine by peroxymonosulfate alone: performances and mechanisms

Selective degradation of acetaminophen from hydrolyzed urine by peroxymonosulfate alone: performances and mechanisms

Bacteria inactivation by sulfate radical: progress and non-negligible disinfection by-products

UV-A activation of peroxymonosulfate for the removal of micropollutants from secondary treated wastewater

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