Puralytics is a startup company founded in 2007 that develops light-activated nanotechnology for water purification. Their technology uses LEDs or sunlight to excite a nanotechnology-coated mesh, which then kills pathogens, destroys chemicals, adsorbs heavy metals, and purifies water through 5 light-activated processes. Their products include the Shield 500 water purification system, SolarBag personal water purifier, and LilyPad system for treating stormwater runoff. Studies show the LilyPad is effective at reducing various contaminants like pharmaceuticals, pesticides, and petrochemicals in stormwater through natural sunlight.

1. 1
Mark Owen, CEO
Beaverton, OR, USA
Mark.Owen@Puralytics.com
+1 503 616-2582
www.puralytics.com
5 Star GIIRS Rating from B Labs

2. 16/01/2014 2
Pump and Treat:
Solar Catalyst Passive Treatment:

3. Beaverton, OR, USA, 2007 startup.
Light-activated (LED or Solar) nanotechnology for
water purification
 Green:
 Water and electricity reduced
 Lean:
 Low water treatment cost
 Mean:
 Destroys “emerging” contaminants
Shield 500
– world’s
first LED
water
purification
system
SolarBag –
sunlight
activated
personal
water purifier
LilyPad – sunlight activated
water catchment treatment

4. LEDs or Sunlight excite
a nanotechnology coated mesh
which:
• Kills pathogens
• Destroys chemicals
• Adsorbs heavy metals
• 5 light activated processes
1 Patent granted, 4 Patent Apps Filed, 4 Research Grants received

5. 0.0 0.2 0.4 0.6 0.8 1.0
Heavy Metals (As/Hg/Cr/Se)
Pathogens
Pyriproxyfen
Prometon
Malathion
MCPA
Mecoprop
Propyzamide
Quinmerac
Carbetamide
Diuron
Cotinine
Meth
Caffeine
Petrochems
VOCs
Pur-Blue (Standard)
Relative Reduction Rates
PesticidesDrugs

6.  LED Powered Shield
technology used in study
 Conclusions to be
included in October 2013
report
 Capability demonstrated:
the highest pesticide
reduction of all
technologies evaluated
in the study.
6

7.  LilyPad Stormwater Project
 Puralytics and Oregon State
University are studying LilyPad
performance for water catchment
applications relevant to storm water
 Schedule
 Phase 1 Summer 2013
 Quantify performance model of
LilyPad L
 Validate on trace contaminants
 Phase 2 Fall 2014
 Field trial monitoring roadside
storm water runoff treatment
 Work to be completed by the end
of the year
7

8.  Build on previous Puralytics study
 Analyze effects of natural convection/ pond dynamics
 Test on storm water contaminants
 Pesticides, Petrochemicals, Pharmaceuticals Micro-Organisms, etc.

9. 9
Compound Classification
Acetaminophen, Gemfibrozil,
Carbamazepine
Pharmaceuticals
Pyrene, Phenanthrene,
Chrysene
Polycyclic Aromatic
Hydrocarbons (PAHs)
Hexane, Benzene, Toluene,
Xylenes, Naphthalene
Total Petroleum
Hydrocarbons (TPHs)
TBD PCBs
Malathion, Pyriproxyfen,
Metaldehyde
Pesticides
Prometon Herbicides
Carbendazim, Diethofencarb Fungicides

10. 10
𝑑𝑑
𝑑𝑑
= −𝑓 𝐼 ∙ 𝑘 ∙ 𝐶 ∙
𝑦𝑦
𝑉
Variable Description
C Contaminant concentration
k Rate constant
f ( I ) Function of UVA intensity I
y Fractional surface coverage
A Surface area
V Volume

11. 11
0%
20%
40%
60%
80%
100%
0 5 10 15 20 25 30 35
PercentRemainder
[C/C0*100%]
Time [hrs]
LilyPad - Storm Water
Contaminant Performance
Caffeine
Diuron
Cotinine
Meth

12. 12
0%
20%
40%
60%
80%
100%
0 5 10 15 20 25 30 35
PercentRemainder
[C/C0*100%]
Time [hrs]
LilyPad - Storm Water Contaminant
Performance Scaling
Caffeine
Diuron
Cotinine
Meth

13. 13
Ponds here

14. Rainwater
Collection
Fertilizers
Pesticides
Shield Onsite
Treatment
LilyPad
Sunlight
Treatment in
Runoff

15.  $500 /m2 for LilyPad
 Seasonally refreshed,
regeneration possible
 1m2 for each 1LRV
contaminant reduction
in 1m3 per 1 day
 Low impact on plants
and wildlife
 No electricity, facilities,
or chemicals required
15

16. 16
Mark Owen, CEO
Beaverton, OR, USA
Mark.Owen@Puralytics.com
+1 503 616-2582
www.puralytics.com

17. 18
Many contaminants are reduced by two or more processes
Contaminant
Photocatalytic
Oxidation
Photocatalytic
Reduction
Photolysis
Photo
Adsorption
Photo
Disinfection
Dichromate 1 1 1
Arsenic 1 1
Caffeine 1 1
Cerium 1 1
Cobalt 1 1
Copper 1 1
Cryptosporidium 1 1
Estradiol 1 1
Giardia lamblia 1 1
Heterotrophic plate count 1 1
Lead 1 1
Lead dioxide 1 1
Legionella 1 1
Legionella pneumophila 1 1
Manganese Oxide 1 1
Mercury (inorganic) 1 1
Permanganate 1 1
Saccharomyces cerevisiae 1 1
Silver 1 1
Staphylococcus aureus 1 1
Streptococcus faecalis 1 1
Streptococcus sobrinus 1 1
Styrene 1 1
Sulfamethoxazole 1 1
Total Coliforms (including fecal coliform and E. Coli) 1 1
Turbidity 1 1
Viruses (enteric) 1 1
1,1,1,2-Tetrachloroethane 1
1,1,1,2-Trichloroethane 1
Puralytics Active Purification Processes