Dr. KO Jae Hac is a distinguished scholar specializing in solid waste management and resource recovery from used materials, with a particular focus on biomass utilization. Currently serving as an associate professor at Jeju National University, Dr. KO has made significant contributions to the field through both research and teaching. With an extensive publication record, Dr. KO’s work encompasses topics such as biochar production and beneficial utilization, and municipal solid waste management. Their research has been widely recognized, accumulating over 1,600 citations, and achieving an h-index of 26 and an i10-index of 38, reflecting the impact and relevance of their scholarly contributions. Dr. KO has collaborated with researchers globally, fostering interdisciplinary approaches to address complex challenges in municipal solid waste management. Their commitment to advancing knowledge is evident in their active participation in academic conferences, peer-reviewed publications, and mentorship of emerging scholars.