Biomass: Can Renewable Power Grow on Trees?
The oldest and most prevalent source of renewable energy known to man, biomass is already a mainstay of energy production in the United States and elsewhere. Since such a wide variety of biomass resources is available—from trees and grasses to forestry, agricultural and urban wastes—biomass promises to play a continuing role in providing power and heat for millions of people around the world.
According to the non-profit Union of Concerned Scientists (UCS), biomass is not only a renewable energy source but a carbon neutral one as well, because the energy it contains comes from the sun. When plant matter is burned, it releases the sun’s energy originally captured through photosynthesis. “In this way, biomass functions as a sort of natural battery for storing solar energy,” reports UCS. As long as biomass is produced sustainably—with only as much grown as is used—the “battery” lasts indefinitely.
While biomass is most commonly used, especially in developing countries, as a source of heat so families can stay warm and cook meals, it can also be utilized as a source of electricity. Steam captured from huge biomass processing facilities is used to turn turbines to generate electricity. Of course, biomass is also a “feedstock” for several increasingly popular carbon-neutral fuels, including ethanol and biodiesel.
CONTACTS: UCS ; USA Biomass Power Producers Alliance
Continue Reading at Scientific America
Photo: extranoise/Flickr
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Related causes: Environment
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