Padmanaban Velayudhaperumal Chellam Editor

Eric van Hullebusch received his PhD in Aquatic Chemistry and Microbiology from the Université de Limoges, France, in 2002. Following his PhD, he was awarded a prestigious Marie Curie Postdoctoral Fellowship at Wageningen University, the Netherlands. He later held the position of Chair Professor of Environmental Science and Technology at the IHE Delft Institute for Water Education. He currently serves as professor of Biogeochemistry of Engineered Ecosystems at both Université Paris Cité and the Institut de Physique du Globe de Paris. His research focuses on the biogeochemistry of organic and inorganic contaminants in engineered ecosystems. He has authored over 300 peer-reviewed publications, accumulating more than 22,000 citations, with a h-index of 75. Professor van Hullebusch's current work centers on the use of biohydrometallurgical approaches for recovering technology-critical elements from waste streams and the (bio)remediation of polluted soils, with a particular emphasis on poly- and perfluoroalkyl substances (PFAS).

Padmanaban Velayudhaperumal Chellam is an assistant professor in the Department of Bioengineering at the National Institute of Technology (NIT) Agartala, India. He obtained his PhD in Technology from Anna University, Chennai, and was a recipient of the prestigious Young Scientist Research Award from the Board of Nuclear Sciences, Bhabha Atomic Research Centre (BRNS - BARC), Government of India, Mumbai. Dr. Chellam has led and contributed to several nationally funded research projects supported by agencies including the Department of Science and Technology (DST), Department of Biotechnology (DBT), Ministry of Earth Sciences, Biotechnology Industry Research Assistance Council (BIRAC), and the BARC. He has authored over 75 peer-reviewed publications, with a h-index of 25. His current research focuses on antimicrobial resistance in aquatic environments, resource recovery from waste streams, circular economy approaches, and sustainable bioprocess development.

Sagarika Panigrahi is an assistant professor in the Department of Civil Engineering at the National Institute of Technology (NIT) Agartala, India, specializing in environmental engineering with a focus on waste-to-energy technologies, anaerobic digestion, and sustainability assessment. She completed her PhD from the Indian Institute of Technology Kharagpur (IIT KGP), where her research centered on developing innovative pretreatment strategies to enhance biogas production from lignocellulosic biomass, and holds an MTech from the Indian Institute of Technology Guwahati. With postdoctoral experience at Aarhus University, Denmark, and IIT KGP, she has established a strong research profile, publishing extensively in high-impact journals and contributing to projects on biomethanation and carbon utilization. Dr. Panigrahi has received several accolades, including the Young Women Researcher Award (2023), and actively contributes to research, particularly in the field of waste-to-energy.