1. Nano- and Microcellulose Based Adsorption Materials in Water Treatment 2. Adsorption of Dyes on to Modified Titanium Dioxide 3. Cross-Linked Chitosan and Cyclodextrin as Functional Adsorbents in Water Treatment 4. Novel Sorbents from Low-Cost Materials for Water Treatment 5. Sol-Gel Synthesized Titanosilicates for the Uptake of Radionuclides from Aqueous Solutions 6. Hydrothermal Carbonization in the Synthesis of Sustainable Porous Carbon Materials 7. Hybrid Bio-Nanocomposites and their Application for the Removal of Rare Earth Elements 8. Selective Recovery of Rare Earth Elements from Diluted Aqueous Streams Using N- and O- Coordination Ligand Grafted Organic-Inorganic Hybrid Composites