The use of chlorine bleaching in study and pulp industry has resulted in chlorinated phenol contaminated wastewater from that industry. A new wastewater treatment process, sonophotodegradation of 2,4,6-trichlorophenol (TCP) in a heterogeneous aqueous system was investigated and reported in this study. TCP was degraded with ultrasonic or ultraviolet irradiation or a combination of both, in the p...

The accelerated sonophotocatalytic degradation of Reactive Red (RR) 120 dye under visible light using dye sensitized TiO2 activated by ultrasound has been carried out. The effect of sonolysis, photocatalysis and sonophotocatalysis under visible light has been examined to study the influence on the degradation rates by varying the initial substrate concentration, pH and catalyst loading to ascer...

An electric field built inside a crystal was proposed to enhance photoinduced carrier separation for improving photocatalytic property of semiconductor photocatalysts. However, a static built-in electric field can easily be saturated by the free carriers due to electrostatic screening, and the enhancement of photocatalysis, thus, is halted. To overcome this problem, here, we propose sonophotoca...

The accelerated photocatalytic degradation of industrial wastewater using titanium dioxide as catalyst activated by ultrasound has been investigated in photocatalytic reactor using ultraviolet light source of 125 W. The effect of number of parameters, such as pH, oxidant concentration and catalyst dose has been examined to study the degradation rates in sonolytic, photocatalytic and sonophotoca...

Advanced oxidation processes are promising techniques for water remediation and degradation of micropollutants in aqueous systems. Since single such as sonolysis photocatalysis exhibit limitations, combined AOP systems can enhance efficiency. The present work addresses the synergistic intensification potential an ultrasound-assisted (sonophotocatalysis) bisphenol A with a low-frequency sonotrod...

The degradation of alachlor has been investigated using sonolysis (US), photocatalysis (UV) and sonophotocatalysis (US/UV) using three photocatalyst viz. TiO2 (mixture of anatase and rutile), TiO2 (anatase) and ZnO. The effect of photocatalyst loading on the extent of degradation of alachlor has been investigated by varying TiO2 (both types) loading over the range of 0.01 g/L to 0.1 g/L and ZnO...