Sucking carbon dioxide out of the air: Neat idea, but impractical

More from the morons seeking to deny the biosphere the only real bounty human activity provides – the return of previously lost carbon to the carbon cycle.

Humanity is making dismal progress on curbing its greenhouse gas emissions. That’s led some scientists to dream up zany geoengineering schemes to avert drastic climate change. One promising idea involved sucking carbon dioxide out of the air. Alas, new research suggests, this isn’t very practical:

You can strip CO2 from the air with chemical filters or by boosting reactions occurring as rocks weather. Colin Axon of Brunel University in Uxbridge, UK, and Alex Lubansky at the University of Oxford estimated what it would take to remove the 30 gigatonnes of CO2 we emit every year.

That would mean processing 75,000 Gt of dry air. Scaling up proposals to filter air would use 180 Gt of clean water per year, depriving 53 million people of water, on top of the 66 per cent of the world’s population who will face water shortages by 2025.

To make matters worse, mopping up carbon dioxide with chemical filters would use an enormous amount of energy and be prohibitively expensive. A study last year in Nature pegged the cost of carbon dioxide removal at about $600 per ton, which is about seven times more pricey than even the high-end estimates of carbon taxes deemed necessary to curtail the world’s emissions.


2 responses to “Sucking carbon dioxide out of the air: Neat idea, but impractical

  1. A good read for all greenie alarmist.

    One Volcano Exposes The Massive Carbon Scheme Fraud

    Okay, here’s the bombshell. The volcanic eruption at Iceland’s Eyjafjallajokull volcano, since its first spewed volcanic ash, in just FOUR DAYS, NEGATED EVERY SINGLE EFFORT you have made in the past five years to control CO2 emissions on our planet – all of you. And now with Iceland’s Grimsvotn volcano erupting on May 21, 2011, it has been a losing battle.
    The volcanic ash emitted into the Earth’s atmosphere in just four days – yes – FOUR DAYS ONLY by that volcano in Iceland, has totally erased every single effort you have made to reduce the evil beast, carbon. And there are around 200 active volcanoes on the planet spewing out this crud at any one time – EVERY DAY.

  2. The ultimate will be when we can extract co2 from the atmosphere and strip that annoying extract oxygen in an economically viable way. I remember finding a reference to CO as a feedstock for fuel. Then I think that greenies will say it is plant food and when can’t suck co2 without hurting the environment.

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