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@article{1672176,
author = {MorenoandAndrés, Javier and RuedaandMárquez, Juan José and Homola, Tomáš and Vielma, Jouni and Morínígo, Miguel Ángel and Mikola, Anna and Sillanpää, Mika and AcevedoandMerino, Asunción and Nebot, Enrique and Levchuk, Irina},
article_location = {Oxford},
article_number = {AUG 15 2020},
doi = {http://dx.doi.org/10.1016/j.watres.2020.115928},
keywords = {Advanced oxidation processes; UVC-LEDs; Recirculation aquaculture systems (RAS); Natural occurring bacteria; UV inactivation; Persulfates},
language = {eng},
issn = {0043-1354},
journal = {Water Research},
title = {A comparison of photolytic, photochemical and photocatalytic processes for disinfection of recirculation aquaculture systems (RAS) streams},
url = {https://doi.org/10.1016/j.watres.2020.115928},
volume = {181},
year = {2020}
}
TY - JOUR
ID - 1672176
AU - Moreno-Andrés, Javier - Rueda-Márquez, Juan José - Homola, Tomáš - Vielma, Jouni - Morínígo, Miguel Ángel - Mikola, Anna - Sillanpää, Mika - Acevedo-Merino, Asunción - Nebot, Enrique - Levchuk, Irina
PY - 2020
TI - A comparison of photolytic, photochemical and photocatalytic processes for disinfection of recirculation aquaculture systems (RAS) streams
JF - Water Research
VL - 181
IS - AUG 15 2020
SP - 1-12
EP - 1-12
PB - Elsevier
SN - 00431354
KW - Advanced oxidation processes
KW - UVC-LEDs
KW - Recirculation aquaculture systems (RAS)
KW - Natural occurring bacteria
KW - UV inactivation
KW - Persulfates
UR - https://doi.org/10.1016/j.watres.2020.115928
L2 - https://doi.org/10.1016/j.watres.2020.115928
N2 - The development of technologically advanced recirculation aquaculture systems (RAS) implies the reuse of water in a high recirculation rate (>90%). One of the most important phases for water management in RAS involves water disinfection in order to avoid proliferation of potential pathogens and related fish diseases. Accordingly, different approaches have been assessed in this study by performing a comparison of photolytic (UV-LEDs) at different wavelengths (lambda = 262, 268 and 262 + 268 nm), photochemical (UVLEDs/H2O2, UV-LEDs/HSO and UV LEDs/S2O82-) and photocatalytic (TiO2/SiO2/UV-LEDs and ZnO/SiO2/UV-LEDs) processes for the disinfection of water in RAS streams. Different laboratory tests were performed in batch scale with real RAS stream water and naturally occurring bacteria (Aeromonas hydrophyla and Citrobacter gillenii) as target microorganisms. Regarding photolytic processes, higher inactivation rates were obtained by combining lambda(262)(+)(268) in front of single wavelengths. Photochemical processes showed higher efficiencies by comparison with a single UV-C process, especially at 10 mg L-1 of initial oxidant dose. The inactivation kinetic rate constant was improved in the range of 15-38%, with major efficiency for UV/H2O2 UV/HSO > UV/S2O82-. According to photocatalytic tests, higher efficiencies were obtained by improving the inactivation kinetic rate constant up to 55% in comparison with a single UV-C process. Preliminary cost estimation was conducted for all tested disinfection methods. Those results suggest the potential application of UV-LEDs as promoter of different photochemical and photocatalytic processes, which are able to enhance disinfection in particular cases, such as the aquaculture industry.
ER -
MORENO-ANDRÉS, Javier, Juan José RUEDA-MÁRQUEZ, Tomáš HOMOLA, Jouni VIELMA, Miguel Ángel MORÍNÍGO, Anna MIKOLA, Mika SILLANPÄÄ, Asunción ACEVEDO-MERINO, Enrique NEBOT a Irina LEVCHUK. A comparison of photolytic, photochemical and photocatalytic processes for disinfection of recirculation aquaculture systems (RAS) streams. \textit{Water Research}. Oxford: Elsevier, 2020, roč.~181, AUG 15 2020, s.~1-12. ISSN~0043-1354. Dostupné z: https://dx.doi.org/10.1016/j.watres.2020.115928.
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