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Nunoura Lab
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The lab researches technologies that render waste harmless and convert it into resources and energy.
AboutAbout the lab
With “waste” as the keyword
The Nunoura Lab conducts research on waste treatment technologies, with “waste” as its keyword.
The lab develops technologies that render chemically hazardous waste harmless and technologies that generate resources and energy from waste, and also evaluates their environmental safety.
Recently, it has been working on the decomposition and fuel gasification of hazardous waste using high-temperature, high-pressure water, and on converting lignin, a component of plants, into useful chemicals.
Graduate students with a variety of backgrounds are enrolled and conduct research together.
Key terms
- Environmental safety
- Not only that the treatment process itself is safe, but also that the process does not harm the environment
- Lignin
- One of the components that make up trees and grasses. It contains many structures similar in shape to benzene
- Supercritical carbon dioxide
- Carbon dioxide subjected to high temperature and pressure, giving it properties intermediate between those of a gas and a liquid
NewsLab news
Won a Poster Award at SUPERGREEN 2026
A master's student won The Excellent Poster Presentation Award at the 36th Annual Conference of the Japan Society of Material Cycles and Waste Management
A doctoral student won a Student Award at the 56th Autumn Meeting of the Society of Chemical Engineers, Japan
A doctoral student won the ISSF-ISHA 2025 Best Oral Presentation Award
ResearchResearch themes
The lab develops treatment technologies that render chemically hazardous waste harmless and conversion technologies that produce resources and energy from waste, and evaluates the environmental safety of these technologies. Recently, it has been working on the oxidative decomposition and fuel gasification of hazardous waste using high-temperature, high-pressure water; the conversion of lignin into chemicals; toxicity assessment of treated water using tests with living organisms; and the synthesis of nanomaterials using supercritical fluids.
*Illustrative imageProducing Chemicals from Lignin
The lab studies an environmentally friendly chemical conversion that turns lignin, a component of wood, into benzene and other chemicals (BTX) used as raw materials for resins. Using model compounds, it investigates how, and how fast, the reaction that cleaves molecular bonds with hydrogen (hydrogenolysis) proceeds.
*Illustrative imageMaking Nanosheets with Supercritical CO2
This research uses supercritical carbon dioxide to exfoliate layers of molybdenum disulfide, converting it into a structure expected to serve as a photocatalyst capable of decomposing hard-to-degrade substances. The lab has found that the ratio of the two structures can be controlled by temperature and pressure.
MembersFaculty
The Nunoura Lab's members consist of faculty, JSPS Research Fellows, doctoral and master's students, and research students.As of 2026
- ProfessorTeppei NunouraPublications ↗
- Assistant ProfessorOsamu SawaiPublications ↗
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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: “Blue Grass Chemical Agent-Destruction Pilot Plant Supercritical Water Oxidation Processing Building ( )” PEO ACWA / CC BY 2.0 (cropped)
- Producing Chemicals from Lignin: “Lignin aus Buchenholz” Krimimiminalkommissar / CC BY-SA 4.0 (cropped)
- Making Nanosheets with Supercritical CO2: “Sample of MoS2” Leiem / CC BY-SA 4.0 (cropped)
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