Surajbhan Sevda obtained a PhD in Biochemical Engineering & Biotechnology in 2013 from Indian Institute of Technology Delhi, New Delhi, India. He is currently an Assistant Professor at the Department of Biotechnology, National Institute of Technology, Warangal, India. Prior to this, he was a technical officer (research scientist) at IIT Guwahati, India. He has published more than 28 articles in scientific journals and book chapters. He received his Bachelor of Engineering in Biotechnology and Master of Technology in fermentation technology from University of Rajasthan and Institute of Chemical Technology (formerly UDCT), University of Mumbai, India, in 2006 and 2008, respectively. He was a visiting scientist at University of Calgary, Canada, in 2018. His research experience lies in industrial wastewater treatment, biofuels, and bioenergy, life cycle analysis (LCA), metal recovery, biosensor development, green chemistry, and microbial electrosynthesis. Anoop Singh obtained a PhD in Botany in 2004. He is currently a Scientist at the Department of Scientific and Industrial Research (DSIR), Ministry of Science and Technology, Government of India. Before joining DSIR, he worked at DTU, Denmark; UCC, Ireland; TERI, New Delhi, India; IARI, New Delhi, India; BHU, Varanasi, India; and VBSPU, Jaunpur, India. He has more than fifty articles in scientific journals, has published five books, including two with Springer. He is a member of several scientific communities. His research interests are sustainable agriculture, the utilization of industrial, agricultural and household waste for eco-friendly energy production, and life cycle assessment.