Of the bacterial isolates found in the Arctic that are able to degrade PCBs, none used compounds such as 2-chlorobiphenyl, 3-chlorobiphenyl, camphor, citronellol, cymene, dehydroabietic acid, limonene, methanol, n-hexadecane, pentachlorophenol, phenol, or pinene as primary growth substrates (Master and Mohn 1998).
In the 20th century, demand for electricity led to the consideration of geothermal power as a generating source. Prince Piero Ginori Conti tested the first geothermal power generator on 4 July 1904, at the same Larderello dry steam field where geothermal acid extraction began. It successfully lit four light bulbs. Later, in 1911, the world's first commercial geothermal power plant was built there.
There are two major types of geothermal resources: dry steam and hot water 18 18 Duffield and Sass (2003). Environmental, Health, and Safety Guidelines GEOTHERMAL POWER GENERATION APRIL 30, 2007 13 WORLD BAN K GROUP binary cycle system involving the use of a secondary fluid, as explained below.here are two major types of geothermal resources: dry steam and hot water 18 18 Duffield and Sass (2003). Environmental, Health, and Safety Guidelines GEOTHERMAL POWER GENERATION APRIL 30, 2007 13 WORLD BAN K GROUP binary cycle system involving the use of a secondary fluid, as explained below.