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Registered Member #1408
Joined: Fri Mar 21 2008, 03:49PM
Location: Oracle, AZ
Posts: 679
When I was a little boy I would climb to the top of a rather tall hill and look out on the lights of the town. It occurred to me that all those light-bulbs twinkling at night had been screwed in by hand.
Please correct me if I'm mistaken but do not CFL lights contain a toxic material & if so, the breakage factor would set upon the area a source of additional toxins for the sake of making an off shore manufacturer even more wealthy......
Registered Member #2463
Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546
RE/: Mercury in fluorescent lamps: Most of the mercury leaking on the planet into the environment comes from natural causes. 40 % of the US electricity comes from coal which produces most of the man-made mercury polution. The cfls reduce electrical demand, so the mercury content in the lamps offsets the mercury from the coal. If you put dead lamps in the landfill unbroken the mercury will remain, sequestered, indefinitely.
If and when, some Hg life form mutates from biomagnification in the oceans, then you may start to worry.
Registered Member #2099
Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1716
Grenadier wrote ...
They contain a small amount of mercury, though not that much. The price of Hg has risen 5 fold because of those lamps :mad:
Nope. There's been a glut of industrial mercury for years, as chlor-alkali electrolysis plants are phased out. I think there have been international policy decisions to hold prices far above "free market" in order to discourage overuse & environmental contamination.
Lots of info here (from 2002). "Similarly, estimated world use has fallen from 10,000 tons in 1975 toward 2,000 t/yr in 2002. Partly as a result, the price of mercury on the global market has fallen 95% in real (inflation-adjusted) terms,..."
"Ten remaining U.S. chlor-alkali factories are estimated to hold 3,000 to 4,000 tons that can be sold when factories close. European chlor-alkali factories contain 12,000-15,000 tons of mercury and remaining world plants may contain an additional 15,000 tons."
from another reference "EPA estimates the U.S. is responsible for the release of 104 metric tons of mercury emissions each year. Most of these emissions come from coal-fired electrical power."
4 tons of mercury is enough to fill a billion CFL's.
Registered Member #2099
Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1716
Grenadier wrote ... My 7lbs sure seems puny now.
If everybody had that much, it would be enough to meet world demand at the 2002 rate for 10,000 years. And I got more than yo-ou, neener-neener-neeener!
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CFL Bang
