New ice provides an eco-friendly way for putting out firesApril 27th, 2009 - 2:00 pm ICT by ANI
Washington, April 27 (ANI): In a new research, scientists in Japan have reported the development of a new type of ice that may provide a more efficient, environmentally-friendly method for putting out fires, including out-of control blazes that destroy homes and forests.
Toshihisa Ueda and colleagues note in the new study that firefighters have used water and carbon dioxide (CO2) as fire extinguishing agents for decades.
That knowledge led the scientists on a quest to see if carbon dioxide hydrates, frozen crystals made of water and CO2 bonded together, may serve as promising fire-suppressing materials.
Such icy chunks occur naturally in some parts of the world, including hydrates containing methane.
Methane hydrates are a potential new source of natural gas, and are renowned as the “ice that burns.”
They burst into flame when ignited.
To test their idea, the scientists used a special reactor to produce tiny pellets of carbon dioxide hydrates in the laboratory.
They compared the fire-suppressing performance of these hydrates to similar-sized pellets made of normal ice (frozen water) and dry ice (frozen CO2) after sprinkling them onto several small, carefully controlled fires.
The hydrates extinguished flames faster than the other two substances, according to the researchers.
The hydrates also used less water than ordinary ice and released less carbon dioxide than dry ice, they note.
Grinding the pellets into smaller pieces boosted their flame-fighting efficiency, the researchers said. (ANI)
- 'Dry water' could offer new way to absorb and store CO2, fight global warming - Aug 26, 2010
- Shrinking ice sheet may free methane reserves - Aug 30, 2012
- NASA spacecraft detects significant changes in Mars' atmosphere - Apr 22, 2011
- Scientists find comet that uses 'dry ice as jet fuel' - Nov 11, 2010
- Methane under permafrost could speed up global warming 20-fold - Sep 03, 2009
- New discovery allows electricity to be used to extinguish fires - Mar 28, 2011
- Global warming may initiate release of underground methane into atmosphere - Sep 03, 2009
- Disappearing ice altering ecosystem subtly - Apr 09, 2012
- Ice that burns may provide clean, sustainable energy in future - Mar 24, 2009
- Abrupt thaw in permafrost heightens climatic threat - Dec 04, 2011
- Using Mother Nature's method to save oceans' marine life - Jan 20, 2011
- Alaska wildfire may impact climate - Jul 29, 2011
- Methane leak from Arctic Shelf may be much larger and faster than anticipated - Mar 05, 2010
- Three more missions to Mars planned - Nov 24, 2011
- Mars CO2 leak linked to existence of life - Oct 11, 2010
Tags: blazes, carbon dioxide, chunks, co2, dry ice, fire extinguishing agents, firefighters, flame, flames, forests, frozen crystals, frozen water, methane hydrates, natural gas, putting out fires, reactor, research scientists, smaller pieces, tiny pellets, ueda