Compact Fluorescent Bulbs (CFL's), Shrink Wrap, Mercury and the Environment
CFL's are sold within the context
of being beneficial to the environment.
Two things come to light
which might lead one to question this assumption:
CFL's
(unlike incandescent bulbs) contain
mercury which has a negative environmental impact when released.
The
Popular
Mechanics article Compact
Fluorescent Bulbs and Mercury: Reality Check
suggests that coal burning power plants emit more mercury (than what
is contained in one CCFL) into the environment for each incandescent
bulb of equal light output to a CFL.
On the other hand, how
do the individual consumers' efforts to properly recycle used CFL's
compare with the regulations (and adherence thereto) for power
plants when it comes to the proper disposal of mercury? Also,
instead of comparing the amount of mercury produced by coal-burning
power plants, it would seem more accurate to compare the overall
differential of mercury released to the environment resulting from
the use of a CFL verses an incandescent bulb. And, ... beyond the
impact of the mercury, one should not forget other environmental
benefits of using CFL's.
The CFL's on the market today
are typically (but not always) packaged in shrink-wrap which is also
believed to have a negative environmental impact...
Would it help
to encourage store managers to not stock their shelves with
shrink-wrapped CFL's?
Note, there are corn-based shrink-wrap
package options (polylactic acid (PLA)) which at first glance would
seem to have less of an impact; however, as throughly discussed in
the Omnivore's
Dilemma, the production of corn also has a significant
environmental impact.
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Links:
Popular
Mechanics
article Compact
Fluorescent Bulbs and Mercury: Reality Check (June
11, 2007)
http://www.popularmechanics.com/blogs/home_journal_news/4217864.html
Amazon.com's
link on Omnivore's Dilemma
http://www.amazon.com/Omnivores-Dilemma-Natural-History-Meals/dp/0143038583/ref=pd_bbs_sr_1?ie=UTF8&s=books&qid=1197231747&sr=8-1
Packaging
Tellus
Institute, 1992
http://www.ilea.org/lcas/Tellus.html
Compact
Fluorescent Lamp / Recycling Project Phase I / Draft Report /
Background Research and Program Options
http://www.zerowaste.org/cfl/IMAGES_A/phase_I_rpt.pdf
Biopolymer
Market Analysis
http://www.biorenew.iastate.edu/fileadmin/www.biorenew.iastate.edu/images/research/Biopolymer_Market_Analysis_Final_Report.pdf
Compact
fluorescent light bulbs contaminate the environment with 30,000
pounds of mercury each year
http://www.newstarget.com/021907.html
Query
submitted about process employed to decide on incandescent bulb ban
in Canada
http://www.nrsp.com/letter-nrsp%20to%20baird-07.05.10.html
UK
Editorial: Green light bulbs: Not such a bright idea
http://environment.independent.co.uk/green_living/article3185128.ece