Hepatitis A Virus Disinfection in Water by Solar Photo–Fenton Systems

David Polo, Irene García-Fernández, P Fernandez Ibanez, Jesús L. Romalde

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This study evaluates and compares the effectiveness of solar photo–Fenton systems for the inactivation of hepatitis A virus (HAV) in water. The effect of solar irradiance, dark- Fenton reaction and three different reactant concentrations (2.5/5, 5/10 and 10/20 mg/L of Fe2+/H2O2) on the photo–Fenton process were tested in glass bottle reactors (200 mL) during 6 h undernatural sunlight. Disinfection kinetics were determined both by RT-qPCR and infectivity assays. Mean water temperatures ranged from 25 to 27.3 °C, with a maximum local noon UV irradiances of 22.36 W/m2. Photo–Fenton systems yielded increased viral reduction rates in comparison with the isolated effect under the Fenton reaction in darkness (negligible viral reduction) or the solar radiation (0.25 Log of RNA reduction). With the highest concentration employed (10–20 mg/LFe2+– H2O2), an average RNA reduction rate of ~ 1.8 Log (initial concentration of 105 pfu/mL) and a reduction of 80% in the infectivity capacity were reached. Results showed a strong synergistic effect between Fe2+/H2O2 and sunlight, demonstrating that significant disinfection rates of HAV under photo–Fenton systems may occur with relatively higher efficiency at middleenvironmental temperatures and without the need for an energy-intensive light source.
LanguageEnglish
Pages1-8
JournalFood and Environmental Virology
Volume2018
Early online date21 Feb 2018
DOIs
Publication statusE-pub ahead of print - 21 Feb 2018

Fingerprint

hepatitis
disinfection
virus
infectivity
irradiance
RNA
water
solar radiation
water temperature
glass
assay
kinetics
energy
effect
rate
temperature

Keywords

  • Hepatitis A · Virus inactivation · Water disinfection · Photo–Fenton

Cite this

Polo, David ; García-Fernández, Irene ; Fernandez Ibanez, P ; Romalde, Jesús L. / Hepatitis A Virus Disinfection in Water by Solar Photo–Fenton Systems. In: Food and Environmental Virology. 2018 ; Vol. 2018. pp. 1-8.
@article{7756604d64444ff8b95932b2244ce8e6,
title = "Hepatitis A Virus Disinfection in Water by Solar Photo–Fenton Systems",
abstract = "This study evaluates and compares the effectiveness of solar photo–Fenton systems for the inactivation of hepatitis A virus (HAV) in water. The effect of solar irradiance, dark- Fenton reaction and three different reactant concentrations (2.5/5, 5/10 and 10/20 mg/L of Fe2+/H2O2) on the photo–Fenton process were tested in glass bottle reactors (200 mL) during 6 h undernatural sunlight. Disinfection kinetics were determined both by RT-qPCR and infectivity assays. Mean water temperatures ranged from 25 to 27.3 °C, with a maximum local noon UV irradiances of 22.36 W/m2. Photo–Fenton systems yielded increased viral reduction rates in comparison with the isolated effect under the Fenton reaction in darkness (negligible viral reduction) or the solar radiation (0.25 Log of RNA reduction). With the highest concentration employed (10–20 mg/LFe2+– H2O2), an average RNA reduction rate of ~ 1.8 Log (initial concentration of 105 pfu/mL) and a reduction of 80{\%} in the infectivity capacity were reached. Results showed a strong synergistic effect between Fe2+/H2O2 and sunlight, demonstrating that significant disinfection rates of HAV under photo–Fenton systems may occur with relatively higher efficiency at middleenvironmental temperatures and without the need for an energy-intensive light source.",
keywords = "Hepatitis A · Virus inactivation · Water disinfection · Photo–Fenton",
author = "David Polo and Irene Garc{\'i}a-Fern{\'a}ndez and {Fernandez Ibanez}, P and Romalde, {Jes{\'u}s L.}",
year = "2018",
month = "2",
day = "21",
doi = "10.1007/s12560-018-9339-3",
language = "English",
volume = "2018",
pages = "1--8",
journal = "Food and Environmental Virology",
issn = "1867-0334",

}

Hepatitis A Virus Disinfection in Water by Solar Photo–Fenton Systems. / Polo, David; García-Fernández, Irene; Fernandez Ibanez, P; Romalde, Jesús L.

In: Food and Environmental Virology, Vol. 2018, 21.02.2018, p. 1-8.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Hepatitis A Virus Disinfection in Water by Solar Photo–Fenton Systems

AU - Polo, David

AU - García-Fernández, Irene

AU - Fernandez Ibanez, P

AU - Romalde, Jesús L.

PY - 2018/2/21

Y1 - 2018/2/21

N2 - This study evaluates and compares the effectiveness of solar photo–Fenton systems for the inactivation of hepatitis A virus (HAV) in water. The effect of solar irradiance, dark- Fenton reaction and three different reactant concentrations (2.5/5, 5/10 and 10/20 mg/L of Fe2+/H2O2) on the photo–Fenton process were tested in glass bottle reactors (200 mL) during 6 h undernatural sunlight. Disinfection kinetics were determined both by RT-qPCR and infectivity assays. Mean water temperatures ranged from 25 to 27.3 °C, with a maximum local noon UV irradiances of 22.36 W/m2. Photo–Fenton systems yielded increased viral reduction rates in comparison with the isolated effect under the Fenton reaction in darkness (negligible viral reduction) or the solar radiation (0.25 Log of RNA reduction). With the highest concentration employed (10–20 mg/LFe2+– H2O2), an average RNA reduction rate of ~ 1.8 Log (initial concentration of 105 pfu/mL) and a reduction of 80% in the infectivity capacity were reached. Results showed a strong synergistic effect between Fe2+/H2O2 and sunlight, demonstrating that significant disinfection rates of HAV under photo–Fenton systems may occur with relatively higher efficiency at middleenvironmental temperatures and without the need for an energy-intensive light source.

AB - This study evaluates and compares the effectiveness of solar photo–Fenton systems for the inactivation of hepatitis A virus (HAV) in water. The effect of solar irradiance, dark- Fenton reaction and three different reactant concentrations (2.5/5, 5/10 and 10/20 mg/L of Fe2+/H2O2) on the photo–Fenton process were tested in glass bottle reactors (200 mL) during 6 h undernatural sunlight. Disinfection kinetics were determined both by RT-qPCR and infectivity assays. Mean water temperatures ranged from 25 to 27.3 °C, with a maximum local noon UV irradiances of 22.36 W/m2. Photo–Fenton systems yielded increased viral reduction rates in comparison with the isolated effect under the Fenton reaction in darkness (negligible viral reduction) or the solar radiation (0.25 Log of RNA reduction). With the highest concentration employed (10–20 mg/LFe2+– H2O2), an average RNA reduction rate of ~ 1.8 Log (initial concentration of 105 pfu/mL) and a reduction of 80% in the infectivity capacity were reached. Results showed a strong synergistic effect between Fe2+/H2O2 and sunlight, demonstrating that significant disinfection rates of HAV under photo–Fenton systems may occur with relatively higher efficiency at middleenvironmental temperatures and without the need for an energy-intensive light source.

KW - Hepatitis A · Virus inactivation · Water disinfection · Photo–Fenton

U2 - 10.1007/s12560-018-9339-3

DO - 10.1007/s12560-018-9339-3

M3 - Article

VL - 2018

SP - 1

EP - 8

JO - Food and Environmental Virology

T2 - Food and Environmental Virology

JF - Food and Environmental Virology

SN - 1867-0334

ER -