Friday, March 30, 2007

Mercury in energy-saving bulbs worries scientists

Mercury in energy-saving bulbs worries scientists
By Lisa Von Ahn
Thu Mar 29

There's an old joke about the number of people it takes to change a light bulb. But because the newer energy-efficient kinds contain tiny amounts of mercury, the hard part is getting rid of them when they burn out.

Mercury is poisonous, but it's also a necessary part of most compact fluorescent bulbs, the kind that environmentalists and some governments are pushing as a way to cut energy use.

With an estimated 150 million CFLs sold in the United States in 2006 and with Wal-Mart alone hoping to sell 100 million this year, some scientists and environmentalists are worried that most are ending up in garbage dumps.

Mercury is probably best-known for its effects on the nervous system. The Mad Hatter in the classic children's book "Alice in Wonderland" was based on 19th-century hat makers who were continually exposed to the toxin.

Mercury can also damage the kidneys and liver, and in sufficient quantities can cause death.

U.S. regulators, manufacturers and environmentalists note that, because CFLs require less electricity than traditional incandescent bulbs, they reduce overall mercury in the atmosphere by cutting emissions from coal-fired power plants.

But some of the mercury emitted from landfills is in the form of vaporous methyl-mercury, which can get into the food chain more readily than inorganic elemental mercury released directly from a broken bulb or even coal-fired power plants, according to government scientist Steve Lindberg.

"Disposal of any mercury-contaminated material in landfills is absolutely alarming to me," said Lindberg, emeritus fellow of the U.S. Department of Energy's Oak Ridge National Laboratory.

The mercury content in the average CFL -- now about 5 milligrams -- would fit on the tip of a ballpoint pen, according to the U.S. Environmental Protection Agency, and manufacturers have committed to cap the amount in most CFLs to 5 milligrams or 6 milligrams per bulb.

The majority of Philips Lighting's bulbs contain less than 3 milligrams, and some have as little as 1.23 milligrams, said spokesman Steve Goldmacher.

To prevent mercury from getting into landfills, the EPA, CFL makers and various organizations advocate recycling.

Besides commercial recyclers and some municipal waste collection services, some retailers accept used CFLs.

IKEA, the Swedish home furnishings chain, has free drop-off programs at all of its 234 stores, 29 of which are in the United States. Spokeswoman Mona Astra Liss said response was slow at first, but has since picked up.

Now advocacy groups are calling on Wal-Mart Stores Inc. and other big chains to get involved.

Andy Ruben, vice president for corporate sustainability at Wal-Mart, said the company was working with the EPA's Office of Solid Waste and others to find mercury and recycling solutions.

RECYCLING HURDLES

One problem with recycling is that it isn't cheap.

Larry Chalfan, executive director of the Zero Waste Alliance environmental group, said the value of the metal, glass and mercury reclaimed from recycling fails to offset the cost of the process. "Someone has to pay," he said.

Costs can range from 20 cents to 50 cents per bulb -- not a paltry sum when some CFLs sell for less than $2 at Wal-Mart.

But, compared with the overall lifecycle cost of buying and using a bulb, recycling would be less than 1 percent, said Paul Abernathy, executive director of the Association of Lighting & Mercury Recyclers, "a small price to keep the mercury out of the environment."

Another obstacle lies in the fragility of the bulbs and their mercury content.

"People who are going to accumulate these things from the public are going to have to address the fact that breakage will happen," Abernathy said. "There's the potential for contamination, and I think right now people are a little hesitant to volunteer to take on this liability."

The U.S. government has no single recycling plan in mind, said Matt Hale, director of the EPA's Office of Solid Waste.

Among the alternatives are special curbside collections by municipalities, mail-back programs by manufacturers and drop-off programs at various places, including retail stores that sell CFLs, he said.

Some methods lend themselves to certain geographic areas more than others, Hale said, because of differences in population density, transportation infrastructure and proximity to recycling sites.

State laws are also a factor.

