To investigate the effect of temperature on the TC degradation rate, experiments were done with various temperature varying from 25 to 65 °C. With increasing temperature from 25 to 65 °C, the degradation rate constant increased from 0.0229 to 0.1042 min −1. Complete TC degradation occurs after 40, 60 and 75 min of reaction at 65, 55 and 45 °C respectively. The activation of S2O82− can be done under heat to form SO4-• radical as following Eq. (15). Therefore, complete removal of TC by high temperature could be as a result of thermally activated S2O82− oxidation. Moreover, the increase of temperature significantly enhanced the cavitation activity and chemical effects, resulting in greater degradation rate of TC by US/S2O82− process [22, 60].15 S2O8−2+→Termal−activation2SO4−•30°C<T<99°C