Mar. 5th, 2013
Associate Professor Division of Environmental Engineering
Faculty of Engineering Hokkaido University
Daisuke Sano, Ph.D.
Development of a novel photocatalytic nano-composite membrane to create new water resources from wastewater
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program 1
Autonomic and decentralized water metabolic system
Small facility for membrane bioreactor
Drinking water treatment plant with cutting-edge
technologies
Conventional water utilization
Drinking water pipe
Sewer duct
Intake
Wastewater effluent
Reuse Wild and farm
animals
Reuse
Reuse
Farm
Recharge
Sewer Farm
Long sewer duct
Wastewater treatment plant
Fountain water
Drinking water treatment plant
Reuse
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program
MBR flow
Waste water
Denitrification Nitrification
Treated water ●Small footprint
●Simple operation ●Simple maintenance
Advantages
Air
Conventional flow
Waste water
Sedimentation
Disinfection
NaClO
Treated water
Air Denitrification Nitrification
Membrane Bioreactor (MBR)
2
MF: microfiltration
MF
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program
NF/RO
What we have to pay attentions to are…
- Organic matter in MBR effluent - Viral pathogens and micropollutants
3
Fouling and brine generation in NF/RO
Waste water MF
Denitrification Nitrification
Treated water
Air
MF: microfiltration
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program
Hollow fiber UF membrane
NF/RO
4
Waste water Air
What we would like to achieve…
MF UF
UF: ultrafiltration
Water utilization
Photocatalysis membrane
UV-visible light source
ROS
Photocatalysis membrane
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program
Photocatalysis membrane
UV-visible light source
ROS
5
What we would like to achieve…
Degradation of micropollutants
Inactivatation of microorganisms
Prevention of biofouling
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program
Team Leader Prof. Marcos Fernandez-Garcia
ICP-CSIC
6
Main members
Team Leader Prof. Satoshi OKABE Hokkaido University
Water Treatment Engineering Environmental Microbiology
Dr. Katsuki KIMURA Hokkaido University
Water Treatment Engineering Membrane Technology
Dr. Hisashi SATOH Hokkaido University
Water Treatment Engineering Water Chemistry
Dr. Daisuke SANO Hokkaido University
Water Treatment Engineering Public Health Microbiology
Dr. Hiroshi YAMAMURA Chuo University
Water Treatment Engineering Membrane Technology
Dr. Maria Luisa Cerrada (ICP-CSIC)
Dr. Marta Fernandez-Garcia (ICP-CSIC)
JAPAN
SPAIN
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program 7
Research schedule
Equipment preparation and preliminary analyses
Topics 2012 2013 2014
Biofilm development analysis
Evaluation of depollution and disinfection capabilities
Synthesis of photoactive materials Synthesis of photocatalytic nanocomposite membranes
Characterization of photocatalytic nanocomposite membranes
Analysis of light-matter interaction in nanocomposite membranes
March 5th, 2013
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program
+
+
2,3,4,5,6-PENTAFLUORSTYRENE, 5PFS
F
FF
F
F
TITANIA-POLYMER
TITANIA
Free radical polymerization
AIBN
3-(trimethoxysilyl ) propyl methacrylate
Modification of titania (Spanish team)
8
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program 9
Synthesis of photoactive materials (Spanish team)
EVOH A1-EVOH A2-EVOH B2-EVOH S-EVOH C1600-EVOH C1700-EVOH
PP S-PP A1-PP A2-PP B1-PP B2-PP C1600-PP C1700-PP
Ethylene vinylalcohol copolymer (EVOH) films
Polypropylene (PP) films
A1-EVOH
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program 10
UV illuminator
Film
ROS detection reagent in phosphate buffer (pH: 7.2)
Quartz tube
ROS production potential of films (Japanese team)
5 cm
ROS
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program 11
Total ROS production (Japanese team)
Maximum 75%tile Median 25%tile Minimum
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program
PVDF / Sulfolan
ɸ = 150 – 200 µm Pore size = 200 – 700 nm
Preparation of membranes (Spanish team)
12
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program
PVDF-TiO2 / Sulfolan
ɸ = 350 – 400 µm Pore size = 150 – 700 nm
Preparation of membranes with titania (Spanish team)
13
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program 14
Pressure sensor
Pump A
Medium
Membrane Cross flow-type flow cell
Pump B
PE UV illuminator
Quartz glass
A continuous-flow cell (Japanese team)
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program
Team Leader Prof. Marcos Fernandez-Garcia
ICP-CSIC
15
Main members
Team Leader Prof. Satoshi OKABE Hokkaido University
Water Treatment Engineering Environmental Microbiology
Dr. Katsuki KIMURA Hokkaido University
Water Treatment Engineering Membrane Technology
Dr. Hisashi SATOH Hokkaido University
Water Treatment Engineering Water Chemistry
Dr. Daisuke SANO Hokkaido University
Water Treatment Engineering Public Health Microbiology
Dr. Hiroshi YAMAMURA Chuo University
Water Treatment Engineering Membrane Technology
Dr. Maria Luisa Cerrada (ICP-CSIC)
Dr. Marta Fernandez-Garcia (ICP-CSIC)
JAPAN
SPAIN Membrane production
Depollution, disinfection and biofilm prevention capabilities
+ Membrane production
+ titania provision
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program 16
Research schedule
Equipment preparation and preliminary analyses
Topics 2012 2013 2014
Biofilm development analysis
Evaluation of depollution and disinfection capabilities
Synthesis of photoactive materials Synthesis of photocatalytic nanocomposite membranes
Characterization of photocatalytic nanocomposite membranes
Analysis of light-matter interaction in nanocomposite membranes
March 5th, 2013
Synthesis of photocatalytic nanocomposite membranes
Sep. 2012: Spain team
visited Sapporo
Oct. 2012: Japan team visited Madrid
Mar. 5th, 2013 Daisuke Sano
Strategic Japanese-Spanish Cooperative Program
Summary and future perspectives
17
- Photocatalysis capability of prototype films was tested. - Prototype membranes are being produced by both sides
of Japan and Spain teams. - Flow cell type reactor for analyzing biofilm prevention,
chemical decomposition and virucidal capabilities of photocatalytic nano-composite membrane was constructed.
- Biofilm formation, chemical decomposition and virucidal
capabilities of photocatalytic nano-composite membrane will be tested using real wastewater.
