Abstract
The rapid increase in population and urbanization leads to the scarcity of water resources in the present era. Therefore, effective wastewater treatment is a prerequisite for a growing economy. Development and implementing the advanced treatment technologies of wastewater with high efficiency and low capital is difficult. In the recent advancements among various treatment processes, nanomaterial science has been attracting the attention of researchers. However, limited collective knowledge is available in this context. The chapter reviews the potential of nano catalysis's process, mechanism, and current drawbacks in treatment technologies. It explains the different nano catalysts that are widely utilized for the treatment and removal of organic and inorganic pollutants in water and wastewater and discusses the nano-based photocatalytic, nano-based electrocatalysis, nano-based Fenton catalysis and their efficiency in various removal of pollutants from wastewater.
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