Effect of temperature, flow rate and pH on diesel fuel degradation using ozone technique

The influence of the operating parameters such as contact time, ozone flow rate, water temperature and pH was studied.To destruct diesel fuel by ozonation, the maximum degradation was achieved at 25°C, pH 7 and 830 mg/min ozone flow rate.The highest TPH removal was up to 75 % after 60 min.Increasing ozone flow rate positively affected TPH removal.A direct correlation existed between reaction time and removal percentage.Higher contact time exhibited higher removal efficiency in experiments.The pseudo first-order rate constant depended on the ozone flow rate (mL/min).The highest t 1/2 of 30 min was observed for 60 min ozonation.Half-life times were 28, 53 and 99 min for TPH with ozone flow rate of 430, 600 and 830 (mL/min), respectively.