Dr. Pankaj Sen is an Associate Professor of Chemistry and Assistant Dean, School of Basic and Applied Sciences at Sangam University. He holds a Ph.D. in water and wastewater treatment with specialization in fluoride removal and green nanotechnology. With 19 years of teaching and research experience in Organic Chemistry, he has published over 15 research papers and holds 13 national and international patents. His expertise includes water quality analysis, green synthesis of metal nanoparticles, and environmental remediation. A life member of the Indian Science Congress and Indian Water Works Association, he actively contributes to academic innovation and research supervision.