Photocatalytical Deactivation of Pathogens for Municipal Wastewater Reusing

Inactivation of Staphylococcus aureus in water by means of solar photocatalysis using metal doped TiO2 semiconductors

“…Residual populations after photocatalysis are quite considerable, particularly when Cr‐TiO 2 was applied. This outcome verifies the resistant nature and features of S. aureus , as has already been documented in other studies . Staphylococcus aureus cells are very adaptable to extreme conditions, like the environment of ROS, which are generated during photocatalysis .…”

“…Staphylococcus aureus cells are very adaptable to extreme conditions, like the environment of ROS, which are generated during photocatalysis . The thick cell membrane has a certain resistance to UV irradiation but not to the •OH . During the initial period of each treatment, reaction between the produced •OH and the bacterium was accelerated because of the high cellular density, while in the course of the process there was a retardation of the decay.…”

Prospects and Risks Related to Potential Transmission of COVID-19 and Other Viruses and Disinfection in Sewage Effluent

“…Numerous researches have emphasized that traditional water cleaning techniques that depend on basic microbial treatments and chlorination are quite unsuccessful in eradicating hazardous pathogens such as viruses. Major drawback of chlorination is formation of chlorinated disinfecting agents as by-products (Wang et al, 2015) for instance Halogenic acetic acids (HAAs) and Trihalomethanes (THMs) which are extremely carcinogenic for the humans. Another approach is alternative oxidants which is known as ozone and ozone-hydrogen peroxide AOP which is one of the most proficient solutions that may significantly decrease the risk sat by microorganisms of evolving concerns within treated sewage effluent (TSE) (Wang et al, 2015).…”