Mercury pollution caused by energy-saving lamp to resist environmental – china C
When environmentalists around the world warmly touted compact fluorescent bulbs, the others have already started to pay attention the potential of this new bulb mercury pollution.
Compact fluorescent light bulb is actually a kind of energy-saving lamps. Many people think that it can replace the use of up to 125 years of traditional incandescent. Compact energy-saving light bulbs more expensive prices than the traditional incandescent lamp, energy saving and durable but have gradually been accepted.
However, most recently, energy-saving lamp has been recycling industry officials and some environmental scientists to resist, they warned that the internal light bulb toxic threat to health and the environment than people previously thought to be large.
It is estimated that in 2006 the U.S. sold 150 million energy-saving fluorescent light bulb; in 2007, it sold about 300 million. Faced with this data, some environmentalists and scientists began to worry about the ultimate fate of these fluorescent lamps would be a landfill.
When the energy-saving lamps had just listed a few years ago, when consumers complained that they are noisy, lamp glare, light blue hair, but their stocky appearance and long life gradually to hot up?? Fluorescent lamp is by in the heating gas to light, and is generally believed that 50% energy than incandescent lamps, or incandescent lamp life several times.
According to U.S. Environmental Protection Agency (EPA) estimates that if every American family regarded as a family replace incandescent Energy Star-certified compact fluorescent bulbs, energy saving over the year can be about 300 million households for lighting, and equivalent to 800,000 cars by blocking the release of greenhouse gases.
5 mg of mercury threat
Energy-saving lamp is good, however, has always been a lingering problem, which is its mercury content. Mercury is a brain injury can cause kidney and nerve toxins, people will be exposed to excessive mercury pollution death.
Energy-saving lamps in the minimal amount of mercury, an average of about 5 mg, this amount is probably just enough to tip covered with a ballpoint pen.
In comparison, a world-famous brand light bulbs mercury content was less than 3 milligrams, and some are less than 1.23 mg, and a mercury thermometer can be as high as 500 mg of mercury, equivalent to the amount of 100 energy-saving light bulbs.
But is this a mere 5 mg of trace, according to Stanford University study concluded that mercury has been sufficient to pollute 6,000 gallons of drinking water, make up less than safe standards for drinking water. Even if the recently introduced "low mercury" light pollution, 1,000 gallons of water will make it excessive.
Mercury is being installed in the bulb, and presumably energy-saving fluorescent light bulbs are very safe. But Johns Hopkins University environmental health professor, "Environmental Research" magazine editor Alan (EllenSilbergeld) pointed out: In the end, any bulbs, including energy-saving fluorescent bulbs are broken or burned, while the vast majority of consumers is simple to throw their garbage.
She said: "This is the flow of untreated wastewater directly into a huge mercury pollution."
Released from the landfill will be part of the mercury in the form of methyl mercury vapor into the atmosphere, methyl mercury than the coal-fired power plant broken light bulb or direct inorganic elemental mercury released into the food chain more easily.
Alan said: "The irony is that, while the EPD said, 'Do not worry, it only a little mercury', on the other hand, they spent a whole page to explain the energy-saving light bulbs, if broken how to handle."
In general, because of energy conservation, governments are authorized fluorescent. Not long ago, the U.S. Democratic presidential candidate Barack Obama talked about energy conservation "simple steps", including the energy-saving fluorescent bulbs.
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