Federal regulations mandate recycling of fluorescent lighting, while exempting households and other small users. Some states, however, are strict. For example, California no longer allows anyone to throw CFLs in the trash, while Massachusetts requires manufacturers to implement recycling programs and meet certain targets.

As technology advances, however, mercury could become less of an issue, at least as far as light bulbs are concerned.

Last month General Electric Co. said it was working on doubling the energy efficiency of incandescent lights and eventually developing versions comparable with CFLs. These bulbs, which the company hopes to begin marketing in 2010, will cost less than fluorescents but they won't last as long.

Meanwhile, some environmentally minded consumers are embracing CFLs and doing their best to dispose of them responsibly.

"I have CFLs throughout my house," said Lindberg, who lives in California. "None of them have burned out yet. I can't tell you what I'll do with them when they've burned out, but I won't throw them in the garbage."
Copyright © 2007 Reuters Limited.

Hmm...the number one neurotoxin now being advertised and promoted. Arg, when will it end? There's gotta be a greener solution that doesn't cause disorders in living things.

6 comments:

nomercuryinuranus said...

Kooky isn't it? The bulbs are efficient and saving energy is good. I worry about DISPOSAL though. And if a bulb breaks at home you need to wear rubber gloves when cleaning up the glass according to the directions. What if there are kids around the broken pieces? And who's to say disposal companies will properly care for the waste? I just scratch my head and feel a bit lost. You?

KS

Ashley loves Leo said...

I do feel a bit lost, as there isn't an easy situation. Companies can't even keep up with recycling. We all recycle, but something like 80% of it ends up in garbage with everything else. That's the problem, disposal, and the root of it, EDUCATION. It's always the situation it seems, aye?

Laura said...

Yeah, we had a couple of those burn out, and I read "mercury" on the bulb and felt great that I had something that could possibly emitting mercury into my home. Wait, I'm sure they really tested them well before hand. Sarcasm. I had to research where to take the things to recycle, and when I found a lamp store that takes the bulbs, they charged me a few bucks. Who knows if they'll actually recycle them.

Ashley loves Leo said...

Yeah, you wonder. You're so ahead of the game Laura!

Ed said...

The bogus argument is that there will be a reduction in toxic mercury into the environment with CFL’s due to the energy reduction from coal plants. (1) 50% of electricity does not come from coal plants in the US and coal plants are now mandated to reduce their mercury emissions by between 70% and 90% in the next several years. (2) Places like California produce very little energy from coal plants, so CFL energy reductions will not cut much mercury there. (3) The 5mg of mercury claimed for CFL’s is largely a goal and not the current reality which can be 300% to 600% higher. (4) CFL’s are made in China with energy from mostly very dirty coal plants that emit much more mercury than US coal plants. (5) CFL’s made in China spill as much mercury into the environment as goes into the CFL’s. (6) CFL’s are delivered here on ships using bunker oil, the worst mercury producer of the fuel oils. Incandescent bulbs are still almost all made in the US. (7) There is no recycling program in place or planned that could handle the number of CFL’s proposed. And after many years even the industrial recycling programs only handle 25% of the mercury from fluorescent lights. (8) It is likely that if any major recycling program is set up, the CFL’s will be shipped back to China for reprocessing. THUS, a massive CFL program will put a massive amount of toxic mercury into the environment and very likely into our kid’s bodies. And the EPA says that a sixth of them already have too much mercury in them.

IKEA Dave said...

I recently left IKEA after 5 years service with one of their stores in the UK. In both my roles during that time, I would have come into contact with hundreds, if not thousands, of damaged Low Energy bulbs through store replenishment, and then disposal. Although IKEA have a policy that all damaged or spent bulbs are sent to a regulated recycling company, little though was extended to people, like me, that handled the damaged item every day. I have now written to my es-store manager to ask if IKEA would be willing to pay for a Mercury scanning test, jut to put my mind at rest. I feel this should also extend accross the thousands of staff in similar positions.

Watch this space....LOL
Dave