Uma Shanker, PhD, is Associate Professor in the Department of Chemistry at Dr B R Ambedkar National Institute of Technology Jalandhar, Punjab, India. His research focused on the green synthesis of various types of nanomaterials and explored their applications in environmental remediation. The main area of research of Dr Shanker and his group is environmental nanotechnology, green chemistry and environmental analytical chemistry. Dr Shanker is the author of more than 50 research articles in high-impact journals of international repute, published by Elsevier, The Royal Society of Chemistry, Springer, John Wiley & Sons, Taylor & Francis, etc. and many book chapters (more than 10) in books published by Springer and Elsevier. Dr Shanker has participated in several national and international conferences and has delivered impressive lectures. The research group of Dr Shanker have won many best paper awards during international and national conferences conducted in India and abroad. Dr Shanker has successfully completed many externally sponsored research projects from IUAC, New Delhi and World Bank. Manviri Rani, PhD, is Assistant Professor in the Department of Chemistry at Malaviya National Institute of Technology Jaipur in Rajasthan, India. Dr Rani completed her PhD at the Indian Institute of Technology Roorkee, India. She also has post-doctorate exposure from the Korea Institute of Ocean Science and Technology in South Korea for a period of more than two years. Her research focused on environmental nanotechnology, green chemistry and environmental analytical chemistry. Dr Rani is an expert in analytical method developments for various persistent organic pollutants. Enormous work has been done in the area of determination of organic pollutants from plastics, soil and sediments samples. Dr Rani is the author of more than 50 research articles and many book chapters (10) in high-impact journals of international repute, published by the American Chemical Society, Elsevier, The Royal Society of Chemistry, Springer, John Wiley & Sons, and CRC Press. Dr Rani has participated in and delivered talks at several national and international conferences.