Resistance of Fusarium sp spores to solar TiO2 photocatalysis: influence of spore type and water (scaling-up results)

M I Polo-López, P Fernandez Ibanez, I García-Fernández, I Oller, I Salgado-Tránsito, C Sichel

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

BACKGROUND: Common irrigation water disinfection methods, which may be unable to inactivate all types of pathogens or even become phytotoxic themselves, are not very effective in controlling phytopathogens. Water disinfection by photocatalysis is a promising irrigation-water treatment for destroying phytopathogens without the drawbacks of conventional disinfection methods. Previous research has shown that solar photocatalytic technology can be used in the disinfection treatment of bacteria, protozoa and fungi, either through solar disinfection only. The purpose of this work was evaluate the TiO2 photocatalysis process to inactivate Fusarium spores in distilled and well water.RESULTS: This paper reports on the ability of solar photocatalysis to inactivate Fusarium spores in a solar bottle reactor and in a new 60 L compound parabolic collector (CPC) prototype reactor. Inactivation of Fusarium sp spores by titanium dioxide (Degussa P25) was evaluated in distilled and natural well water. The experiments were carried out using 5 or 6 h exposure to natural sunlight at the Plataforma Solar de Almeria (Southeast Spain). The highest Fusarium spore inactivation rate during experiments was achieved with a 30 L min−1 flow rate and 100 mg L−1 TiO2 concentration. Three different Fusarium spores (microconidia, macroconidia and chlamydospores) were individually evaluated to determine whether there were differences in resistance to the photocatalytic treatment. The results showed that chlamydospores were the most resistant, followed by macroconidia, and finally microconidia were the most sensitive.CONCLUSIONS: Microconidia, macroconidia and chlamydospores in distilled and well water were inactivated with TiO2 slurry in a 60 L CPC photoreactor, demonstrating for the first time that it is possible to scale-up photocatalytic treatment for use and reuse of water for irrigation.
LanguageEnglish
Pages1038-1048
JournalJournal of Chemical Technology & Biotechnology
Volume85
Issue number8
Early online date11 May 2010
DOIs
Publication statusE-pub ahead of print - 11 May 2010

Fingerprint

Photocatalysis
Fusarium
Spores
Disinfection
disinfection
spore
well water
Water
Irrigation
irrigation
water
Protozoa
Water Purification
Sunlight
slurry
Bottles
Pathogens
Fungi
water treatment
Water treatment

Keywords

  • Fusarium sp.
  • titanium dioxide
  • natural well water
  • compound parabolic collector (CPC)
  • solar reactor

Cite this

Polo-López, M I ; Fernandez Ibanez, P ; García-Fernández, I ; Oller, I ; Salgado-Tránsito, I ; Sichel, C. / Resistance of Fusarium sp spores to solar TiO2 photocatalysis: influence of spore type and water (scaling-up results). In: Journal of Chemical Technology & Biotechnology. 2010 ; Vol. 85, No. 8. pp. 1038-1048.
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abstract = "BACKGROUND: Common irrigation water disinfection methods, which may be unable to inactivate all types of pathogens or even become phytotoxic themselves, are not very effective in controlling phytopathogens. Water disinfection by photocatalysis is a promising irrigation-water treatment for destroying phytopathogens without the drawbacks of conventional disinfection methods. Previous research has shown that solar photocatalytic technology can be used in the disinfection treatment of bacteria, protozoa and fungi, either through solar disinfection only. The purpose of this work was evaluate the TiO2 photocatalysis process to inactivate Fusarium spores in distilled and well water.RESULTS: This paper reports on the ability of solar photocatalysis to inactivate Fusarium spores in a solar bottle reactor and in a new 60 L compound parabolic collector (CPC) prototype reactor. Inactivation of Fusarium sp spores by titanium dioxide (Degussa P25) was evaluated in distilled and natural well water. The experiments were carried out using 5 or 6 h exposure to natural sunlight at the Plataforma Solar de Almeria (Southeast Spain). The highest Fusarium spore inactivation rate during experiments was achieved with a 30 L min−1 flow rate and 100 mg L−1 TiO2 concentration. Three different Fusarium spores (microconidia, macroconidia and chlamydospores) were individually evaluated to determine whether there were differences in resistance to the photocatalytic treatment. The results showed that chlamydospores were the most resistant, followed by macroconidia, and finally microconidia were the most sensitive.CONCLUSIONS: Microconidia, macroconidia and chlamydospores in distilled and well water were inactivated with TiO2 slurry in a 60 L CPC photoreactor, demonstrating for the first time that it is possible to scale-up photocatalytic treatment for use and reuse of water for irrigation.",
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Resistance of Fusarium sp spores to solar TiO2 photocatalysis: influence of spore type and water (scaling-up results). / Polo-López, M I; Fernandez Ibanez, P; García-Fernández, I; Oller, I; Salgado-Tránsito, I; Sichel, C.

