This is a water innovation pitch during the session "EIP Water's got talent" at the 1st EIP Water Conference on 21 November 2013. There are three applications for Integrated Photocatalytic Wastewater Treatment Systems :
1. Arsenic removal
2. Selenium removal from coal mining wastewaters
3. Pesticide degradation from diverse water bodies
1st EIP Water Conference: Integrated Photocatalytic Wastewater Treatment Systems
1. EIP Water has got talent:
Candidates pitch innovation to panel of judges
Integrated Photocatalytic
Wastewater Treatment Systems
Daniel Fernández Hevia
21 November 2013
EU Parliament, Brussels
3. ARSENIC
Bangladesh, 155M population. According
to WHO 30M will suffer arsenic poisoning.
Figures are growing…
India. Only in West Bengal, almost 75M
people are exposed to >10g/L. Those
exposed to > 50 10g/L are estimated 30M
Southeat Asia. 110M are consuming
water with [As]> 10 times the WHO limits
More than 60 countries in the world have
severe arsenic problems, mostly in Africa,
Asia, and South America
Arsenic poisoning is terrible and deadly
4. TiO2-based remediation of arsenic water
contamination
TiO2-as a
photocatalyst
Cost-efficient
immobilization
TiO2-as an
adsorbent
Incorporation
into ceramic
filters
Cost-efficient
and large-scale
photoreactors
combining
As(III)
photooxidation
and As(V)
adsorption.
Cost-efficient and large-scale photoreactors
5. LARGE SCALE PHOTOREACTORS: HOW?
Photocatalysis value chain
Photocatalyst
Nanoparticles
Coatings
Chemical composition
Processing route
Coating methodology
Crystal face orientation
In the powder
In the coating
Enhanced performance
Doping visible range
Nanostructuring highly
active facets
Phase Mixing: enhancing eh
separation
Scale-up mass production
Photoreactor system
Photoreactor design
Coated photocatalyst
Reactor geometry
UV LED Irradiation
Light attenuation
Photon efficiency.
Adding value:
Sensing (input and
output)
Automation &
control
Scale-up to industrial
mass production
Application
By substance
Emerging
contaminants
DBPs
Arsenic,
selenium
By industry
Key driver of value creation
Agriculture
Coal mining
Urban WWTPs
…
6. THE PHOTOREACTOR SYSTEM
Photoreactor design
Coated photocatalyst
UV LED Irradiation
Reactor geometry
Light attenuation
Photon efficiency
Hydraulics/fluid dynamics
Adding value:
Sensing (input and output)
Automation & control
Scale-up to industrial mass production
7. THE APPLICATIONS
Arsenic
Selenium
Where
everything
started…
Along with arsenic
Major coal mining US
company contacted.
Same concept applies
Similar solutions
Photooxidation
[As(III)As(V)] and
photoreduction
[Se(VI)Se(IV)Se(0)]
simultaneously in action!
Pesticides
Organic counterpoint
Presence detected
in Europe in surface
water, groundwaters,
WWTPs, and driking
water
Increasing concern
and regulation.
Applications
Centralized (WWTPs - large scale) or Decentralized
(POE/POU or source point) treatments
8. CONCLUSIONS
Large scale photoreactors:
UV-LED technology
immobilized photocatalyst
automation and control
Three applications:
Arsenic removal
Selenium removal from coal mining
wastewaters
Pesticide degradation from diverse water
bodies
9. THANK YOU
FOR YOUR ATTENTION
Dr. Daniel Fernández Hevia
dfernandez@proyinves.ulpgc.es
daniel.fernandez@watergy.es