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Resource Chemistry Lab
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The lab studies technologies for extracting metals from ore and the environmental remediation of mines.
AboutAbout the lab
Extracting resources and remediating the mine environment.
The Resource Chemistry Lab studies mineral processing and smelting, which extract useful metals from ore, as well as the environmental remediation of mines.
Under Professor Hiroyoshi, students tackle challenges such as flotation and leaching using both experiments and machine learning models.
Under Associate Professor Arima, students investigate mine environmental remediation, focusing on acid mine drainage, and how heavy metals and other substances dissolve out.
Students also take part in environmental surveys for an international joint project in Kazakhstan and in field surveys in the Philippines.
Key terms
- Flotation
- A method that separates only the target mineral by attaching finely crushed ore particles to bubbles in water so that they float
- Leaching
- A method that extracts the target metal by soaking ore in a chemical solution or similar liquid and dissolving the metal out
- Acid mine drainage
- Acidic water that comes from mines and excavated rock and contains heavy metals and other substances
NewsLab news
A PhD student received an award at The 29th Regional Symposium on Chemical Engineering
A PhD student won a prize in the Geo-Pitch presentation at AEGC 2025
Paper published in Environmental Geochemistry and Health
Joint research started with the University of Tsukuba, Moriyama City, and others to optimize waste incineration stirring conditions using AI
ResearchResearch themes
The lab works on both mineral processing and smelting, which extract metals from ore, and solutions to the environmental problems that mines cause. In addition to experiments, it also uses approaches based on machine learning models.
*Illustrative imageMineral processing and smelting with experiments and AI
The lab tackles challenges in mineral processing and smelting, such as flotation and leaching, which extract metals from ore, using experiments and approaches based on machine learning models.
*Illustrative imageRemediating the mine environment
The lab studies mine environmental remediation, mainly for acid mine drainage, and the behavior of heavy metals and other substances as they dissolve out of, or are adsorbed onto, excavated rock (waste rock from excavation).
MembersFaculty
The members of the Resource Chemistry Lab consist of faculty and doctoral, master's, and undergraduate students.As of 2026
- ProfessorNaoki Hiroyoshi
- Associate ProfessorTakahiko Arima
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Rio tinto river CarolStoker NASA Ames Research Center” Carol Stoker, NASA / Public domain (cropped)
- Mineral processing and smelting with experiments and AI: “Gold heap leaching” see Source. / Public domain (cropped)
- Remediating the mine environment: “Tailings Dumps, Silverbrook Mine” Partonez / CC BY-SA 4.0 (cropped)
- Related lab (Circular Symbiosis Systems Lab): “Biogas Photovoltaik Wind” Florian Gerlach (Nawaro) / CC BY-SA 3.0 (cropped)
- Related lab (Geosphere Mass Transport Lab): “Clear shallow water floating debris Owalla shoreline” Jevuniverse / CC BY 4.0 (cropped)
- Related lab (Resource and Environmental Remediation Lab): “Wayne NF IMG )” Wayne National Forest / CC BY 2.0 (cropped)
- Related lab (International Resource and Environment Systems Lab): “Kushiro Coal Mine 2011” Ozizo / CC0 (cropped)
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