Part 1: BASICS and FUNDAMENTALS1. A preface to the chitosan-biopolymer, its origin, and properties2. Chitin and chitosan manufacturing and processing techniques3. Chitosan-based nanomaterials, multiple forms, and characterization4. Degradability of chitosan nanostructures in the natural environment5. Functional properties of chitosan-based nanomaterialPart 2: Emerging applications OF CHITOSAN-BASED NANOMATERIALS6. Chitosan-based nanomaterials in decontamination of industrial products7. Chitosan-based nanomaterials in decontamination of pharmaceutical products 8. Chitosan-based nanomaterials in decontamination of heavy metals9. Chitosan-based nanomaterials in decontamination of inorganic species10. Chitosan-based nanomaterials in decontamination of organic dyes11. Chitosan-based nanomaterials in decontamination of pesticides12. Chitosan-based nanomaterials in decontamination of hydrocarbons13. Chitosan-based nanomaterials in decontamination of phenols and biphenyls14. Chitosan-based nanomaterials in decontamination of detergents15. Chitosan-based nanomaterials in decontamination of plasticizersPart 3: CURRENT CHALLENGES AND FUTURE SCOPE16. Safety, regulations, and economic impact of chitosan nanostructures17. Eco- and toxicological impact of chitosan nanostructures18. Current status of chitosan nanostructures in the field of environmental remediation¿¿¿¿19. Challenges and Future prospects of chitosan nanostructures in environmental remediation