講演情報
[1101]Reimagining Philippine Mining: From Socio-environmental Challenges to Circular Opportunities
○CARLITO BALTAZAR TABELIN1, Einstine Opiso2, Mylah Villacorte-Tabelin1, Vannie Joy Resabal1, Dennis Alonzo3, Dayle Daño4, Theerayut Phengsaart5, Ilhwan Park4, Takahiko Arima4, Mayumi Ito4, Naoki Hiroyoshi4, Toshifumi Igarashi4 (1. Mindanao State University - Iligan Institute of Technology, 2. Central Mindanao University, 3. The University of New South Wales, 4. Hokkaido University, 5. Chulalongkorn University)
司会： パク イルファン（北海道大学）
キーワード：
Mining、Critical Minerals、Circular Economy、Environment、Sustainable waste management
The Philippines is one of the most mineralized countries in the world, hosting ore bodies of gold, copper, nickel, silver, and zinc. Its untapped mineral resources are estimated to be worth over US$1 trillion. For copper alone, the country has at least 30 undeveloped porphyry copper deposits containing precious and critical metals, including gold, silver, and molybdenum. One example is the Tampakan ore body in southern Mindanao, which is among the largest porphyry copper resources in the world, containing approximately 2,500 million tonnes of ore with grades of 0.48% copper and 0.2 g/t gold.Despite this mineral wealth, environmental pollution and community acceptance remain two of the most pressing challenges facing the Philippine mining sector. In the past, many mining companies abandoned mine sites after closure without implementing rehabilitation programs. According to the Mines and Geosciences Bureau, there are at least 11 abandoned or legacy mines in the country; however, this number excludes informal and small-scale mining operations, which are widespread across the Philippines. In addition, the sector continues to experience low public acceptance due to mining-related accidents, such as tailings storage facility collapses and failures, as well as the generation of contaminated effluents, including acid mine drainage.To address these complex issues, the Philippine government, through the Department of Science and Technology and in collaboration with local universities and mining companies, is actively developing practical solutions grounded in circular economy principles and interdisciplinary research. In this paper, we introduce several of our research projects that respond to these challenges, including community-driven and nature-based solutions for mine rehabilitation, the recycling and repurposing of mine wastes, and the recovery of copper from acid mine drainage using bimetallic magnetic materials.