| VILLAR-NAVARRO, Elena, Irina LEVCHUK, Juan José RUEDA-MÁRQUEZ, Tomáš HOMOLA, Miguel Ángel MORIÑIGO, Riku VAHALA and Manuel MANZANO. Inactivation of simulated aquaculture stream bacteria at low temperature using advanced UVA- and solar-based oxidation methods. Solar Energy. Elsevier Ltd., 2021, vol. 227, October, p. 477-489. ISSN 0038-092X. Available from: https://dx.doi.org/10.1016/j.solener.2021.09.029. |
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@article{1793118,
author = {VillarandNavarro, Elena and Levchuk, Irina and RuedaandMárquez, Juan José and Homola, Tomáš and Moriñigo, Miguel Ángel and Vahala, Riku and Manzano, Manuel},
article_number = {October},
doi = {http://dx.doi.org/10.1016/j.solener.2021.09.029},
keywords = {Aquaculture streams; UVA-based AOPs; Solar AOPs; Low temperature},
language = {eng},
issn = {0038-092X},
journal = {Solar Energy},
title = {Inactivation of simulated aquaculture stream bacteria at low temperature using advanced UVA- and solar-based oxidation methods},
url = {https://doi.org/10.1016/j.solener.2021.09.029},
volume = {227},
year = {2021}
}
TY - JOUR
ID - 1793118
AU - Villar-Navarro, Elena - Levchuk, Irina - Rueda-Márquez, Juan José - Homola, Tomáš - Moriñigo, Miguel Ángel - Vahala, Riku - Manzano, Manuel
PY - 2021
TI - Inactivation of simulated aquaculture stream bacteria at low temperature using advanced UVA- and solar-based oxidation methods
JF - Solar Energy
VL - 227
IS - October
SP - 477-489
EP - 477-489
PB - Elsevier Ltd.
SN - 0038092X
KW - Aquaculture streams
KW - UVA-based AOPs
KW - Solar AOPs
KW - Low temperature
UR - https://doi.org/10.1016/j.solener.2021.09.029
N2 - In this work the effect of water temperature (6 ± 1 °C and 22 ± 1 °C) on inactivation of bacteria (104 –106 CFU mL−1; Pseudomonas spp., Aeromonas spp. and Enterobacter spp.) in simulated aquaculture streams (SAS) using UVA based advanced oxidation processes (AOP) (H2O2-assisted UVA; photocatalysis; H2O2-assisted photocatalysis) and solar driven AOPs (H2O2-assisted solar disinfection, SODIS) was studied. Efficiency at 22 °C in terms of inactivation rate was higher using H2O2-assisted photocatalysis (H2O2/UVA-TiO2/polysiloxane) > H2O2-assisted UVA disinfection (UVA/H2O2 – 10 mg L-1) > photocatalysis (UVA-TiO2/polysiloxane) > UVA disinfection. At low temperature (6 °C) the inactivation rate increased with SODIS/H2O2 > SODIS > H2O2-assisted UVA disinfection (UVA/H2O2 – 10 mg L-1) > H2O2-assisted photocatalysis (H2O2/UVA-TiO2/polysiloxane) > photocatalysis (UVA-TiO2/polysiloxane). The main results indicate that the inactivation rates increased when hydrogen peroxide (10 mg L-1) was used during H2O2-assisted UVA disinfection and photocatalysis. In addition, exposure of SAS to hydrogen peroxide for 24 h (in absence of light) at room temperature decreased the subsequent exposure UVA irradiation dose by almost four times. Drastic increase of inactivation rate was observed at low water temperature (6 ± 1 °C) when UVA- and solar-based AOPs were employed compared to 22 ± 1 °C. The treatment with SODIS proved to be more effective in Finland than in Spain. The effect of the low temperature (6 ± 1 °C) was proposed as a critical factor during UVA disinfection (UVA/H2O2 and photocatalysis) that can increase the disinfection rate constant (kmax) by 1.3–5.2 times, leading to a reduction of the treatment costs (€ m−3) by 1.3–3.3 times. The mechanism of observed enhanced disinfection at low water temperature (6 ± 1 °C) when natural solar light and UVA are employed as irradiation sources for UVA/H2O2 and photocatalytic bacteria inactivation was proposed. No regrowth was observed in case of H2O2-assisted AOPs.
ER -
VILLAR-NAVARRO, Elena, Irina LEVCHUK, Juan José RUEDA-MÁRQUEZ, Tomáš HOMOLA, Miguel Ángel MORIÑIGO, Riku VAHALA and Manuel MANZANO. Inactivation of simulated aquaculture stream bacteria at low temperature using advanced UVA- and solar-based oxidation methods. \textit{Solar Energy}. Elsevier Ltd., 2021, vol.~227, October, p.~477-489. ISSN~0038-092X. Available from: https://dx.doi.org/10.1016/j.solener.2021.09.029.
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