Ataturk University, Environmental Problem Research Center, 25240 Erzurum, Turkey.
J Environ Manage. 2012 Aug 15;104:127-41. doi: 10.1016/j.jenvman.2012.03.028. Epub 2012 Apr 9.
Ultrasonic treatment of recalcitrant contaminants has been of utmost interest recently due to the advantages of the cavitation phenomenon, which enhances the efficiency of Advanced Oxidation Processes (AOPs). The current review summarizes the use of ultrasound with biochemical, electrochemical, ozonation, photolysis, photocatalysis and Fenton processes for the degradation of mostly textile dyes and dyebath. There is a few studies about ultrasonic degradation of textile effluents or wastewater due to highly variable contents. It was found that the most common use of ultrasonic irradiation for dye degradation is the combined with the heterogeneous catalysts/adsorbents. The reaction mechanism of the ultrasonic irradiation in heterogeneous media was well investigated and understood. However, there is still lack of information about the reaction mechanism of ultrasonic irradiation in the homogeneous solutions, especially containing ferrous ions. Fenton reaction is already fast itself and gives effective degradation during the oxidation. Therefore, addition of ultrasonic irradiation to Fenton oxidation was less effective compared to other auxiliary processes. It should also be noted that ultrasonic irradiation had a negative effect on dye degradation during combined with electro-oxidation process.
由于空化现象的优势，超声处理顽固性污染物最近引起了极大的兴趣，这提高了高级氧化工艺（AOPs）的效率。本综述总结了超声在生化、电化学、臭氧、光解、光催化和芬顿工艺中用于降解大多数纺织染料和染浴的应用。由于含量变化很大，几乎没有关于超声降解纺织废水或废水的研究。结果发现，超声辐射降解染料最常见的用途是与多相催化剂/吸附剂联合使用。超声辐射在多相介质中的反应机制已经得到了很好的研究和理解。然而，关于均相溶液（特别是含有亚铁离子的溶液）中超声辐射反应机制的信息仍然缺乏。芬顿反应本身就很快，在氧化过程中能有效地进行降解。因此，与其他辅助工艺相比，将超声辐射添加到芬顿氧化中效果较差。还应注意的是，超声辐射与电氧化过程结合使用时对染料降解有负面影响。
