Dr. T. M. Mohamed Usman is an Assistant Professor of Civil Engineering at PET Engineering College, Anna University, Tamil Nadu, with more than ten years of academic and research experience. His expertise is in environmental engineering, particularly waste activated sludge management and biohydrogen production. His doctoral research, “Effect of Two-Phase Disintegration on Waste Activated Biosolid for Cost-Effective Biohydrogen Production,” investigated chemical oxidants and microwave pretreatments to enhance extracellular polymeric substances disruption, solubilization, and fermentative hydrogen yields. He has published several research articles in peer-reviewed international journals, including Q1 and Q2 outlets, and has presented his findings at national and international conferences. His work has been recognized with awards such as an international best poster award. He actively contributes as a reviewer for leading journals in the fields of bioenergy and environmental engineering. Through his publications, Dr. Usman has advanced knowledge on sludge pretreatment mechanisms, solubilization kinetics, energy analysis, and process optimization for biohydrogen recovery. His research strengthens the scientific understanding of low-cost, sustainable approaches for resource recovery from wastewater, aligning with global efforts toward clean energy and environmental sustainability.