不同高级氧化法对低浓度对甲基苯磺酸废水降解效能比较

Comparison of p-TSA Degradation by Different Advanced Oxidation Processes in Low Concentration Aqueous Solutions

采用光降解、超声波降解、臭氧氧化、光催化降解、臭氧-光催化、超声-臭氧氧化、超声波-光催化、臭氧氧化-超声波-光催化方法,对水中低浓度对甲基苯磺酸进行降解。通过紫外分光光度法、高效液相色谱法、化学需氧量和总有机碳测定,考察p-TSA去除效果。结果表明,臭氧-光催化、超声-臭氧化、超声波-光催化、臭氧化-超声波-光催化4种系统对水中对甲基苯磺酸有很好的去除效果,且均具有协同作用,臭氧化-超声波-光催化协同效率更高。

The degradation of p-TSA was carried out by means of the UV, US, O3, UV/TiO2, US/O3, O3/UV/ TiO2, US/UV/TiO2 and O3/US/UV/TiO2 advanced oxidation processes. The drug degradation was monitored during the experiment by ultraviolet spectroscopy, infrared spectroscopy, mass spectrum, gas chromatography, high performance liquid chromatography, chemical oxygen demand and total organic carbon analysis. The result suggested that US/O3, O3/ UV/TiO2, US/UV/TiO2 and O3/US/UV/TiO2 systems can remove the drug more efficiently from the waters containing p- TSA, and they were able to synergistically accelerate the degradation of p-TSA, and O3/US/UV/TiO2 synergy was more efficient.