remediating pollution with photocatalytic pavements · the use of titanium dioxide (tio 2) as a...

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Remediating Pollution

with

Photocatalytic Pavements

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Air Pollution: Natural Causes

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Air Pollution: Man-Made Causes

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The Back Story on Air Pollution

• Over 90% of transportation fuel is petroleumbased.

• 50% of fuel combustion emissions are NitrogenOxides (NOx).

• NOx is the primary cause of visual air pollutionand acid rain.

Source: EPA

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Understanding Nitrogen Oxides

NOx includes Nitric Oxides (NO) and Nitrogen Dioxides

(NO2) – with NO2 being particularly dangerous due toits:

• Adverse effects on human respiratory systems

• Role as a precursor to tropospheric ozone andparticulate matter

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From the Vehicles We Drive…to the Air We Breathe

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How Ozone Forms

As NOx Mixes with Air and Sun,Dreaded Ground Level Ozone and

Other Damaging Pollutants are Formed.

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U.S. NO2 Emission Density

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What Does this Mean to All of Us…

and to Our Grandchildren?

• In 2014, the World Health Organization estimated 7million premature deaths worldwide due to air pollution.

• An MIT study estimated 200,000 premature deaths in theU.S. each year due to air pollution.

• The International Energy Agency estimates China’ssmog is reducing life expectancy by 25 months.

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The Health Costs of Pollution

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The Monetary Costs of Pollution

• The World Bank estimates air pollution is costingthe world economy more then $5 trillion annuallyin welfare costs.

• The International Energy Agency estimatesadditional costs in life-saving innovations as:

– $2.3 trillion for advanced pollution controls in vehicles

– $2.5 trillion for advances in the energy sector

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The Science BehindPhotocatalytic Reactions

The use of Titanium Dioxide (TiO2) as aphotocatalyst was discovered in 1972.

• When exposed to UV light, TiO2 creates hydroxylradicals and superoxides.

• These intermediates then oxidize to reduce NOx, whichoxidizes into water-soluble nitrates that are washed wayby rainfall.

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Proven in Application: Roofs

A CNRS study ofNoxite® roofingdemonstrates an89% reductionin NOx!

Source: Centre National de la Recherche Scientifique – French National Scientific Research Centre

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Roofing Case Study

• Sustainable

• Proven in Performance

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Proven in Application: Buildings

Torre de Especialidades Hospital,

Mexico City, Mexico

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Proven in Application: Buildings

Palazzo Italia, 2015 World’s Fair,

Milan, Italy: 9,000 sq.m Tiocem®

Photocatalytic Concrete with TIO2

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Proven in Application: New Concrete Roads

Borgo Palazzo Street,

Bergamo, Italy: New Roadways,

Tiocem® Photocatalytic Concrete

with TIO2

Two Weeks ofTesting:

NOx reductionsof 41-49%

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Charlotte County, FLA.R.A.-1 Ti® polymerized

asphalt rejuvenator with

pollution remediation

• Maltene-Replenishing

• Air-Purifying

• Deep Penetration

• Increased Longevity

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Proven in Application:Existing Concrete Roads

Austin, TX, TxDOT – I-35PCC Softer Aggregate PavementLitho 1000 Ti® concrete sealerand hardening agent with pollution remediationand Skidabrader surface texturing• Maltene-Replenishing• Air-Purifying• Deep Penetration• Increased Longevity• Enhanced Texturing

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Proven in Application: All Roads

• Marginally more expensivethan regular “top of the curve”preservation strategies

• Significantly contributory toremediating air pollution

• Equally effective on new andexisting concrete andasphalt roadways

VehicleExhausts

Pavementsurface

A.R.A.- 1 TiorLitho 1000TiTreated Surface

NOx oxidized to NO3

Inert NO3 washed away

gas

Photocatalytic Pavementswith

Titanium Dioxide fortified

A.R.A –1 Ti or Litho 1000Tifor

ASPHALT CONCRETE

Inert

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Imagine the Possibilities

Pollution-Remediating…

• Roofs

• Buildings

• Roadways

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The Need is Clear, The Time is Now

The future istheirs…theresponsibility, ours.

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Chris Evers

727-638-1699