1. Chitosan-based polymer nanocomposites for heavy metal removal / Malathi Sampath, Cross Guevara Kiruba Daniel, Vaishnavi Sureshkumar, Muthusamy Sivakumar, and Sengottuvelan Balasubramanian -- 2. Gum-polysaccharide-based nanocomposites for the treatment of industrial effluents / Hemant Mittal, Balbir Singh Kaith, Ajay Kumar Mishra, and Shivani Bhardwaj Mishra -- 3. A view on cellulosic nanocomposites for treatment of wastewater / D. Saravana Bavan and G.C. Mohan Kumar -- 4. Removal of heavy metals from water using PCL, EVA-bentonite nanocomposites / Derrick S. Dlamini, Ajay K. Mishra, and Bhekie B. Mamba -- 5. Role of polymer nanocomposites in wastewater treatment / Balbir Singh Kaith, Saruchi, Vaneet Thakur, Ajay Kumar Mishra, Shivani Bhardwaj Mishra, and Hemant Mittal -- 6. Nanoparticles for water purification / Pankaj Attri, Rohit Bhatia, Bharti Arora, Jitender Gaur, Ruchita Pal, Arun Lal, Ankit Attri, and Eun Ha Choi -- 7. Electrochemical ozone production for degradation of organic pollutants via novel electrodes coated by nanocomposite materials / Mahmoud Abbasi and Ali Reza Soleymani -- 8. Core-shell nanocomposites for detection of heavy metal ions in water / Sheenam Thatai, Parul Khurana, and Dinesh Kumar -- 9. Conducting polymer nanocomposite-based membrane for removal of escherichia coli and total coliforms from wastewater / Hema Bhandari, Swati Varshney, Amodh Kant Saxena, Vinod Kumar Jain, and Sundeep Kumar Dhawan -- 10. Titanium dioxide-based materials for photocatalytic conversion of water pollutants / Sonia A.C. Carabineiro, Adrian M.T. Silva, Claudia G. Silva, Ricardo A. Segundo, Goran Drazic, Jose L. Figueiredo, and Joaquim L. Faria.