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5/12/2011

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Acknowledgments

Today’s episode is co-produced with:

ACS Green Chemistry Institute® Learn more at: www.acs.org/greenchemistry

Contact ACS Webinars™at [email protected]

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ACS Webinars Classics Do Business and Chemistry Skills have to be like Oil & Water? www.acswebinars.org/leger

Lynn Leger, GreenCentre Canada

ACS Webinars. On Demand. www.acswebinars.org/archives

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Upcoming ACS Webinars™ www.acswebinars.org/events

Thursday, May 19, 2011

Turning on the Light Bulb – Idea Generation and Idea Evaluation Nick Conti, VP, Quest Diagnostics

Thursday, May 24, 2011

International Year of Chemistry 2011 – Materials and Health Community Engagement Lynn Hogue and Tracy Halmi

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ACS WEBINARS™ May 12, 2011 Green Chemistry and Renewable Energy – Two Peas in a Pod

Michael Heben, University of Toledo

Bob Peoples, ACS Green Chemistry Institute®

Please submit questions via the Questions Panel in GoToWebinar

Download slides: http://acswebinars.org/heben Contact ACS Webinars™at [email protected]

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Green Chemistry and Renewable Energy:  Like Two  Peas in a Pod

How So?

Michael J. Heben Department of Physics and Astronomy School of Solar and Advanced Renewable Energy Wright Center for Photovoltaics Innovation and Commercialization 9 University of Toledo

Green Chemistry: the Twelve Principles 1. 2. 3.

Waste Prevention. Atom Economy. Less Hazardous Chemical Syntheses: Use and generate low toxicity  substances. 4. Designing Safer Chemicals. 5. Safer and less Solvents and Auxiliaries. 6. Design for Energy Efficiency. 7. Use of Renewable Feedstocks. 8. Reduce Unnecessary Derivatization, Combine Steps and Proceses:  More elegant, simpler approaches*. 9. Catalytic reagents: As selective as possible. 10. Design for Degradation at end of Function. 11. Real‐time Analytical Methodologies for Pollution Prevention, Process  Monitoring.   12. Inherently Safer Chemistry for Accident Prevention.

Sustainable, low‐impact, efficient and safe processes * Modified slightly from version at ACS GCI 

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After Anastas, et al., 1998.

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Basic Accounting for a Generic  (Chemical) Process Energy

Energy

Feedstocks

Products

Solvents, etc. 

Capital  Equipment

Waste

Process 3… 

True, with Differing Inputs/Outputs, for any Chemical,  Physical, Power Generating or Energy Storage Tech. 11

In the End, It’s all About the Money For Green Chemistry, it comes down  to cost, when all costs are included. The same is true for Renewable  Energy technologies. When everything is included, the real  metrics have to do with value; ‐ What are you making? ‐ Why is it needed by society? ‐ What are the impacts of making it? ‐ Or not making it? 

Large rai stone money in the village of  Gachpar, Yap, Micronesia; the largest  are 3 meters in diameter and weigh 4  metric tons (Wikipedia and NPR)

Better, cleaner, less expensive, more “valuable” processes 12

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Humanity’s Top Ten Problems for next 50 years 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.

ENERGY WATER FOOD ENVIRONMENT POVERTY TERRORISM & WAR DISEASE EDUCATION DEMOCRACY POPULATION

List Developed by Nobel Laureate Richard Smalley, while surveying colleagues, from 2002-2003

2011 2004 2050

6.9 6.5 ~ 10

Billion People Billion People Billion People

13 http://cnst.rice.edu/content.aspx?id=246

What Kind of Energy is Needed? Growth

Climate Change

• Global energy consumption increases on average ~1.6-1.7% per year. • Includes 1%/yr. efficiency improvement • 28 TW global power consumed by 2050

Graphic design: Michael Ernst, Woods Hole Res. Center

• Population growth primarily in lessdeveloped countries increased Carbon intensity.

• Need 15 TW of CO2 free power by 2050 to stay below 550 ppm M. I. Hoffert et. al., Nature, 1998, 395, 881. Health Coal-fired power plants: 59% of total U.S. sulfur dioxide pollution 18% of total nitrous oxides every year largest source of toxic mercury pollution U. S. power plants release over 40% of U.S. CO2 [Sources – U.S. DOE and U.S. EPA]

Acid rain, smog (ozone), soot Respiratory problems A developmental toxin 14 After R. Ellingson

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How are We Doing so Far? 99 Quad  = 29,000 TWh or 3.3 TW needed/yr

• In 2008, total worldwide energy consumption was 132,000 TWh, corresponding  to an average annual power consumption rate of ~15 terawatts. • For the world, in 2006, 18% of energy used was Renewable, 13% was Biomass. 15

PV Alone Could Meet US Energy Needs

‐ 10,000 square miles, less than ¼ of the area covered by roads and streets. ‐ assumes 10% solar‐electricity conversion efficiency. Turner, Science 85 1999

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Renewable Energy Potential

17 Courtesy N.S. Lewis

Solar PV is a Booming Industry CAGR of ~30 ‐ 40% for Last Ten Years

For comparison: Installed world capacity of 442 Nuclear Reactors is ~ 375 GW (100 GW in USA, not growing) Installed world capacity of Wind Turbines is ~197 GW (20 – 30% CAGR) http://www.euronuclear.org/info/encyclopedia/n/nuclear‐power‐plant‐world‐wide.htm http://www1.eere.energy.gov/solar/pdfs/dpw_chu.pdf http://www.wwindea.org/home/index.php

