Nanomaterials in wastewater treatments

Abstract The generation of large amount of wastewater due to modern globalization has brought huge challenges for wastewater treatment as they pose serious threat to living organisms and environment. This has urged the scientific community to look for newer innovations and novel technologies. Some fundamental and practical methodologies for wastewater remediation processes have found nanomaterials as the most efficient and potential materials to support this sustainable concern. Among various nanomaterials, metal oxides have shown great promise due to their unique physicochemical properties. By supporting these, nanomaterials on suitable support materials have significantly improved their performances in wastewater treatment processes. Keeping an eye on these developments, this chapter overviews various advantages associated with metal oxide nanomaterials and their improvement after modification with support materials like graphene oxide and biopolymers. Various graphene oxide and biopolymer-supported metal oxide nanomaterials are discussed for the removal of wastewater pollutants such as dyes, heavy metals, and pesticides.