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What A Week It Was: Apocadocuments from
View By Scenario:
Species Collapse:(6)
Plague/Virus:(1)
Climate Chaos:(12)
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This Week's Top Ten Very Scary Tags:
oil issues  ~ carbon emissions  ~ contamination  ~ carbon sequestration  ~ ecosystem interrelationships  ~ ocean warming  ~ global warming  ~ dead zones  ~ corporate farming  ~ heavy metals  ~ toxic buildup  



ApocaDocuments (3) matching "carbon sequestration" from this week
[see full week] ~ [see all stories tagged "carbon sequestration"]
Sun, Jul 4, 2010
from New York Times:
Could Crystals Sponge Up the Carbon?
As a climate change prevention strategy, carbon capture and storage is nowhere near ready for prime time. On the storage side of the equation, major questions remain on how and where to sequester the billions of tons of gas produced by power plants and industry every year. Another stumbling block, known as the parasitic energy cost, is the amount of energy needed to strip carbon out of power plant emissions. Carbon capture technologies being tested today, like amine scrubbing, exact an energy penalty as high as 30 percent, a vast and perhaps untenable expense to utilities and society. Yet a breakthrough in chemistry may be able to radically reduce the cost of stripping carbon from power plant emissions, potentially making carbon capture and storage a far more realistic climate change solution. That is the hope, at least, of researchers studying a remarkable class of materials called metal-organic frameworks.... A single gram, unfolded and flattened, could cover a football field. And most promisingly, these crystals can be adjusted to absorb specific molecules like carbon dioxide.... "We think we can modify the surface so it will cause just the carbon dioxide to stick," Dr. Long said in an interview. "It would be a sort of carbon-dioxide selective sponge." ...


Crystals already balanced my aura, so I'm not surprised.

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Sat, Jul 3, 2010
from SolveClimate:
IEA: $46 Trillion Roadmap for Halving Global Emissions a "Bargain"
Memo to the planet from the International Energy Agency: Buckle down and speed up the nascent low-carbon revolution. Top thinkers from the energy watchdog presented an ambitious 40-year pathway to halve the world's carbon emissions during a Thursday rollout at the National Press Club. Indeed, weaning the globe of its fossil fuel dependency will require ingenuity, cooperation and tens of trillions of dollars. But IEA maintains that bumping up investments in renewables, nuclear power and a smart electric grid, and perfecting technologies such as carbon sequestration are the most reasonable and reachable course available to keep Earth's temperature stable and arrest the severe impacts climate scientists agree are imminent--and already occurring.... In addition, the plan counts on the rather rapid maturation of a technology still in the test phases--carbon capture and sequestration. The catch is that IEA's proposal calls for constructing 30 new nuclear plants and outfitting 35 coal-fired plants with the technology to capture carbon emissions and bury them underground every year through 2050. ...


Some days these "all it would take to save the world is..." stories are the saddest of all.

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Mon, Jun 28, 2010
from Grist:
'Carbon storage' faces leak dilemma, study finds
Dreams of braking global warming by storing carbon emissions from power plants could be undermined by the risk of leakage, according to a study published on Sunday. Rich countries have earmarked tens of billions of dollars of investment in carbon capture and storage (CCS), a technology that is still only at an experimental stage. With CCS, carbon dioxide would be snared at source from plants that are big burners of oil, gas, and coal. Instead of being released into the atmosphere, where it would contribute to global warming, the gas would be buried in the deep ocean or piped into underground chambers such as disused gas fields.... Storing CO2 in the ocean will contribute to acidification of the sea, with dangers that reverberate up the food chain, says its author, Gary Shaffer, a professor at the Danish Centre for Earth System Science in Humlebaek, Denmark. It also carries a higher risk of being returned to the atmosphere by ocean currents and storms. Underground storage is a better option, but only if the geological chamber does not have a significant leak or is not breached by an earthquake or some other movement, says the paper.... To offset any bigger leak, re-sequestration would be needed -- in other words, grabbing an equivalent amount of CO2 from the air and storing it. But this would be a cost burden that could last for millennia. ...


Guess we better work on that "clean coal" thing.

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