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Why? Improvments in Processes Reducing $/W – Using Green Chemistry Principles Crystalline Silicon Modules

Thin Film Modules

45 ‐ 60% yield of Si,  More handling Higher Efficiency (~18% module)

Lower materials Costs More fully automated Lower Efficiency (~10% module)

Ref:  ‘Overview and Challenges of Thin Film Solar Electric Technologies’, Harin S. Ullal, Ph.D., NREL 2008

19 Courtesy of Brian Keyes, NREL

For Si, Material Costs are Critical Hemlock Semiconductor Group’s (HSC)  high‐purity poly Si feedstock process

T. Saga, NPG Asia Mater. 2(3) 96–102 (2010)

Leading world supplier of  high purity poly‐ crystalline silicon to the  semiconductor and solar  industries: 36,000 metric  ton capacity by 2010

20 http://www.hscpoly.com/content/hsc_prod/manufacturing_overview.aspx

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From J. Lushetsky, NIST Workshop for Advances in PV Technologies and Measurements, Denver CO, May 12, 2010

Historical and Projected Experience  Curves

Poly Si shortage

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Fracking is Also Growing

After EPA Draft Plan to Study the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources (2011) 

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“Unconventional” Natural Gas

28% of NG Production in 1998,  50% in 2009, increasing to 60%  by 2035 ~35,000 wells are fractured each year in the U.S. If the majority of wells are horizontal, the water requirement ranges from 70 to 140 billion gallons/yr, equivalent to the water used by 1  to 2 cities of 2.5 million people. Hundreds of different chemicals, many known carcinogens,   are added to the fracking fluids, in concentrations of ~0.5%.  These and other species  released by fracturing (including naturally occurring radioactive species) may reach aquifers,  or be diverted via flowback to municipal water treatment facilities.  23

EPA Draft Plan to Study the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources (2011) 

Energy Subsidies: Black Not Green

http://www.window.state.tx.us/specialrpt/energy/subsidies/

Renewable Energy is Growing in the Energy Mix Despite  Heavy, Direct Federal Subsidies to Fossil Fuels

http://www.eli.org/pdf/Energy_Subsidies_Black_Not_Green.pdf

• Calculated Subsidies do not including other important health, environment,  and national security costs. • “Green” considerations may in fact be driving the growth in Renewables. • Technologies like Fracking can grow due to both Direct and Indirect Subsidy. 24

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http://www.nrel.gov/docs/fy04osti/35489.pdf

Energy Payback Time for PV

Over a projected 28 years of clean energy production, a rooftop system with a  2‐year energy payback and meeting half of a household’s electricity use would  avoid conventional electrical‐plant emissions of more than half a ton of sulfur  dioxide, one‐third a ton of nitrogen oxides, and 100 tons of carbon dioxide 25

World Energy Millions of Barrels per Day (Oil Equivalent) 300

No Analog to Energy  Payback Time for  Fossil Fuels. 

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100

0 1860

1900

1940

1980

2020

2060

2100

Source: John F. Bookout (President of Shell USA) ,“Two Centuries of Fossil Fuel Energy”  International Geological Congress, Washington DC;  July 10,1985.  Episodes, vol 12, 257‐262 (1989). 26 http://cnst.rice.edu/content.aspx?id=246

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Topics We Didn’t Cover that Use the  Same Principles as Green Chemistry • A lot…. • Cogeneration (combined Heat and Power) • Hybrid Vehicles • Concentrated Solar Power • Biomass (Cellulosic) • Artificial Photosynthesis, Sunlight to Fuels • Hydrogen Generation and Storage Technologies • Electrical Power Storage • Energy Efficiency and Conservation • Urban Planning • Other topics, I am sure.…………. 27

From a Global Perspective: What’s in our Flask? Photo & caption info: ADAM NIEMAN / SCIENCE PHOTO LIBRARY

Volume of Earth:  1.1 × 1012 km3 Volume of water:  1.4 x 109 km3 Volume of atmosphere:  4.2 x 109 km3 Solar Energy at Earth’s Surface: 1.25 x 105 TW  28

http://cnst.rice.edu/content.aspx?id=246

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Q&A SESSION Green Chemistry and Renewable Energy – Two Peas in a Pod

Michael Heben, University of Toledo

Bob Peoples, ACS Green Chemistry Institute®

Please submit questions via the Questions Panel in GoToWebinar

Download slides: http://acswebinars.org/heben Contact ACS Webinars™at [email protected]

29

Acknowledgments

Today’s episode is co-produced with:

ACS Green Chemistry Institute® Learn more at: www.acs.org/greenchemistry

Contact ACS Webinars™at [email protected]

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Contact ACS Webinars™at [email protected]

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5/12/2011

Upcoming ACS Webinars™ www.acswebinars.org/events

Thursday, May 12, 2011

Green Chemistry and Renewable Energy – Two Peas in a Pod Michael Heben, University of Toledo

Thursday, May 19, 2011

Turning on the Light Bulb – Idea generation and Idea Evaluation Nick Conti, VP, Quest Diagnostics

Contact ACS Webinars™at [email protected]

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Help Shape the future of ACS Webinars!

Join the ACS Webinars Audience Advisory Panel! Learn more: www.acswebinars.org

Contact ACS Webinars™at [email protected]

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5/12/2011

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