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Nakamura Lab
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The lab studies filtration and separation technologies that use membranes.
AboutAbout the lab
Separating water and other substances with membranes.
Nakamura Lab studies membrane-based filtration and separation technologies from the perspectives of separation engineering and environmental chemical engineering.
For membrane bioreactors (MBRs) used in water treatment, the lab is developing methods to monitor membrane clogging (fouling) through filtration resistance and zeta potential.
Through international joint research with India, the lab also works on developing wastewater treatment technologies needed in developing countries.
The source page is the university's researcher directory, and this introduction is based on the research achievements and other information listed there.
Key terms
- Membrane bioreactor (MBR)
- A treatment system that combines a tank where microorganisms treat water with a filtration membrane
- Fouling
- A phenomenon in which dirt accumulates on the surface or in the pores of a membrane, making filtration difficult; membrane clogging
- Zeta potential
- A value that expresses the electrical properties of the surface of a membrane or particle; it is related to filtration behavior
- Anti-solvent crystallization
- A method of adding another liquid in which the substance dissolves poorly (an anti-solvent) to recover the dissolved substance as crystals
NewsLab news
A paper on producing hydrogen from molasses was published in the International Journal of Hydrogen Energy
A paper on clogging of alumina membranes was published in the Journal of Chemical Engineering of Japan
A student received a Presentation Award at ICSST23 of the Society of Separation Technology (Japan)
ResearchResearch themes
Centered on filtration and membrane separation, the lab studies water treatment and hydrogen production processes from the perspectives of measurement and control. Its topics include monitoring membrane clogging, wastewater treatment, hydrogen fermentation, and operations for recovering crystals.
*Illustrative imageTechnology for monitoring membrane clogging
The lab is creating indicators to examine the state of membrane clogging (fouling) during operation in membrane bioreactors (MBRs). It uses the fact that filtration resistance and zeta potential differ between the filtration direction and the backwashing direction (flowing in reverse to clean the membrane).
*Illustrative imageWastewater treatment technology for India
Through joint research with India, the lab is developing decentralized, self-sustaining wastewater treatment technologies needed in developing countries. This basic research incorporates a new oxygen dissolution device into a septic tank and manages operation with an AI algorithm.
*Illustrative imageProducing hydrogen from molasses
The lab studies producing hydrogen from molasses using a forward osmosis membrane in a membrane bioreactor. The university has also filed a patent application for a hydrogen fermentation method that produces hydrogen while suppressing the drop in pH caused by lactic acid formation.
*Illustrative imageAnti-solvent crystallization and solubility equilibrium
This research measures how much the isomers of nadic anhydride dissolve in solvents and applies the results to anti-solvent crystallization.
MembersFaculty
- Associate ProfessorKazuho Nakamura
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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: “Reverse osmosis desalination plant” James Grellier / CC BY-SA 3.0 (cropped)
- Technology for monitoring membrane clogging: “Ceramic membrane (crossflow filtration)” Wikiwayman (talk) / CC BY-SA 3.0 (cropped)
- Wastewater treatment technology for India: “Aeration tank activated sludge process STP Bengaluru India” Vraj Acharya, WELL Labs / CC BY-SA 4.0 (cropped)
- Producing hydrogen from molasses: “Blackstrapmolasses” Badagnani / CC BY 3.0 (cropped)
- Anti-solvent crystallization and solubility equilibrium: “Кристалізація солі на дні солоного озера в Криму” Helen Owl / CC0 (cropped)
- Related lab (Kanai Lab): “Colloid” KarlGaff / CC BY 4.0 (cropped)
- Related lab (Physical Organic Chemistry and Molecular Design Lab): “Chlorophacinone-3D-molecular-model-engraved-render-CAS” MolGod Scientific / CC BY-SA 4.0 (cropped)
- Related lab (Shibutani Lab): “US Navy 091014-N-3038W-676 The aviation intermediate maintenance department jet shop performs a jet engine test cell on a F404-GE-400 jet engine for a F-A-18C” U.S. Navy photo by Mass Communication Specialist 3rd Class John Phillip Wagner Jr. / Public domain (cropped)
- Related lab (Oka Lab): “TunnelFire -TomStoryPIO” Coconino NF Photography / Public domain (cropped)
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