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Put on your hazmat suit and get out paper for today’s notes!. Protect yourself from hazardous situations – read the board!. A little Love Story. Love Canal. Abandoned hydroelectric canal sold to Hooker Chemical Co. 22,000 tons 200+ chemicals including dioxins

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put on your hazmat suit and get out paper for today s notes
Put on your hazmat suit and get out paper for today’s notes!

Protect yourself from hazardous situations – read the board!

love canal
Love Canal
  • Abandoned hydroelectric canal sold to Hooker Chemical Co.
  • 22,000 tons
  • 200+ chemicals including dioxins
  • Wastes covered, site sold to Niagara Falls school board 1955
love canal1
Love Canal
  • Birth defects
  • Dark liquids seeped into basements through walls
  • Noxious chemical smells
  • Trees and shrubs died
  • Mid-1970’s heavy rains caused groundwater levels to rise
  • Resident Louis Gibbs begins campaign to get authorities interested
  • 1978 – EPA begins testing
  • 1990 – massive cleanup began
paper mill wastes
Paper mill wastes
  • Paper mill wastes containing dioxins dumped in 1960’s and 70’s
  • Land subsided, pits disappeared
  • Crabs, fish have been showing high levels of dioxins and PCB’s for decades
  • Dioxins biomagnify ; measured here at 70,000 parts per trillion; 95% of fish and crab dangerously contaminated
  • “Dioxins can alter the fundamental growth and development of cells. In humans, adverse effects include suppression of the immune system, a variety of reproductive effects from reduced fertility to birth defects, chloracne, and cancer.”
  • Dioxin limit in seafood: .47 pptrillion
    • Catfish – 8pptrillion
    • Blue crab – 6 pptrillion!
rcra resource conservation and recovery act of 1976
RCRA - Resource Conservation and Recovery Act of 1976
  • Required all landfills to be designed to “sanitary” standards
  • Defined hazardous waste: (toxic, flammable, reactive, corrosive)
  • Required cradle to grave management of hazmat
  • 95% of materials are still “linguistically detoxified”
so what do i do with batteries and cfls
So what do I do with batteries and CFLs?

Houston South Hazardous Waste facility

ESC South11500 South Post OakZIP Code 77035

Harris county facility 6900 N Gessner/290

CFLs contain a small amount of Hg

ok but what about the wastes dumped before rcra or illegally
OK, but what about the wastes dumped before RCRA or illegally?
  • CERCLA: Comprehensive Environmental Response, Compensation and Liability Act (Better known as Superfund)
  • Identifies and prioritizes hazmat sites
  • Seeks responsible parties for payment
  • Remediates sites
epa manages superfund
EPA manages Superfund
  • National Priorities list
how can these sites be cleaned up
How can these sites be cleaned up?
  • Mechanical remediation
  • Phytoremediation
  • Bioremediation
slide19
Abandoned industrial or commercial sites.

New owners must often clean up wastes before new development can begin

Remediation of Brownfields

mechanical remediation
Mechanical remediation
  • Material incinerated and interred in haz waste landfill
  • Can get down to deepest contamination
  • Exposed soil (and contamination) may erode
phytoremediation
Phytoremediation
  • Sunflowers – Lead
  • Mulberry bush – industrial sludge
  • Canola plants – selenium
the trade offs of phytoremediation
The trade offs of phytoremediation
  • Less disturbance of area reduces risk of spreading contaminant
  • Inexpensive
  • Reduces material sent to landfill
  • Can be slow acting
  • Can only effect soil levels which roots can reach
  • Must match plant to pollutant
  • Animals could feed on plants – heavy metals could bioaccumulate
bioremediation
Bioremediation
  • Yeast, fungi, bacteria
  • Digest organic compounds into CO2 and H2O
  • Sites that are unable to be cleaned with microbes include those with high metal concentrations (i.e. mercury), highly chlorinated organics (compounds with many chlorine elements attached), and inorganic salts. These types of compounds are toxic to the microbes.
what are the tradeoffs
What are the tradeoffs?
  • Mechanical remediation
  • Phytoremediation
  • Bioremediation
  • San Jacinto Waste pits - what are our options?
slide28
US Geological survey estimates that in 2005 there were already more than half a billion old phones witting in American drawers. That added up to more than $300 million worth of gold, palladium, silver, copper and platinum.
pairs
Pairs -
  • Apply the concept of product of service to the e-waste dilemma
  • What would manufacturers have to do to make this Product of Service idea a reality?
think it s a pipe dream
Think it’s a pipe dream?
  • Xerox –
    • Solid ink – ships in block, no packaging, melts in copier
    • Copiers designed to be disassembled when outdated. Components are refurbished and included in newer models where possible.
    • Toner cartridges – returned to be refilled, not thrown out.
xerox
Xerox
  • “Before is was categorized as green, we thought of it as just being efficient.” –Ursula Burns, Xerox President
  • “I’m in a funny business – I’m looking for ways that companies can print less. Printing is not going to go away, but we think you have to print more efficiently . . .We know that if we do that we can continue to grow.” – John Kelly, president of global services at Xerox
note check
Note Check!
  • How is bioremediation different from phytoremediation?
  • How are bioremediation and phytoremediation similar?
  • What is an advantage of mechanical remediation that might explain why it is the most common method used?
  • List three toxic materials commonly found in ewaste.
  • List two precious materials commonly found in ewaste.
  • What objectives will be covered on the quiz tomorrow?
  • When is the test on STUFF?
  • When is the “complete the loop” extra credit due?
  • When is the recycling picture assignment due?