超声波-光催化降解处理苯酚的实验研究

Experimental study on degradation of phenol with ultrasonic-photocatalysis

为了证明超声波—光催化氧化法处理水中的化学污染物的效果,通过光催化氧化法和超声波氧化法联合处理苯酚,对三种降解体系的降解效果做了比较,分析pH、催化剂、时间等影响超声—光催化降解效率的因素,寻求超声波-光催化降解苯酚的适宜条件,研究结果表明：超声—光催化联合法比单一的超声波氧化法、光催化法降解率要高。在pH为6.0~7.0,催化剂的投加量为0.4 g,时间为2 h的条件下苯酚的降解效果最好。

In order to prove the effect of using ultrasonic - photocatalysis to deal with the chemical pollutants in water, the photocatalysis oxidation method and the ultrasonic oxidation method were used together to deal with phenol. The degradation effects of the three degradation systems were compared and the factors of pH, catalyst and time, which can affect the degradation efficiency of the ultrasonic - photocatalysis method, were analyzed to seek the suitable conditions for degradation of phenol with ultrasound - photocatalysis. The study results indicate that the degradation rate of ultrasonic - photocatalysis is higher than that of a single method, ultrasonic or photocatalysis and when the pH is between 6.0 and 7.0, the dosage of catalyst is 0.4 gram and the time is 2 hours, the degradation effect of phenol is the best.