超声波强化零价铁/过硫酸钠体系降解1,2-二氯苯

Degradation of 1,2-dichlorobenzene by zero valent iron/sodium persulfate system enhanced by ultrasound

采用超声波强化零价铁/过硫酸钠体系(UV/Fe(0)/SPS)降解水中的1,2-二氯苯,考察了初始pH值、零价铁投加量、过硫酸盐投加量、超声波功率等对1,2-二氯苯降解的影响。实验结果表明,1,2-二氯苯降解的最佳实验条件为初始pH值为5,零价铁投加量为150mg·L-1,过硫酸盐投加量为200mg·L-1,1,2-二氯苯的去除率达到了91.1%。不同体系的对比实验显示,Fe(0)/US/SPS体系的1,2-二氯苯去除率显著高于Fe(0)/US、US/SPS与Fe(0)/SPS体系,超声波对Fe(0)/SPS体系有协同作用,可显著提升1,2-二氯苯的去除率。

The degradation of 1,2-dichlorobenzene in water by UV/Fe(0)/SPS was enhanced by ultrasound.The effects of initial pH value,dosage of zero valent iron,dosage of persulfate and ultrasonic power on the degradation of 1,2-dichlorobenzene were investigated.The results showed that the best experimental conditions for the degradation of 1,2-dichlorobenzene were as follows:the initial pH value was 5,the dosage of zero valent iron was 150 mg· L-1,the dosage of persulfate was 200 mg·L-1,and the removal rate of 1,2-dichlorobenzene reached 91.1%.The results showed that the removal rate of 1,2-dichlorobenzene in Fe(0)/US/SPS system was significantly higher than that in Fe(0)/US,US/SPS and Fe(0)/SPS system.Ultrasound had synergistic effect on Fe(0)SPS system,which could significantly improve the removal rate of 1,2-dichlorobenzene.