The promises and pitfalls of carbon capture

Ars Technica » Scientific Method 2012-11-29

The Technology Centre Mongstad carbon capture facility in Mongstad, Norway.

Extreme weather events, like Superstorm Sandy that just drenched the northeastern coast of the United States, often refocus the public's attention on climate change. With Sandy, there were no straightforward connections, partly because it’s hard to connect climate change to a single weather event. Nevertheless, the storm may leave the US public more willing to tackle some of the challenges of climate change.

One of these big challenges is mitigating carbon emissions. Industrial development, power plants, and transportation integral to our modern society all release greenhouse gases that capture heat from the sun and warm the planet. The production and consumption of energy accounts for the majority of the greenhouse gas emissions in the United States, 91 percent of which is made of carbon dioxide (CO2) from burning fossil fuels.

In a world dependent on oil, coal, and natural gas, global emissions of CO2 will continue unless we improve energy efficiency and continue replacing some of those fossil fuels with some combination of nuclear power and renewable energy like solar and wind power. Another option for emission reductions involves preventing coal-fired power plants, cement plants, and steel mills from emitting carbon dioxide in the first place. Carbon capture systems grab carbon dioxide from the flue gas and concentrate the pure CO2. Pumping that gas underground could permanently store the carbon in places other than our planet’s atmosphere.

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