Water Treatment Laboratory, Nagasaki University

Welcome to the website of the Water Treatment (Prof. Takahiro Fujioka's) Lab in the Water & Environmental Science Program, Graduate School of Integrated Science and Technology, Nagasaki University, Japan. The Water Treatment Lab focuses on the development of membrane-based water treatment technologies and analytical techniques to produce low-cost but high-quality drinking water and reliable recycled water for potable water reuse.

Laboratory brochure - here, Japanese language website - here 

17 September 2025
Our new article "Submerged nanofiltration for the removal of perfluoroalkyl substances, N-nitrosamines, and pharmaceuticals and personal care products " has been accepted in Separation and Purification Technology Journal.

12 August 2025
Our new article "Reverse osmosis membrane surface modification with hydrophilic amines for enhanced N-nitrosamine separation and antifouling performance" has been accepted in Separation and Purification Technology Journal.

8 July 2025
Our new article "Micro-nanobubbles for removing membrane foulants from the surface of nanofiltration membranes in drinking water applications" has been accepted in Separation and Purification Journal.

1 July 2025
Our new article "Online-monitoring Cyclotella sp. concentrations in lake water using an automated fluorescence microscopy method" has been accepted in Environmental Science: Water Research & Technology.

25 April 2025
Our new article "Pre-coagulation of surface water for mitigating membrane fouling during submerged nanofiltration" has been accepted in Desalination.

20 November 2024
MEXT scholarship program (three positions available under University's recommendation for the Water and Environment Science Program)

The Water Treatment Laboratory led by Prof. Takahiro Fujioka at the Graduate School of Integrated Science and Technology, Nagasaki University is seeking applicants for PhD program (Water and Environment Science Program) starting in October 2025. The scholarship covers all expenditures including travel, enrolment & tuition fees, and living expenses (>$1000 USD/month) for 3 years.

The applicants need to have a grade equal to or more than the B2 equivalent of the European Common Language Reference Frame (e.g., IELTS = 5.5) by mid-December. They also need to have a GPA (MEXT calculation) of 2.3 or higher. 

Interested candidates should contact Prof. Takahiro Fujioka (tfujioka＠nagasaki-u.ac.jp) along with a CV and motivation letter. Once they are selected, they will receive a full application guideline.