1. Department of Applied Chemistry for Environment School of Science and Technology, Kwansei Gakuin University Sanda Japan
2. Division of Sustainable Resource Engineering, Faculty of Engineering Hokkaido University Sapporo Japan
3. Department of Geological Engineering Hasanuddin University Makassar Indonesia
4. Institute for Geo‐Resources and Environment National Institute of Advanced Industrial Science and Technology Tsukuba Japan
5. Department of Mining Engineering Hasanuddin University Makassar Indonesia