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Contents

What is chemistry?What are wastes?Pollution?Problems!Solutions!What is Green Chemistry?Effects!Principles!Uses of Green Chemistry?Pathing Through!

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Social Image Of ChemistryThe “Ideal Sustainable Product”Social Image Of ChemistryThe “Ideal Sustainable Product”

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Societal Image of Chemistry

• Chemistry was once viewed as a field of innovation resulting in medical breakthroughs and modern convenience.• Chemistry is now viewed by many as fouling theplanet.

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The Ideal The Ideal “Sustainable”Product“Sustainable”Product

Consumable - compostable, Consumable - compostable, biodegradable biodegradable Stays in Technical Loop - Stays in Technical Loop - product of service, reusable, product of service, reusable, recyclablerecyclable Minimized hazard in product Minimized hazard in product and manufacturing process. and manufacturing process. HazardHazardincludes human health, safety includes human health, safety and ecological harm - Green and ecological harm - Green ChemistryChemistry

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Historical approch to Environmental problems….

Variety of Chemicals Used in Cities….

Historical approch to Environmental problems….

Variety of Chemicals Used in Cities….

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Historical Approach to Environmental Problems

• Waste treatment, control, and disposal; pollutantmonitoring; hazardous waste site cleanup.• Development of standards for emissions to air,releases to water, and disposal by land, as well asregulation of these standards.• “Command and Control.

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Command and control cost to IndustryIncrease in Environmental laws

Chemical releases

Command and control cost to IndustryIncrease in Environmental laws

Chemical releases

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“Command and Control” Cost to Industry

• Industry spent $115 billion in 1992 on waste treatment, control, and disposal.• It was estimated at that time that it would cost as much as $700 billion to clean up existing hazardous waste sites.• These costs, and the costs associated withregulatory compliance, are rising…

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Pollution prevention act 1990Pollution prevention act 1990

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• Pollution Prevention can be accomplished by several approaches:– Inventory controls.– Process controls.– In-process recycling.– Housekeeping changes.– Green Chemistry

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•Paul Anastas•Paul Anastas

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Green Chemistry

Green Chemistry is the design of

chemical products and processes that

reduce or eliminate the use and/or

generation of hazardous substances.

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Effect graph 1Effect graph 2Effect graph 3

Effect graph 1Effect graph 2Effect graph 3

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Chemistry and Responsible CareGood, but Good Enough?

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Chemistry and Responsible CareGood, but Good Enough?

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Chemistry and Responsible Care

Good, but Good Enough?

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1. Prevention of waste2. Atom Economy3. Less Hazardous Chemical Synthesis4. Designing Safer Chemicals5. Safer solvents and auxiliaries6. Energy efficient7. Renewable feedstocks8. Reduce derivatives9. Catalysis10. Design for degradation11. Real time analysis for pollution prevention12. Safety

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Atom Economy

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Green Chemistry InChemical Manufacturing

• Create new ways to make desired materialsdifferentfeedstocks, different pathways• Identify desired performance characteristicsand create new materials

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Green Chemistry InNon-Chemical Manufacturing

• Identify materials that are unsustainable andphase them out• Identify benign materials that already existand select them• Work with vendors and manufacturers todevelop new benign and environmentallyappropriate materials. Competitive edge!

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Benefits of Using Biomass

• Renewable Feedstock• Contributes no net CO2 to the

atmosphere• Conserves fossil fuel leading to a

securedomestic supply

• Platform for making an array of chemical

products from what is otherwise considered

waste

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Green Chemistry at Patagonia-Committed to the Core!

• PET from recycled 2-liter soda bottles are used as the base material for Synchilla, a signature Patagonia fleece• Eliminated chlorine bleach in fabric• Reduced formaldehyde use• Elimination of azo dyestuffs• Elimination of PVC in luggage fabrics, plastic components and clothing labels• Organic Cotton-using a renewable feedstock in a more sustainable way

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Summary

• Green Chemistry provides a technical solution tomany environmental problems• Effective due to design stage efforts, starting at themolecular level lets you design out the hazardousproperties and design in environmentally appropriatefeatures.• A systematic approach can ensure effectiveapplication.• Why Green Chemistry? Because we can….

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Parting thought...

“We do so much to prepare our children

for the future, but are we doing enough

to prepare the future for our children?”

--Larry Chalfan

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