ABSTRACT
The population in the past century quadrupled along with the sevenfold increase in the demand for water. Global water pollution has now become the ticking time bomb and requires an efficient set of technologies, policies, and scientific discoveries on incredibly diverse scales. This chapter discusses the current research in innovative and emerging water treatment technologies based on chitin and chitosan. It focuses on the chitosan-based emerging technology for efficient water purification. Currently, the application of chitosan as an adsorbent has fascinated awareness in water treatment owing to its high content of hydroxyl and amino functional groups. This miraculous polysaccharide is the deacetylated form of chitin and has a high potential for the adsorption of metal ions, dyes, and proteins, and hence is the best candidate for releasing pollutants from water and wastewater. The global scientific approach of this chitosan-based technology is being suggested to meet the needs of the current sustainable development goal.
