Comparison of radiant intensity in aqueous media using experimental and numerical simulation techniques.

Accurately modelling the propagation of radiant intensity in aqueous environments poses significant challenges for both academia and industry, due to complex interactions like absorption, scattering, and reflection. This study aims to improve the accuracy of optical modeling in water-based systems by comparing experimental data with numerical simulation techniques, addressing the need for more reliable simulation methods in multiple applications like treatment of water and environmental monitoring.Implementation has been done by analyzing how the method compares with the discrete ordinate method, radiometry, and actinometry.

Wavelength synergistic effects in continuous flow-through water disinfection systems.

The past decade's development of UV LEDs has fueled significant research in water disinfection, with widespread debate surrounding the potential synergies of multiple UV wavelengths. This study analyses the use of three UV sources (265, 275, and 310 nm) on the inactivation of bacteria in two water matrixes At maximum intensity in wastewater, individual inactivation experiments in a single pass set-up (Flow rate = 2 L min, Residence time = 0.75 s) confirmed the 265 nm light source to be the most effective (2.

Role of the active chlorine generated in situ on the photoelectrocatalytic inactivation of bacteria and fungi with TiO nanotubes.

Immobilised TiO nanotube (TiO-NT) electrodes were grown via electrochemical anodisation in an aqueous solution containing fluoride ions at 10, 20 and 30 V. The photocatalytic (PC) and photoelectrocatalytic (PEC) activity of TiO-NTs electrodes in the oxidation of methanol and the inactivation of bacteria and fungi was studied in different chloride salts electrolytes. Low concentrations of electrochemically generated oxidising species, such as free chlorine, were measured in experiments at pH 8.