Ajay S. Kalamdhad is working as professor at the Department of Civil Engineering, Indian Institute of Technology Guwahati, Assam, India. He obtained his Bachelors, Masters and PhD in Civil and Environmental Engineering from GEC Jabalpur, VNIT Nagpur and IIT Roorkee respectively. Prior to joining IIT Guwahati in 2009, he was an Assistant Professor at VNIT Nagpur and worked in various projects at RRL, Bhopal (Now AMPRI, Bhopal) and NEERI, Nagpur. His research team is working on solid waste management by microbial and vermicomposting, aerobic and anaerobic digestion of kitchen waste and industrial sludge for biogas production, Composting of water hyacinth using different composting technologies. He also serves as an editorial board member/reviewer for several national/international journals of repute. Currently, Prof Kalamdhad supervising 18 PhD and 11 M Tech students and more than 10 PhD and 35 M Tech dissertations have been completed under his supervision. In addition, Prof. Kalamdhad has handled 9 major R&D projects funded by various agencies. He has published more than 150 research papers in national and international journals of repute. He also has published 6 book chapters and 5 international books. He is a life member of Indian Public Health Engineers, Asia-Pacific Chemical, Biological& Environmental Engineering Society, National Solid Waste Association of India, International Solid Waste Association, and Indian Water Works Association.