Recent Advances in Wastewater Treatment

During the past few decades growing population and rapid industrialization led to the contamination of the world water supply chain due to the generation of toxic pollutants into aqueous streams. These toxic pollutants adversely affect not only humans but also the environment. Water is an essential substance of living beings and to fulfil their demand, wastewater needs to be treated, protected, and conserved globally. Although tremendous efforts have been made to develop methods for wastewater treatment from time to time, the world has been in continuous demand for sustainable methods to treat wastewater water. Nowadays, nanomaterials-based technological advancements in wastewater treatment have gained more attention, owing to their exceptional properties like excellent surface area, reactivity, adsorption, catalytic properties, ease of functionalization, dispersibility, and recyclability. The key advantage of nanotechnology in wastewater treatment is its ability to remove pollutants at low concentrations, which are otherwise difficult to eliminate using conventional methods. The present book chapter describes nanomaterials-based advanced adsorbents such as iron, copper and titanium, carbon nanotubes, graphene, and polymer-based nanoadsorbent for wastewater treatment.