A New Bulb on the Block

  • imothy D. Sands, at left, director of Purdue's Birck Nanotechnology Center in Discovery Park, and graduate student Mark Oliver, operate a "reactor" in work aimed at perfecting solid-state lighting, a technology that could cut electricity consumption by 10 percent if widely adopted. Purdue researchers have overcome a major obstacle in reducing the cost of the lighting technology, called light-emitting diodes. (Photo by David Umberger, courtesy of Purdue News Service)

Unless you like to live by candlelight,
you have to buy lightbulbs. But the options
out there aren’t that great. Jessi Ziegler reports how all that might change soon:

Transcript

Unless you like to live by candlelight,
you have to buy lightbulbs. But the options
out there aren’t that great. Jessi Ziegler reports how all that might change soon:

Plain-old incandescent lightbulbs are not efficient. That’s
old news.

And fluorescents? The color is funny and they have toxic
mercury in them.

So, what option is left?

LED lights. They’re as efficient as compact flourescents
minus the mercury.

The problem? They’re one-hundred-dollars-a-bulb
expensive.

But scientists at Purdue have been working on a way to
cut that cost.

Researcher Timothy Sands says in about 5 years, LEDs could
cost the same as the other bulbs.

“So, the nice thing about it is you can save energy, and
actually save money over the long haul – even though the
initial cost is very high right now, without changing what
you’re used to, or without lowering your standards for
lighting.”

And Sands says another big advantage of LEDs is you’d only
have to change the bulbs every 15 years.

For The Environment Report, this is Jessi Ziegler.

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Cleaning Up Compact Fluorescents

  • Photograph of illuminated incandescent-replacement fluorescent bulb. (Source: Jdorwin at Wikimedia Commons)

Compact fluorescent lightbulbs are one of
those classic environmental dilemmas. They’re very
efficient – they use as little as one fourth of the
energy a traditional lightbulb uses. But there’s
a twist: they have a small amount of the toxic chemical
mercury in them. Rebecca Williams takes a look at
what to do if a lightbulb breaks in your home:

Transcript

Compact fluorescent lightbulbs are one of
those classic environmental dilemmas. They’re very
efficient – they use as little as one fourth of the
energy a traditional lightbulb uses. But there’s
a twist: they have a small amount of the toxic chemical
mercury in them. Rebecca Williams takes a look at
what to do if a lightbulb breaks in your home:

You can’t get around it – right now there has to be mercury in compact
fluorescent lamps, or what the experts call CFLs. The bulbs can’t produce
light without it. But mercury is toxic. It can cause brain damage and
developmental problems in fetuses and young children. And that worries
people.

The good news is: the amount of mercury in compact fluorescents is very
small. On average there are about 5 milligrams of mercury in a CFL.
That’s about what would fit on the tip of a ballpoint pen.

Jeff Krcmarik is an expert on household hazardous waste.

“There’s 100 times more mercury in a thermometer than in one CFL.”

Krcmarik says there’s absolutely no reason to panic if a bulb breaks in your
house. You just need to be careful cleaning it up.

So, let’s have the experts walk us through it. First, we’re going to have to
smash a light bulb.

“Well we have a compact fluorescent light bulb here and what we’re going to
do is break it and then bring over our methylmercury gas vapor detector to
show what exactly the exposure issue is with a broken CFL.”

Okay, here we go. And kids – don’t try this at home.

(sound of lightbulb breaking)

(high pitched whining sound of vapor detector)

“This is what we use to identify hot spots in mercury spills. Dan’s going
to wand over it.”

Dan is Dan Moody. He’s the guy with the vapor detector.

“Right now we’re showing about 936 nanograms. We like to see below
300 to 400 nanograms for mercury in the environment, particularly in a residential setting or anywhere children
would be spending time.”

Very quickly, the reading’s dropped to 304 nanograms. That’s because we’ve
got the door open and the room is vented. Moody says that level’s not
something to worry about for your average adult.

The problem is the mercury can linger in your house if you don’t clean it up
the right way.

