Microbial inactivation of groundwater using ultrasound and chemical additives (H2O2 and TiO2)

Ultrasonication is promising intensified technique for chemical processing applications, advance oxidation processes and water disinfection. Water disinfection is major concern in water treatment technologies due to high risk of water borne diseases. Present study investigated the bacterial disinfection of groundwater using ultrasound and chemical additives such as hydrogen peroxide (H2O2) and titanium dioxide (TiO2). Combined use of ultrasound and chemical additives enhances the rate of disinfection. The experiments were performed on groundwater collected from the hand pump, has shown >= 99.9% bacterial inactivation using ultrasonication in 60 min. Use of H2O2 and TiO2 improves the disinfection rate. Combination of ultrasound and H2O2 achieved complete disinfection within 20 min.