In: Journal of Chemical Technology & Biotechnology, Vol. 85, No. 8, 11.05.2010, p. 1038-1048.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Resistance of Fusarium sp spores to solar TiO2 photocatalysis: influence of spore type and water (scaling-up results)

AU - Polo-López, M I

AU - Fernandez Ibanez, P

AU - García-Fernández, I

AU - Oller, I

AU - Salgado-Tránsito, I

AU - Sichel, C

PY - 2010/5/11

Y1 - 2010/5/11

N2 - BACKGROUND: Common irrigation water disinfection methods, which may be unable to inactivate all types of pathogens or even become phytotoxic themselves, are not very effective in controlling phytopathogens. Water disinfection by photocatalysis is a promising irrigation-water treatment for destroying phytopathogens without the drawbacks of conventional disinfection methods. Previous research has shown that solar photocatalytic technology can be used in the disinfection treatment of bacteria, protozoa and fungi, either through solar disinfection only. The purpose of this work was evaluate the TiO2 photocatalysis process to inactivate Fusarium spores in distilled and well water.RESULTS: This paper reports on the ability of solar photocatalysis to inactivate Fusarium spores in a solar bottle reactor and in a new 60 L compound parabolic collector (CPC) prototype reactor. Inactivation of Fusarium sp spores by titanium dioxide (Degussa P25) was evaluated in distilled and natural well water. The experiments were carried out using 5 or 6 h exposure to natural sunlight at the Plataforma Solar de Almeria (Southeast Spain). The highest Fusarium spore inactivation rate during experiments was achieved with a 30 L min−1 flow rate and 100 mg L−1 TiO2 concentration. Three different Fusarium spores (microconidia, macroconidia and chlamydospores) were individually evaluated to determine whether there were differences in resistance to the photocatalytic treatment. The results showed that chlamydospores were the most resistant, followed by macroconidia, and finally microconidia were the most sensitive.CONCLUSIONS: Microconidia, macroconidia and chlamydospores in distilled and well water were inactivated with TiO2 slurry in a 60 L CPC photoreactor, demonstrating for the first time that it is possible to scale-up photocatalytic treatment for use and reuse of water for irrigation.

AB - BACKGROUND: Common irrigation water disinfection methods, which may be unable to inactivate all types of pathogens or even become phytotoxic themselves, are not very effective in controlling phytopathogens. Water disinfection by photocatalysis is a promising irrigation-water treatment for destroying phytopathogens without the drawbacks of conventional disinfection methods. Previous research has shown that solar photocatalytic technology can be used in the disinfection treatment of bacteria, protozoa and fungi, either through solar disinfection only. The purpose of this work was evaluate the TiO2 photocatalysis process to inactivate Fusarium spores in distilled and well water.RESULTS: This paper reports on the ability of solar photocatalysis to inactivate Fusarium spores in a solar bottle reactor and in a new 60 L compound parabolic collector (CPC) prototype reactor. Inactivation of Fusarium sp spores by titanium dioxide (Degussa P25) was evaluated in distilled and natural well water. The experiments were carried out using 5 or 6 h exposure to natural sunlight at the Plataforma Solar de Almeria (Southeast Spain). The highest Fusarium spore inactivation rate during experiments was achieved with a 30 L min−1 flow rate and 100 mg L−1 TiO2 concentration. Three different Fusarium spores (microconidia, macroconidia and chlamydospores) were individually evaluated to determine whether there were differences in resistance to the photocatalytic treatment. The results showed that chlamydospores were the most resistant, followed by macroconidia, and finally microconidia were the most sensitive.CONCLUSIONS: Microconidia, macroconidia and chlamydospores in distilled and well water were inactivated with TiO2 slurry in a 60 L CPC photoreactor, demonstrating for the first time that it is possible to scale-up photocatalytic treatment for use and reuse of water for irrigation.

KW - Fusarium sp.

KW - titanium dioxide

KW - natural well water

KW - compound parabolic collector (CPC)

KW - solar reactor

U2 - 10.1002/jctb.2397

DO - 10.1002/jctb.2397

M3 - Article

VL - 85

SP - 1038

EP - 1048

JO - Journal of Chemical Technology and Biotechnology

T2 - Journal of Chemical Technology and Biotechnology

JF - Journal of Chemical Technology and Biotechnology

SN - 0268-2575

IS - 8

ER -