Overview of Catalytic Removal of Parabens from Water and Wastewater

This is the authors' abstract. We don't add key points for this paper.

The increased consumption of parabens and associated health hazards has necessitated the development of water treatment technologies capable of removing parabens to desired levels. Among the various available treatment options, catalytic degradation has the advantages of faster reaction kinetics, increased reactive species formation, and no sludge disposal problem. Accordingly, an overview of recent advances in catalytic systems briefing removal, mineralization, and performance comparison between catalysts is essential to scale up and transfer lab-scale results to real-scale applications. The current review highlights the superiority of photocatalysis, Fenton’s, persulfate, and ozonation/catalytic ozonation systems to eliminate parabens. The performance evaluation and economic feasibility of catalytic treatment systems were identified using mathematical models. Additionally, density functional theory calculations were carried out to assess the fundamental mechanism associated with paraben degradation by TiO2 and to develop a molecular-level understanding of synthesizing catalysts that can effectively degrade parabens. In a nutshell, this review acts as a roadmap to show the feasibility of catalytic treatment technologies to eliminate parabens from the water environment.