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Tokoro-Takaya Lab
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The lab works on recycling and environmental remediation, aiming for a society in which resources circulate.
AboutAbout the lab
Toward a truly sustainable, resource-circulating society
The Tokoro-Takaya Lab researches mineral processing, resource recycling, and environmental remediation technologies.
Its goal is to create a truly sustainable, resource-circulating society.
The lab works on recycling lithium-ion batteries and solar panels, and on separating iron ore for hydrogen-based ironmaking.
Its research themes also include fixing CO2 using waste ore and treating wastewater containing toxic elements.
Key terms
- Mineral processing
- Technology for crushing mined ore and separating it into useful minerals and everything else.
- Hydrogen-based ironmaking
- An ironmaking method that uses hydrogen instead of coal to extract iron from iron ore.
- Mine drainage
- Water that comes out of mines. It can contain dissolved toxic metals and other substances, so it needs to be treated.
NewsLab news
A master's student received the Excellent Poster Award at the Academic Lecture Meeting of the Society of Environmental Resources Engineering
A master's student received the Encouragement Award at the Student Poster Session of the Iron and Steel Institute of Japan
Professor Tokoro and Associate Professor Takaya received the Paper Award from the Mining and Materials Processing Institute of Japan
A master's student received an award at an international symposium on resource recycling technology in East Asia
A master's student received the Young Researcher Poster Presentation Award at Resources and Materials 2024
ResearchResearch themes
The lab aims to create a truly sustainable, resource-circulating society. Its research is built on four pillars: resource circulation technology, mineral processing, carbon-neutral technology, and environmental remediation.
*Illustrative imageRecycling Batteries and Solar Panels
The lab works on resource circulation technology for lithium-ion batteries and on optimizing the recycling process for solar panels. Using new separation technologies, it aims to create a loop in which battery materials are returned to batteries.
*Illustrative imageMineral Processing for Hydrogen-Based Ironmaking
The lab is advancing mineral processing technology to help make hydrogen-based ironmaking a reality. By refining crushing methods, it is developing a new technology that precisely separates iron ore containing a mix of various minerals.
*Illustrative imageFixing CO2 with Waste Ore
The lab studies technology that fixes CO2 using waste ore (waste rock) produced at mines, as well as technology for storing CO2 underground. It also investigates, through experiments, how fast CO2 is fixed.
*Illustrative imageWastewater Treatment Technology and Modeling
The lab studies methods for removing toxic elements from wastewater and models the reactions involved. It predicts how the treatment of mine drainage will proceed and considers suitable treatment systems.
MembersFaculty
The Tokoro-Takaya Lab consists of faculty, project researchers and researchers, technical staff, experimental assistants, secretaries, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorChiharu Tokoro
- Associate ProfessorYutaro TakayaPublications ↗
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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: “Froth flotation” Andreslan / Public domain (cropped)
- Recycling Batteries and Solar Panels: “Lithium-Ion Cell cylindric” RudolfSimon / CC BY-SA 3.0 (cropped)
- Mineral Processing for Hydrogen-Based Ironmaking: “Hematite-rich iron ore (Precambrian; Pioneer Mine, Ely, Minnesota, USA) 1” James St. John / CC BY 2.0 (cropped)
- Fixing CO2 with Waste Ore: “Shinarump Mine Waste Rock 2” Foreade / CC BY-SA 4.0 (cropped)
- Wastewater Treatment Technology and Modeling: “Iron hydroxide precipitate in stream” D. Hardesty, USGS Columbia Environmental Research Center / Public domain (cropped)
- Related lab (Dodbiba Lab): “Prominenthill-flotation” Geomartin / CC BY-SA 4.0 (cropped)
- Related lab (Tsuji Lab): “Full moon partially obscured by atmosphere” NASA / Public domain (cropped)
- Related lab (Konno Lab): “Burning methane hydrate” USGS / Public domain (cropped)
- Related lab (Saito Lab): “Onkalo driving tunnel” kallerna / CC BY-SA 4.0 (cropped)
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