The Water Treatment Lab focuses on the development of membrane-based water treatment technologies and their relevant analytical techniques to produce high-quality and reliable recycled water for Non-Potable and Potable Water Reuse.

Ongoing Funded Projects

2018.4 - 2021.3        PI, Grant-in-Aid for Scientific Research (B), Kaken, JPN (New)
2017.4 - 2020.3        CI, Grant-in-Aid for Scientific Research (A), Kaken, JPN

2017.2 - 2018.3        PI, Fostering Joint International Research, Kaken, JPN

2017.2 - 2018.5        CI, Water Environment & Reuse Foundation, USA

2017.1 - 2019.2        CI, Gesuido Academic Incubation to Advanced Project (GAIA), JPN

Previous Funded Projects

2016.4 - 2018.3        PI, Grant-in-Aid for Encouragement of Young Scientists (A), Kaken, JPN
2017.1 - 2017.12      PI, Fuso Innovative Technology Foundation, JPN
2016.11 - 2017.10    PI, The Sumitomo Foundation, JPN

2016.10 - 2017.9      PI, Kurita Water and Environment Foundation, JPN

2015.8 - 2016.3        PI, Grant-in-Aid for Research Activity start-up,
Kaken, JPN

Main Research Topics

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Reverse Osmosis AND Nanofiltration Technology
- We are developing new reverse osmosis (RO) membranes with high rejection for
N-nitrosodimethylamine (NDMA).

Publication:
Water Research
Mechanisms underlying micropollutant transport through RO
- We are trying to provide further understanding of micropollutant transport through RO membranes using positron annihilation lifetime spectroscopy (PALS) and computer-based molecular dynamics (MD) simulations.

Publication: Journal of Membrane Science
 
On-line NDMA Monitoring
- We are validating an innovative analytical instrument which enables us to determine NDMA concentrations at part-par-trillion levels without pre-concentraiton but with small volume (e.g. <1 mL). A bench-top system (not online) is being validated at OCWD in CA, USA. We have also demonstrated the use of online NDMA monitoring (e.g. one data every 15 min) at the pilot scale. We have also identified NDMA rejection by RO can be a surrogate for the removal of CECs.

Publication:
Chemosphere; Environ. Sci.: Water Res. Technol.
Real-Time On-line Monitoring of bacteria
- We are evaluating real-time bacterial monitoring for assessing reverse osmosis (RO) treatment for removal of bacteria at the pilot scale.

Publication:
Environmental Science & Technology Letters
Ceramic Nanofiltration
- We are developing economical sewer mining technique using ceramic nanofiltration membranes in combination with ozone. This technology is expected to provide high quality of reclaimed water with high treatment efficiency without frequent chemical cleaning.

Publication: 
International Journal of Environmental Research and Public Health
Advanced Oxidation Process
- We are trying to develop a technology that destructs NDMA by advanced oxidation process (AOP) comprising UV and photo-catalysts.
 
Lab-scale Water Treatment System housed in the Lab

 
Low-pressure RO systems
High-pressure RO system
Mini pilot-scale RO system
Mini pilot-scale ceramic membrane system
 

 FO system
 

Ceramic NF system

Computer and software for Molecular Dynamics (MD) simulations

Pilot-scale Water Treatment Facilities in the Nagasaki University Campus


Reverse Osmosis (RO)


Membrane Bioreactor (MBR)