Subrata Hait, Associate Professor, Indian Institute of Technology Patna, India Subrata Hait, PhD is an Associate Professor in the Department of Civil and Environmental Engineering at Indian Institute of Technology (IIT) Patna, Bihar, India. His current research interests include waste treatment and resource recovery, solid and hazardous waste management, composting and vermicomposting of organic waste, e-waste management. He has authored many papers at his credit in various international journals in addition to several book chapters. Apart from serving as a reviewer for different international journals published by the leading publishers including Elsevier, Dr. Hait is serving as an Academic Editor of PLOS One and an Editorial Board Member of SN Applied Sciences. Dr. Chaudhery Mustansar Hussain, PhD, is an Adjunct Professor and Director of Laboratories in the Department of Chemistry & Environmental Sciences at the New Jersey Institute of Technology (NJIT), Newark, New Jersey, United States. His research is focused on the applications of nanotechnology and advanced materials, environmental management, analytical chemistry, and other various industries. Dr. Hussain is the author of numerous papers in peer-reviewed journals as well as a prolific author and editor of around One hundred and fifty (150) books, including scientific monographs and handbooks in his research areas. He has published with ELSEVIER, American Chemical Society, Royal Society of Chemistry, John Wiley & Sons, CRC Press, and Springer.