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Aquatic Environment Ecological Engineering Lab
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The lab studies lake and ocean water environments through the activity of microbes and works to improve them.
AboutAbout the lab
Exploring the mechanisms of the water environment through microbes, and improving it.
To enable the sustainable use of water resources, the Water Environment Ecological Engineering Lab conducts a wide range of basic research on the water environment as well as research on improving it.
The lab investigates the mechanisms by which toxins and musty-odor compounds associated with algal blooms (aoko) are produced, and the amount of carbon taken up by microbes.
It also works on water purification technologies that use microbial activity, such as biofilm treatment, and aeration with oxygen generated by electrolysis.
On the lab's website it is introduced under the name "Utsumi Lab," and the latest news posted there is from 2020.
Key terms
- Algal bloom (aoko)
- An environmental problem in which algae multiply in large numbers and turn the surface of a lake green
- Microcystin
- A toxin produced mainly by cyanobacteria. At water sources affected by algal blooms, its contamination of drinking water becomes a problem
- Biofilm treatment
- A water purification method in which a film of microbes (a biofilm) attached to a carrier degrades toxins and other substances
- Aeration
- Supplying air or oxygen to water. It is used to keep water sources such as dams oxygenated
ResearchResearch themes
As the world's population grows, damage from water shortages and water pollution may increase. So that humanity can use limited water resources sustainably, the lab conducts both basic research on the water environment and research on improving it.
*Illustrative imageAlgal Blooms and the Production of Toxins and Musty Odors
When algal blooms (aoko) occur, toxins such as microcystin and musty-odor compounds can contaminate drinking water. The lab studies the mechanisms by which cyanobacteria and actinomycetes produce these substances, aiming to improve the water environment of water sources where pollution is severe.
*Illustrative imageThe Carbon Cycle Driven by Microbes
The lab investigates how much carbon is taken up by microbes that absorb greenhouse gases such as carbon dioxide and methane, and how much they contribute to material cycles in the atmosphere and oceans. The main study sites are Suruga Bay and the Arctic Ocean.
*Illustrative imageWater Purification by Biofilm Treatment
The lab purifies water by biofilm treatment, using the ability of microbes to degrade microcystin and musty-odor compounds. It aims to clarify the degradation process more accurately and to develop water treatment technologies that use microbial functions with high efficiency.
*Illustrative imageAeration with Electrolytic Oxygen
Air aeration, which keeps water sources such as dams oxygenated, is costly to install and maintain and cannot be introduced easily. The lab is developing a new technology that aerates with oxygen produced by the electrolysis of water, aiming for low-energy water treatment.
MembersFaculty
The members of the Water Environment Ecological Engineering Lab consist of faculty, doctoral, master's, and undergraduate students, and collaborators.As of 2020
- ProfessorMotoo Utsumi
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: “Lake water uptake” Ahom04 / CC BY-SA 4.0 (cropped)
- Algal Blooms and the Production of Toxins and Musty Odors: “Harmful Bloom in Lake Atitlán, Guatemala” Jesse Allen / Public domain (cropped)
- The Carbon Cycle Driven by Microbes: “North Pole, Arctic Ocean, sea ice 03” Matti&Keti Lorenz King, uni-giessen.de / CC BY-SA 4.0 (cropped)
- Water Purification by Biofilm Treatment: “Anazawa Purification plant, Nasushiobara, Tochigi” Kanohara (talk) / Public domain (cropped)
- Aeration with Electrolytic Oxygen: “Alkaline water electrolyser” Kavin Teenakul / CC BY-SA 4.0 (cropped)
- Related lab (Bioresource Process Engineering Lab): “Newtown Creek Wastewater Treatment Plant - digester eggs - Greenpoint, Brooklyn, New York” Netherzone / CC BY-SA 4.0 (cropped)
- Related lab (Microbial Functions and Applications Lab): “Compound Microscope Image” Ajay Kumar Chaurasiya / CC BY-SA 4.0 (cropped)
- Related lab (Bioprocess Engineering Lab): “Penicillin bioreactor” Matt Brown / CC BY 2.0 (cropped)
- Related lab (Water Resources and Environmental Engineering Lab): “Last mile irrigation- Pipe to field in Raichur, Karnataka, India” User: Vraj Acharya, WELL Labs / CC BY-SA 4.0 (cropped)
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