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'biochar' een uitvinding van indianen uit de amazonen als modern wapen tegen het broeikaseffect


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DePurpereWolf

    DePurpereWolf


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Geplaatst op 14 januari 2010 - 10:42

From the Ancient Amazonian Indians: 'Biochar' as a Modern Weapon Against Global Warming

Scientists are reporting that "biochar" -- a material that the Amazonian Indians used to enhance soil fertility centuries ago -- has potential in the modern world to help slow global climate change. Mass production of biochar could capture and sock away carbon that otherwise would wind up in the atmosphere as carbon dioxide, the main greenhouse gas.

Their report appears in ACS' Environmental Science & Technology, a bi-weekly journal.

Kelli Roberts and colleagues note that biochar is charcoal produced by heating wood, grass, cornstalks or other organic matter in the absence of oxygen. The heat drives off gases that can be collected and burned to produce energy. It leaves behind charcoal rich in carbon.

Amazonian Indians mixed a combination of charcoal and organic matter into the soil to improve soil fertility, a fact that got the scientists interested in studying biochar's modern potential.

Bron: Science Daily

Lees verder: http://www.scienceda...t=Google Reader

Wetenschappelijk artikel: DOI: 10.1021/es902266r

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