Principal parameters affecting virus inactivation by the solar photo-Fenton process at neutral pH and μM concentrations of H2O2 and Fe2+/3+

Ortega-Gómez, E.; Martín, M.M. Ballesteros; Carratalà, Anna; Ibáñez, Pilar Fernández; Pérez, J.A. Sánchez; Pulgarín, C.

doi:10.1016/j.apcatb.2015.03.016

Cited by 49 publications

(21 citation statements)

References 56 publications

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“…Iron can produce hydroxyl radicals by the decomposition of hydrogen peroxide (formed during the irradiation of OM) and thereby contribute to virus inactivation (36). Hence, in STW and IGW, iron could be a good source of hydroxyl radicals.…”

Section: Fig 3 Inactivation Kinetics Of Bacteriophages Ms2 (A) and X1mentioning

confidence: 99%

Solar Disinfection of Viruses in Polyethylene Terephthalate Bottles

Carratalà

Calado

Mattle

et al. 2016

Appl Environ Microbiol

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b Solar disinfection (SODIS) of drinking water in polyethylene terephthalate (PET) bottles is a simple, efficient point-of-use technique for the inactivation of many bacterial pathogens. In contrast, the efficiency of SODIS against viruses is not well known. In this work, we studied the inactivation of bacteriophages (MS2 and X174) and human viruses (echovirus 11 and adenovirus type 2) by SODIS. We conducted experiments in PET bottles exposed to (simulated) sunlight at different temperatures (15, 22, 26, and 40°C) and in water sources of diverse compositions and origins (India and Switzerland). Good inactivation of MS2 (>6-log inactivation after exposure to a total fluence of 1.34 kJ/cm 2 ) was achieved in Swiss tap water at 22°C, while less-efficient inactivation was observed in Indian waters and for echovirus (1.5-log inactivation at the same fluence). The DNA viruses studied, X174 and adenovirus, were resistant to SODIS, and the inactivation observed was equivalent to that occurring in the dark. High temperatures enhanced MS2 inactivation substantially; at 40°C, 3-log inactivation was achieved in Swiss tap water after exposure to a fluence of only 0.18 kJ/cm 2 . Overall, our findings demonstrate that SODIS may reduce the load of single-stranded RNA (ssRNA) viruses, such as echoviruses, particularly at high temperatures and in photoreactive matrices. In contrast, complementary measures may be needed to ensure efficient inactivation during SODIS of DNA viruses resistant to oxidation.

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Section: Fig 3 Inactivation Kinetics Of Bacteriophages Ms2 (A) and X1mentioning

confidence: 99%

Solar Disinfection of Viruses in Polyethylene Terephthalate Bottles

Carratalà

Calado

Mattle

et al. 2016

Appl Environ Microbiol

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“…Photo-Fenton systems involving solar light have been tested to oxidize azo-dyes [202][203][204][205], pharmaceuticals [206][207][208] and herbicides [209,210]. Also, biological contaminants, including viruses [211] and bacteria [212][213][214], can be eradicated using photo-Fenton systems.…”

Section: Photo-fentonmentioning

confidence: 99%

Mechanistic studies on versatile metal-assisted hydrogen peroxide activation processes for biomedical and environmental incentives

Oszajca

Brindell

Orzeł

et al. 2016

Coordination Chemistry Reviews

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“…In recent years, great endeavors have been made to develop efficient chelating agents for stabilizing iron and enhancing the photo-Fenton degradation of refractory organic contaminants in water under neutral pH conditions [1][2][3][4]. To date, a large number of Fe complexes such as Fe-ethylenediaminetetraacetic acid, Fe-oxalate, Fe-ethylenediamine-N, N -disuccinic acid, and iron phthalocyanine complex (FePc) have been reported as photo-Fenton catalysts [5][6][7][8], in which FePc has been found to have good response to visible light [7,[9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of FePcS–PMA–LDH Cointercalation Composite with Enhanced Visible Light Photo-Fenton Catalytic Activity for BPA Degradation at Circumneutral pH

Huang

Tian

et al. 2020

Materials

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1) Background: Iron tetrasulfophthalocyanine with a large nonlinear optical coefficient, good stability, and high catalytic activity has aroused the attention of researchers in the field of photo-Fenton reaction. Further improvement of the visible light photo-Fenton catalytic activity under circumneutral pH conditions for their practical application is still of great importance. (2) Methods: In this paper, iron tetrasulfophthalocyanine (FePcS) and phosphomolybdic acid (PMA) cointercalated layered double hydroxides (LDH) were synthesized by the ion-exchange method. All samples were fully characterized by various techniques and the results showed that FePcS and PMA were successfully intercalated in layered double hydroxides and the resulted compound exhibited strong absorption in the visible light region. The cointercalation compound was tested as a heterogeneous catalyst for the visible light photo-Fenton degradation of bisphenol A (BPA) at circumneutral pH.(3) Results: The results showed that the degradation and total organic carbon removal efficiencies of bisphenol A were 100% and 69.2%, respectively. (4) Conclusions: The cyclic voltammetry and electrochemical impedance spectroscopy measurements demonstrated that the main contribution of PMA to the enhanced photo-Fenton activity of FePcS-PMA-LDH comes from the acceleration of electron transfer in the reaction system. Additionally, the possible reaction mechanism in the photo-Fenton system catalyzed by FePcS-PMA-LDH was also proposed.

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Principal parameters affecting virus inactivation by the solar photo-Fenton process at neutral pH and μM concentrations of H2O2 and Fe2+/3+

Cited by 49 publications

References 56 publications

Solar Disinfection of Viruses in Polyethylene Terephthalate Bottles

Solar Disinfection of Viruses in Polyethylene Terephthalate Bottles

Mechanistic studies on versatile metal-assisted hydrogen peroxide activation processes for biomedical and environmental incentives

Synthesis of FePcS–PMA–LDH Cointercalation Composite with Enhanced Visible Light Photo-Fenton Catalytic Activity for BPA Degradation at Circumneutral pH

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