Book excerpt: Nano-biosorbents for Decontamination of Water, Air, and Soil Pollution explores the properties of nanobiosorbents and their applications in the removal of contaminants from the natural environment. The use of nanobiosorbents for environmental protection is a combinational approach that incorporates nanotechnology with naturally occurring biopolymers that form an amalgamation of nano-biopolymers used as sorbent materials in the removal of a variety of contaminants from wastewaters. This is an important reference source for materials scientists, bioscientists and environmental scientists who are looking to understand how nanobiosorbents are being used for a range of environmental applications. Highlights the environmental applications of chitosan-based, cellulose-based and polymer-based nanoscale biosorbents Explains the advantages of using different types of nanobiosorbents for soil, water and air purification applications Assesses the challenges associated with manufacturing nanobiosorbents cheaply and on an industrial scale