There are few studies on the effect of salinity on aquaculture systems, which mainly focus on fish mortality and the influence of salinity increase on the susceptibility of fish to certain pathogens [19, 20]. This current study is the first study to reveal the possibility

of application of TFFBR to aquaculture systems with saline waters. The findings of this research, clearly demonstrates that there is no substantial effect of salinity on A. hydrophila inactivation at the level of salt observed in sea water. So, it is evident that this TFFBR technique may be applicable to aquaculture systems containing fresh water, brackish water or marine water. The effect of turbidity was also investigated in this study by flowing contaminated RO NCT-501 water with different turbidity levels across the TFFBR under high solar irradiance conditions. The findings of this study confirmed a trend show by Hirtle [45], which was that the presence of inorganic particles (kaolin) decreased the efficiency of solar disinfection treatment. Hirtle explored the pre-treatment for solar disinfection by using filters in 2 litre PET water bottles having a hole at the bottom and using a peristaltic pump to flow the

turbid water samples (kaolin-containing water with different turbidity levels) contaminated with E. coli under total sunlight condition of 322–1068 W m-2[45]. In contrast, Wilson demonstrated that there was no obvious Trichostatin A cost trend between the presence of inorganic kaolin particles across a range of turbidity levels in water samples from 0–200 NTU and E .coli log reduction under various sunlight irradiances for

7 h [28]. In another recent selleck inhibitor research study by Fontán-Sainz et al. (2012[46]) using a solar CPC reactor, there was a significant loss of efficiency in the inactivation of Crytosporidium parvum oocysts under full sunlight conditions when the water turbidity increased from 5 to 30 NTU [46]. The study of Wilson [28] used a batch culture reactor whereas Fontán-Sainz et al. [46] used an uncatalysed solar system for their disinfection treatment and these are both different methods compared to the present study using the continuous flow TFFBR system. The present study used a different TiO2 reactor (immobilised form) and found a similar pattern of decreased microbial inactivation with increased turbidity. Chen et al. aminophylline (2010[47]) used kaolin in a lab-scale fixed TiO2 photocatalytic experiment to examine the microbial removal efficiency through a reactor [47]. In their study, TiO2 was synthesized by the sol–gel technique and they deposited 100 μl of phosphate buffer saline (PBS) containing bacteria on to a TiO2 coated glass plates which in turn was exposed to UV irradiation for 30 min. The authors demonstrated that a high concentration of kaolin particles (water with 100 NTU) was required to reduce the solar photocatlytic inactivation of E. coli and S. aureus in their system.