Development of a novel photocatalytic nano-composite membrane to - - PowerPoint PPT Presentation

• 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 F F 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
• f 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.