introduction to green chemistry - home -...
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Introduction to Green ChemistryInstitute for Green and Sustainable Science
Summer 2009Marian University
Carl Lecher, Ph.D.Assistant Professor of Chemistry
Director of the Marian University Institute for Green and Sustainable
Science
June 29th-July 31st , 2009
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Overview
The Benefits of Organic ChemistryCosts of a Chemical SocietyWhat is Green Chemistry?Why is Green Chemistry important?12 Principles of Green ChemistryThe Future of Green Chemistry
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Benefits of An Organic World
Organic chemistry and organic molecules play profound roles in our lives.
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As individuals and as a society, we depend on these products
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Benefits at What Cost?
Global chemical sales totaled 1.5 trillion dollars in 1998.This corresponds to the annual production of millions of tons of chemicals
The production of chemicals leads to chemical emissionsIn the United States in 1994, there were 2.26 billion pounds of 300 hazardous substances released into the environment
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Early Chemical Industry
Waste Disposal – land, air, water
Chemical Hazards – unknown, unconcerned
Safety – minimize personal exposure
Coke Plant NaphthaleneSettling Pans, 1916
Union Carbide1920’s
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Hazard Avoidance – Minimize Exposure
Washington University (St. Louis)$55M Lab Science Building
Canadian ExplosivesResearch Laboratory (Ottawa)
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Accidents Can Happen
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Accidents Can Happen
Cyanide spillBhopal, India (1984)
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‘Dilution is the Solution to Pollution’
Chemical emissions were essentially unregulated from the start of the Industrial Revolution through the mid 1950sChemical release into the air, water, and land did not seem to matterIgnorance of:
Chronic toxicityBioaccumulationCarcinogenicity
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Early Waste Disposal
Valley of the DrumsBullitt County, Kentucky
Bucktail Creek(Cobalt, Idaho)
http://www.epa.gov/superfund/20years/ch3pg1.htm
http://www.darrp.noaa.gov/northwest/black/
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A Legacy of Pollution
Love Canal(New York)
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A Legacy of Pollution
Cuyahoga River, near Cleveland1969
Cuyahoga River, 1952
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Mixed Perceptions of Chemistry
Better Things for Better Living … Through Chemistry (1935)
Better Things for Better Living (1980’s)
“Merchants of Death” (1930’s)
(1999)
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Better LivingThrough Chemistry
Claude MollerMixed Media
69" x 51“1994
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What Can We Do?
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We Can’t Just Ignore the Problem
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Role of Chemistry
Chemistry is the scientific discipline which addresses the structure, composition, reactivity, and energetics of substances from bulk properties to the level of atoms and molecules
As chemists, we are uniquely situated to address the global need to discover, develop, and utilize sustainable practices.
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What is Sustainability?
Sustainability can be defined as the ability of society to utilize natural resources without impairing the ability of future generations to do the same.
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Areas of Sustainability
In 2006 the NSF recognized four major areas of importance within sustainability:
environment
energy education
green chemistry
http://www.chem.uiowa.edu/research/sustainability/
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Green Chemistry: An Essential Component of Sustainability
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What is Green Chemistry?
Green chemistry can be thought of as an overarching philosophy of chemistry
Chemical choices - minimizing the hazards and maximizing efficiency
Green chemistry is fundamentally about waste prevention at the level of atoms and molecues
Chemistry with respect, not disregard, for health and the environment
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Environmental Chemistry ?
It is distinct from environmental chemistry which focuses on the chemical phenomena in the environment
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By reducing intrinsic hazard, risk can beminimized even in the event of accidentalexposure.
Risk = f [hazard, exposure]
Risk is a function of hazard and exposure
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Is Green Chemistry Expensive?
