Amrane Abdeltif is Professor in the ENSCR – Laboratory UMR CNRS 6226 Institut des Sciences Chimiques de Rennes, France. His research area of interest is fermentation and biological treatment processes, optimisation, modelization, environmental bioengineering, fungal physiology, gas treatment, and wastewater treatment. Aymen Amine Assadi is Associate Professor in the the ENSCR – Laboratory UMR CNRS 6226 Institut des Sciences Chimiques de Rennes, France. His area of interest is in chemical and environmental engineering, including water gas treatment, coupling of process, adsorption and isotherms on activated carbon, modeling and simulations for water/air treatment with POA, aerodynamics and mass and heat transfer and chemical reactions. Tuan Anh Nguyen is a Senior Principal Research Scientist at the Institute for Tropical Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam. He received a BS in physics from Hanoi University in 1992, a BS in economics from Hanoi National Economics University in 1997, and a PhD in chemistry from the Paris Diderot University, France, in 2003. He was a Visiting Scientist at Seoul National University, South Korea, in 2004, and the University of Wollongong, Australia, in 2005. He then worked as a Postdoctoral Research Associate and Research Scientist at Montana State University, United States in 2006-09. In 2012 he was appointed as the Head of the Microanalysis Department at the Institute for Tropical Technology. His research areas of interest include smart sensors, smart networks, smart hospitals, smart cities, complexiverse, and digital twins. He has edited more than 74 books for Elsevier, 12 books for CRC Press, 1 book for Springer, 1 book for RSC, and 2 books for IGI Global. He is the Editor-in-Chief of Kenkyu Journal of Nanotechnology & Nanoscience. Dr. Sami Rtimi, PhD is Scientific Advisor at the Swiss Federal Institute of Technology (EPFL). He is an expert in thin film design and preparation for self-sterilizing and self-cleaning applications. Dr. Rtimi has authored several peer-reviewed studies and reviews, book chapters, patents, and presented at several international meetings & conferences. He is an experienced editor of Elsevier books and has served as guest editor for several special journal issues in his area of expertise. Phuong Nguyen-Tri is a full professor and director of the graduate program in energies and material science at the Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières (UQTR), Québec, Canada. He is the founder of the Laboratory of Advanced Materials for Energy and Environment (Nguyen-Tri Lab) at UQTR and holds the UQTR Research Chair of Advanced Materials for Health and Security at Work. His main research interests are nanomaterials, hybrid nanoparticles, innovative coatings, polymer crystallization, polymer aging, and polymer blends and composites.

• 1. Air quality monitoring using nanosensors2. Smart nanosensors and methods for detection of nanoparticles and their potential toxicity in air3. Nanocatalyst-based advanced oxidation processes4. Nano-photocatalysis in advanced oxidation processes5. Biotechnological applications of nanomaterials for indoor air treatment 6. Air treatment by absorption on nanoparticles 7. Nanofiltration/nanostructured membranes8. Immobilization of hybrid nanoparticles in filtration membrane structures9. Membranes based on carbon nanotubes10. Antibacterial air filter using nanomaterials11. Advanced nanomaterials for the adsorption of toxic gases12. Nano- Metal Organic Frameworks (MOF) for gas adsorption13. Combined cold plasma treatment and photocatalytic nanomaterials14. Biological and physicochemical combination processes15. Biological treatment followed by physical methods (ozonation, photolysis)16. Future scope