Mechanistic modelling of solar disinfection (SODIS) kinetics of Escherichia coli, enhanced with H2O2 – Part 2: Shine on you, crazy peroxide

In this second part of the development a mechanistic kinetic model solar inactivation E. coli enhanced with hydrogen peroxide, we evaluate mechanisms based on photonic and integrate them into dark process developed in Part 1. The direct was modelled using series-event accumulation damage by photons it coupled used 1 for modelling caused radicals multiple target – hit model, including recovery constant to define ability cells face specific damage. Catalase superoxide dismutase inactivation, intracellular photo-Fenton reaction, overproduction O2•- NADH/NAD+ cycle under light were included model. Finally, synergistic effect thermal expression terms an Arrhenius equation. parameters obtained regression experimental data at different temperatures, radiation, as well initial cellular H2O2 concentrations. Our predictions can accurately describe SODIS H2O2, thus being very useful estimate disinfection profiles routes irradiance conditions, water temperature concentration. integrated mechanism SODIS/H2O2 is provided.