Dr. Vinay Kumar completed his Ph.D. in Biotechnology from the School of Biotechnology, Jawaharlal Nehru University, New Delhi, India. He has received prestigious awards including CSIR-JRF, DBT-JRF, CSIR-NET, GATE, and ICAR-NET. In addition, he completed a research grant from SERB as Principal Investigator at IIT Roorkee. He worked in various countries as a postdoctoral fellow. He has more than twelve years of research experience working on environmental engineering, nanobiotechnology and nanotoxicology. He has published several outstanding research papers in prestigious journals. Moreover, he has research collaboration with prominent scientists from Finland, Mexico, Malaysia, Thailand, China, Switzerland, Chile, Brazil, Ireland, Greece, etc. Currently, he is working as Professor at the Department of Community Medicine, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences, Chennai, India. Dr. Kleopatra Tsatsaragkou is a Chemical Engineer who graduated from the National Technical University of Athens. She holds a Ph.D. in Food Engineering Lab at Agricultural University of Athens, focused on Physical Properties of Foods. She has worked as a Research Engineer at the Department of Food and Nutritional Sciences at the University of Reading. Currently, she works as a Chemical Engineer at the Oil and Gas Industry. Dr. Nilofar Asim obtained her BSc in Applied Chemistry (1995) and MSc in Inorganic Chemistry (1999) from Tehran University, and her Ph.D. in Materials Science (2008) from the National University of Malaysia. She is presently working as an Associate Professor at the Solar Energy Research Institute, a center of excellence for the research and development of solar energy technology, National University of Malaysia (UKM). She has been involved in the field of materials science for more than 24 years. Her main research interests fall into the fields of circular economy, especially in the areas of recycling and sustainable manufacturing including the development of new products, new fabrication routes, and enhancement of existing products. She is experienced in the valorisation of different agricultural and industrial waste materials for fabrication of value-added materials with various applications such as adsorbents for decontamination and desiccant materials, the synthesis of various metal oxides and metal oxide nanocomposites to be utilized in solar cells, renewable system technologies, catalysts, and depollution as well as Design & synthesis of functional geopolymers for cooling systems as well as depollution. As a material scientist, her focus expands to set on the synthesis of various types of functional, advanced, and environmentally sustainable materials from varieties of resources for different applications. Considering various environmental issues, her focus was on applying the green chemistry concept to overcome these issues as much as possible by utilizing various agricultural and industrial wastes as resource materials. She has published more than 120 research papers in journals, conferences, and book chapters.