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Kumakiri Lab
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A lab that sieves molecules with membranes to tackle environmental and energy challenges.
AboutAbout the lab
Tackling environmental challenges with membranes.
The Kumakiri Lab studies thin films with ultrafine pores that sort molecules by size.
Building on making membranes and testing their performance, the lab explores integrated reaction–separation technologies that combine membranes with catalytic reactions and fermentation.
Its work also extends to synthesizing membranes from biomass-derived materials, water treatment, CO2 separation and utilization, and bioethanol production.
Working with overseas research institutions, the lab aims to create highly efficient processes that solve environmental and energy challenges.
Key terms
- Zeolite
- An inorganic crystal with regularly arranged pores about the same size as gas molecules
- Molecular sieve membrane
- A thin membrane that uses differences in pore size to select which molecules pass through and which do not
- Fermentation
- The conversion of raw materials into other substances through the action of microorganisms
ResearchResearch themes
The lab's work is built on making thin films with pores the same size as molecules and testing their performance. By combining membranes with catalytic reactions and fermentation, it aims to create highly efficient processes that help solve environmental and energy challenges.
*Illustrative imageDeveloping Molecular Sieve Membranes
Zeolites, which are inorganic crystals, have pores the same size as gas molecules arranged in a regular pattern. Made into a thin film, they become molecular sieve membranes that sort molecules by pore size. Carbon materials can also form similarly fine pores, so the lab changes and combines materials to broaden the selectivity and functions of the membranes.
*Illustrative imageCombining Membranes with Catalysis and Fermentation
Combining membranes with other technologies can create synergistic effects and may lead to simpler, more compact systems. The lab examines which combinations are effective, develops the technologies they require, and verifies their performance.
*Illustrative imageUnraveling the Mysteries of Nanopores
The lab investigates how molecular-sized nanopores form and which pathways molecules take through a membrane. In addition to evaluating physical properties, it visualizes molecular motion through simulation to clarify the permeation mechanism. This feeds into the design of membranes that separate molecules well and let the target molecules pass through readily.
MembersFaculty
- ProfessorIzumi Kumakiri
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: “Mebrane Fibres” Gert Swinner / CC BY 2.5 pl (cropped)
- Developing Molecular Sieve Membranes: “Framework structure of the FAU-type zeolite” Nao1958 / CC0 (cropped)
- Combining Membranes with Catalysis and Fermentation: “Membrane bioreactor (MBR) ( )” SuSanA Secretariat / CC BY 2.0 (cropped)
- Unraveling the Mysteries of Nanopores: “Zeolite-ZSM-5-vdW” Thomas Splettstoesser (www.scistyle.com) / CC BY-SA 4.0 (cropped)
- Related lab (Umetsu Lab): “Antibody IgG1 surface” Tokenzero / CC BY-SA 4.0 (cropped)
- Related lab (Hattori Lab): “Calixarene” Edgar181 / Public domain (cropped)
- Related lab (Kubo Lab): “Ferrofluid in magnetic field” Steve Jurvetson / CC BY 2.0 (cropped)
- Related lab (Homma Lab): “Lithium-Ion Cell cylindric” RudolfSimon / CC BY-SA 3.0 (cropped)
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