Waste = Lost Profit
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Regulations
1870 1880 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000
AMFAARPAA
AJAASBCAA
ESAA-AECAFFRAA
FEAPRAIRA
NWPAACODRA/NMSPAA
FCRPAMMPAA
120
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80
70
60
50
40
30
20
10
0
EPACTFFCACERFACRAA
PPAPPVAIEREAANTPAGLCPAABACZARAWRDAEDPOPARECACAAAGCRAGLFWRAHMTUSANEEA
SDWAASARABLRAERDDAAEAWANOPPAPTSAUMTRCAESAAQGANCPATSCAFLPMARCRANFMACZMAA
NEPAEQIACAAEPAEEAOSHAFAWRAANPAA
FRRRPASOWADPA
WSRAEARCFHSA
AQA
NAWCA
WQA
NWPA
MPRSAAARPA
HMTA
FCMHSA
NHPAWLDA
FWCAAFWA
AEA
AEPA FIFRA PAA
FAWRAMBCANPSWAIA
NBRA
AARHAYA
TAFWCA
BPA
NLRAWPA
AQAFOIA
WRPAAFCAFHSA
NFMUA
BLBAFWPCAMPRSA
CZMANCA
FEPCAPWSAMMPA
ESATAPA
RCRAAWLDI
APASWDA
CERCLACZMIA
COWLDAFWLCA
MPRSAACAAACWA
SMCRASWRCASDWAA
Num
ber
of L
aws
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The Rise of Regulation
The last 40 years has seen:Public recognition of pollutionThe creation of the EPAProliferation of environmental regulationRecognition of the need for environmental stewardship
Much has been done – even more to do
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Public Relations
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“Environmental” Control is Expensive
Berkeley Lab researchers estimate that a new fume hood technology could save 360 gigawatt-hours of electricity in California, and 2,100 GWh in the United States. At $0.08 per kWh, the annual electricity savings per hood is about $1,000 (close to 8,500 kWh saved per hood).”
http://www.lbl.gov/Science-Articles/Archive/fume-hood-elec-movie.html
There are an estimated 85,000 fume hoods in California, and more than 500,000 in the United States.
A single fume hood running 24 hours a day uses as much energy as an entire house
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12 Principles of Green ChemistryJohn Warner and Paul Anastas
1. Prevention2. Atom Economy3. Less Hazardous Chemical Synthesis4. Design Safer Chemicals5. Safer Solvents and Auxiliaries6. Design of Energy Efficiency
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12 Principles of Green Chemistry
7. Use Renewable Feedstocks8. Reduce Derivatives9. Catalysis10. Design for Degradation11. Real-Time Analysis for Pollution Prevention12. Accident Prevention
Anastas, P.T.; Warner, J. C. Green Chemistry: Theory and Practice; Oxford University Press: New York, 1998; p 30.
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Braungart and McDonough Cradle-to-Cradle: Remaking the Way We Make Things (2002)
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Trash or Feedstock?
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Use of Conceptual Metrics to Reduce a Product’s Environmental Footprint
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Green Chemistry - a Driver for Innovation
If we employ the principles of green chemistry coupled with new metrics for performance, we have the opportunity to make significant new discoveries
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Triple Bottom Line
When economic, social and environmental benefits are integrated and balanced, sustainability can be maintained.
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Green Products?
• Greenwashing is a term that describes misleading claims about the environmental safety and effects of a product or service.
• The use of appropriate metrics will stem the greenwashing of products
Note - the Clorox product line depicted may or may to be green – need metrics!
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Does Green chemistry have a Direct Impact on Your Life?
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Direct Impact on Your Life
Green Chemistry can make your community a cleaner, safer place
Reducing local pollutionReducing transportation of hazardous materialsMore affordable products
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Where does the Future lay?
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Future Educational Challenges
1. Cultivate an understanding of basic principles of chemistry, environmental sciences, toxicology and sustainability
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Future Educational Challenges
2. Foster interest in careers in science, chemistry, engineering and other related disciplines
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Future Educational Challenges
3. Build a workforce equipped with the scope and breadth of knowledge and skills to advance green chemistry and an intellectual environment that catalyzes the development of new ideas and technological innovations
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Future Educational Challenges
4. Develop a well-informed citizenry capable of actively engaging in demanding and supporting green products and processes and avoiding unsafe chemical use and disposal practices
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Questions?