Dr. Kaizar Hossain, an ardent and dynamic personality, completed his Bachelor of Science (B.Sc) in Environment and Water Management from Burdwan University, West Bengal and Master of Science (M.Sc) in Environmental Studies from Andhra University, Andhra Pradesh. He is a doctorate with his Ph.D in Environmental Sciences from GITAM University collaboration with ILU-6, RTDD/BARC/ DAE, Mumbai, and has awarded as Post-Doctoral Fellow by USM- TWAS Italy. Dr. Kaizar's expertise in pollution mitigation, waste management, and advanced bioremediation technologies has positioned him as a pioneer in crafting innovative solutions to the world’s most critical environmental challenges. He has numerous publications in globally renowned Q1 journals. One of his core research focuses is bioremediation technology for wastewater treatment—a method that uses biological agents such as bacteria, algae, fungi, and plants to remove contaminants from wastewater. Dr. Kaizar is also at the forefront of exploring nanotechnology applications for pollution mitigation, pioneering sustainable technologies that are both effective and accessible for diverse global contexts. Dr. Kaizar's academic achievements and impactful contributions earned him a prestigious appointment as an Editorial Board Member of Scientific Reports, Nature Portfolio in 2024. In this capacity, he plays a vital role in guiding and promoting cutting-edge research that aligns with the United Nations’ Sustainable Development Goals, particularly SDG 6: Clean Water and Sanitation. Beyond his research, Dr. Kaizar is a strong advocate for global collaboration in addressing environmental issues. His participation as a Guest Editor for Scientific Reports' special issue on “Bioremediation and Biotreatment of wastewater” underscores his dedication to fostering innovation and practical solutions for wastewater management, a critical area in the fight against water pollution and water scarcity. Dr. Kaizar’s contributions reflect his unwavering commitment to environmental sustainability and highlight the importance of integrating advanced science with practical applications to create a cleaner, healthier world for future generations. He was the Member of International Steering Committee of 2nd 3rd & 4th International Conference on Sustainable Development, ICSD-2014, 2015, 2016, 2017, 2018, 2019 Rome, Italy. He is National Panel of Expert of Engineers Without Borders (EWB) – India and Life member of National Association for Application of Radio-isotopes and Radiation in Industry (NAARRI) Mumbai.