Most importantly the experts say never, ever use a vacuum. Vacuums can
spread mercury vapor through your house.

Deb Stahler is a researcher with the Maine Department of Environmental
Protection. She recently tested the best ways to clean up broken
fluorescent bulbs.

So, when you break a bulb:

“Make sure that your pets and children and other extraneous people are out of the
room. Open a window and leave the room yourself for a little while.”

Wait about 15 minutes to let the room air out before you clean up the broken
bulb.

“So when you go back in the room then I’d recommend having stiff paper, like
index cards or even just a deck of cards, to pick up the bigger pieces.”

Here’s where good ol’ duct tape comes in. You can use it to get the last
little shards of glass off the floor. Then, put all your materials into a
glass jar with a lid, seal it up, and take it out of the house.
Although some states don’t allow it, in most states, it is legal to throw
the broken lightbulbs in the trash.

And when you go to the store to replace those lightbulbs, you do have some
choices.

Alicia Culver is with the National Green Lighting Campaign. She says
manufacturers are trying to find alternatives to mercury in fluorescent
bulbs. But for now, the best you can do is try to buy ones with lower
mercury levels.

“We’re encouraging consumers to not just buy the cheapest CFL but to look
for ones that are Energy Star rated. And Energy Star is starting to put a
mercury limit on lightbulbs that they’ll qualify and rate.”

So, the bottom line? Culver says compact fluorescents are still the best
lightbulbs to buy.

Because they’re so much more efficient, compact fluorescents cut back on
electricity use. And that reduces demand on coal-burning power plants: by
far the biggest source of mercury we’re adding to our world.

For the Environment Report, I’m Rebecca Williams.

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Edison’s Invention Getting Dimmer

  • The US government will begin phasing out higher wattage incandescent bulbs in 2012. (Photo by Lester Graham)

One out of every five light bulbs sold in the U.S. is a compact fluorescent. That’s
according to new market data put out by the Environmental Protection Agency. Mark
Brush reports:

Transcript

One out of every five light bulbs sold in the U.S. is a compact fluorescent. That’s
according to new market data put out by the Environmental Protection Agency. Mark
Brush reports:


It appears the days are numbered for Thomas Edison’s most famous invention. That’s because fewer people are buying incandescent light bulbs. The EPA says that compact fluorescent light bulbs made up 20% of the overall light bulb
market last year. That’s more than double than the previous year.


Maria Vargas is with the EPA’s Energy Star Program. She says the compact fluorescent
bulbs – or CFLs – are more expensive to buy, but when you do the math, they’ll save
you money in the long run:


“A CFL lamp will save you about $30 or more in electricity costs over each bulb’s
lifetime. They use about 75% less energy and they last up to about ten times longer.”


The U.S. government will officially begin phasing out the higher wattage incandescent
bulbs in 2012.


For the Environment Report, I’m Mark Brush.

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Energy Bill by the Numbers

  • George W. Bush signed the Energy Independence and Security Act of 2007. (White House photo by Chris Greenberg)

The energy bill signed by President Bush has a little bit of something to make almost
everyone happy. Lester Graham reports on some of the highlights:

Transcript

The energy bill signed by President Bush has a little bit of something to make almost
everyone happy. Lester Graham reports on some of the highlights:


The Energy Independence and Security Act is massive, but it can be boiled down to
just a few numbers. First, 35 miles per gallon by 2020… That’s when automakers
have to increase the fleet average by ten miles per gallon.


Second, 36 billion gallons by 2022. That’s when ethanol producers have to increase
production by a factor of five. And two-thirds has to come from sources other than
corn.


And these numbers – 100 watts, 60 watts – those kinds of incandescent lightbulbs
are to be phased out, replaced by more energy efficient lighting.


Most environmental groups can find something to like in the bill. Farmers like it for
the ethanol mandates. And big oil companies like the Act for what’s not in it:
billions of dollars of proposed taxes blocked by Republicans in the Senate.


For The Environment Report, I’m Lester Graham.

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