Inactivation of simulated aquaculture stream bacteria at low temperature using advanced UVA- and solar-based oxidation methods

• Enhanced bacteria inactivation at low water temperature by UVA- and solar-based AOPs. Mechanism of suggested. Preliminary cost estimation AOPs was performed. Carbon footprint in Spain Finland compared. In this work the effect (6 ± 1 °C 22 °C) on (10 4 –10 6 CFU mL ?1 ; Pseudomonas spp. , Aeromonas spp . Enterobacter spp.) simulated aquaculture streams (SAS) using UVA based advanced oxidation processes (AOP) (H 2 O -assisted UVA; photocatalysis; H photocatalysis) solar driven disinfection, SODIS) studied. Efficiency terms rate higher photocatalysis /UVA-TiO /polysiloxane) > disinfection (UVA/H – 10 mg L -1 ) (UVA-TiO disinfection. At increased with SODIS/H SODIS /polysiloxane). The main results indicate that rates when hydrogen peroxide used during photocatalysis. addition, exposure SAS to for 24 h (in absence light) room decreased subsequent irradiation dose almost four times. Drastic increase observed were employed compared °C. treatment proved be more effective than Spain. proposed as a critical factor can constant (k max 1.3–5.2 times, leading reduction costs (€ m ?3 1.3–3.3 mechanism enhanced natural light are sources UVA/H photocatalytic proposed. No regrowth case