New Greenhouse Gas Threat

Document Sample
New Greenhouse Gas Threat Powered By Docstoc
					                                                                                                            its absence from the Kyoto Protocol.
       W o r l d        T r e n d s             &    F o r e c a s t s                                      NF3 production has consequently in-
                                                                                                            creased 15%–17% a year, from 1,000
                                                                                                            tons produced in 1992 to a projected



Environment
                                                                                                            8,000 tons in 2010.
                                                                                                               Most of the NF3 is destroyed dur-
                                                                                                            ing these processes, but a remnant
                                                                                                            escapes into the atmosphere where it
                                                                                                            can linger for up to 740 years. The
                                                                                                            amount of NF 3 reaching the atmo-
New Greenhouse Gas Threat                                                                                   sphere varies from 2% to 16%, de-
And you thought carbon dioxide was bad for the earth’s climate!                                             pending on what types of emissions-
                                                                                                            control systems the manufacturers use.



W
                                                                                                               Manufacturers have many options
          hat do solar panels and                       now responsible for only 0.04% of                   for controlling emissions. Emissions-
          global warming have in                        human-induced global warming                        reduction systems on the market to-
          common?                                       compared with the 60% attributable                  day can capture the escaping NF3 for
   The answer: Both are produced                        to CO2 emissions, its share could in-               later reuse or destroy it before it can
with nitrogen trifluoride (NF3), a gas                  crease exponentially. The report                    leave the facility. Manufacturers can
that is 17,000 times more effective                     notes that NF 3’s atmospheric pres-                 also substitute more earth-friendly
than carbon dioxide at trapping at-                     ence is growing by 11% a year.                      chemicals. The UN report notes that
mospheric heat, according to geo-                         United Nations officials share                    Toshiba Matsushita Display, Sam-
chemistry professor Ray Weiss and a                     Weiss’s concerns. In 2008, the UN’s                 sung, and LG all opt for fluorine,
team of researchers at the University                   Framework Convention on Climate                     which has no greenhouse-gas poten-
of California–San Diego Scripps In-                     change added NF3 to a list of gases                 tial and no life-span in the atmo-
stitution of Oceanography.                              that the Kyoto Protocol should regu-                sphere.
   Weiss and his team expect NF3 to                     late. The Kyoto Protocol, which is                     Fluorine has drawbacks, though,
become a bigger problem in the near                     due to be succeeded by a new cli-                   in cost and legal liability: It is highly
future because it is used in the man-                   mate treaty in 2012, currently sets no              toxic and cannot be transported off-
ufacturing of three highly popular                      official limit on NF3.                              site. The UN report evinces skepti-
products: LCD televisions, computer                       According to the UNFCC, manu-                     cism that most companies are goi
				
DOCUMENT INFO
Description: Solar panels and global warming have something in common. Both are produced with nitrogen trifluoride (NF3), a gas that is 17,000 times more effective than carbon dioxide at trapping atmospheric heat, according to geochemistry professor Ray Weiss and a team of researchers at the University of California?San Diego Scripps Institution of Oceanography. Weiss and his team expect NF3 to become a bigger problem in the near future because it is used in the manufacturing of three highly popular products: LCD televisions, computer circuits, and thin-film solar cells. Manufacturers have many options for controlling emissions. Emissions-reduction systems on the market today can capture the escaping NF3 for later reuse or destroy it before it can leave the facility. The only hope is to add NF3 to the greenhouse gases prescribed by Kyoto.
BUY THIS DOCUMENT NOW PRICE: $6.95 100% MONEY BACK GUARANTEED
PARTNER ProQuest LLC
ProQuest creates specialized information resources and technologies that propel successful research, discovery, and lifelong learning.