Abstract
The huge generation of industrial effluents and their inefficient treatments make the environment and public health in danger. The variety of pollutants present in the effluents depending upon the type of industry from which they are coming out, which are highly toxic and recalcitrant. Biological (conventional) treatment methods fail for their effective degradation and mineralization. Wastewaters characterize by such compounds need cutting-edge and innovative technologies for their effective degradation and removal. In this review, we have highlighted some of the most preferable treatment methods with their mechanisms and applications in the context of wastewater containing recalcitrant compounds. It has been reported in the literature that Fenton-based approaches are one of the most efficient and versatile processes for degradation/mineralization of recalcitrant compounds. However, despite several advantages, some disadvantages are associated with these processeswhich make complications for their full-scale applications. Hence, we have to appropriately select the treatment options, which could be efficient enough and serve the overall purpose.