1. Do Now:
What do these images have in common. Do you own any of them? If so, where do you dispose of them once their used up?

2. Aim: How Should We Deal with Hazardous Waste?
Concept A sustainable approach to hazardous waste is first to produce less of it, then to reuse or recycle it, then to convert it to less hazardous materials, and finally, to safely store what is left.

3. We Can Use Integrated Management of Hazardous Waste
Integrated management of hazardous wastes
Produce less
Convert to less hazardous substances
Rest in long-term safe storage
Increased use for postconsumer hazardous waste

4. Integrated Hazardous Waste Management

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6. Case Study: Recycling E-Waste
70% goes to China
Hazardous working conditions
Includes child workers
Reduce toxic components in electronics
Dell and HP take recycle their products
Europe has high-tech smelters with strict
standards

7. We Can Detoxify Hazardous Wastes
Collect and then detoxify
Physical methods: Charcoal, resin,precipitating
Chemical methods: cyclodextrin in soils
Use nanomagnets: remove pollutants from water
*Bioremediation: bacteria used to destroy toxins
Phytoremediation: plants as sponges for soil & water
Incineration
Using a plasma arc torch : HIGH TEMPERATURES and ELECTRICAL CURRENT

8. Solutions: Phytoremediation

10. We Can Store Some Forms of Hazardous Waste
Burial on land or long-term storage
Last resort only but most common.
Deep-well disposal
64% of hazardous liquid wastes in the U.S.

12. We Can Store Some Forms of Hazardous Waste
Surface impoundments
Lined ponds or pits
Secure hazardous landfills

13. Surface Impoundment in Niagara Falls, New York

15. Solutions: Secure Hazardous Waste Landfill

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18. Leaking Barrels of Toxic Waste at a Superfund Site in the United States

19. LAWS RCRA: Resource Conservation and Recovery Act.
5% of waste is regulated by RCRA
CERCLA: Comprehensive Environmental Response, Compensation, and Liability Act.
- Identify sites contaminated by HW and clean them up…aka superfund sites.
Super Fund Act: Pay for what they polluted

20. Summary:
Should the U.S. Congress reinstate the polluter pays principle by levying taxes on chemical, oil, mining, and smelting companies to reestablish a fund for cleaning up existing and new superfund sites? Explain.

21. Homework:
Complete the Ecological Footprint Analysis on pg