Puralytics® activated TiO2 Nanotechnology (sunlight-only) for Photocatalytics Treatment of Polluted...
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Transcript of Puralytics® activated TiO2 Nanotechnology (sunlight-only) for Photocatalytics Treatment of Polluted...
1
Mark Owen, CEO Beaverton, OR, USA
+1 503 616-2582 www.puralytics.com
5 Star GIIRS Rating from B Labs
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
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
0.0 0.2 0.4 0.6 0.8 1.0
Heavy Metals (As/Hg/Cr/Se)
Pathogens
PyriproxyfenPrometonMalathion
MCPAMecoprop
PropyzamideQuinmerac
CarbetamideDiuron
CotinineMeth
Caffeine
PetrochemsVOCs
Pur-Blue (Standard)
Relative Reduction Rates
Pest
icid
es
Dru
gs
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
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
Build on previous Puralytics study
Analyze effects of natural convection/ pond dynamics
Test on storm water contaminants Pesticides, Petrochemicals, Pharmaceuticals Micro-Organisms, etc.
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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
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𝑑𝑑𝑑𝑑
= −𝑓 𝐼 ∙ 𝑘 ∙ 𝑑 ∙𝑦𝑦𝑉
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
0%
20%
40%
60%
80%
100%
0 5 10 15 20 25 30 35
Perc
ent R
emai
nder
[C
/C0*
100%
]
Time [hrs]
LilyPad - Storm Water Contaminant Performance
CaffeineDiuronCotinineMeth
12
0%
20%
40%
60%
80%
100%
0 5 10 15 20 25 30 35
Perc
ent R
emai
nder
[C
/C0*
100%
]
Time [hrs]
LilyPad - Storm Water Contaminant Performance Scaling
CaffeineDiuronCotinineMeth
Rainwater Collection
Fertilizers Pesticides
Shield Onsite Treatment
LilyPad Sunlight
Treatment in Runoff
$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
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18 Many contaminants are reduced by two or more processes
Contaminant Photocatalytic Oxidation
Photocatalytic Reduction Photolysis Photo
AdsorptionPhoto
DisinfectionDichromate 1 1 1Arsenic 1 1Caffeine 1 1Cerium 1 1Cobalt 1 1Copper 1 1Cryptosporidium 1 1Estradiol 1 1Giardia lamblia 1 1Heterotrophic plate count 1 1Lead 1 1Lead dioxide 1 1Legionella 1 1Legionella pneumophila 1 1Manganese Oxide 1 1Mercury (inorganic) 1 1Permanganate 1 1Saccharomyces cerevisiae 1 1Silver 1 1Staphylococcus aureus 1 1Streptococcus faecalis 1 1Streptococcus sobrinus 1 1Styrene 1 1Sulfamethoxazole 1 1Total Coliforms (including fecal coliform and E. Coli) 1 1Turbidity 1 1Viruses (enteric) 1 11,1,1,2-Tetrachloroethane 11,1,1,2-Trichloroethane 1
Puralytics Active Purification Processes