Navigation Links
Report: Direct removal of carbon dioxide from air likely not viable
Date:5/9/2011

Technologies for removing carbon dioxide from the atmosphere are unlikely to offer an economically feasible way to slow human-driven climate change for several decades, according to a report issued by the American Physical Society and led by Princeton engineer Robert Socolow.

"We humans should not kid ourselves that we can pour all the carbon dioxide we wish into the atmosphere right now and pull it out later at little cost," said Socolow, a professor of mechanical and aerospace engineering.

The report, issued by a committee of 13 experts, was co-chaired by Socolow and Michael Desmond, a chemist at BP. The group looked at technologies known as "Direct Air Capture," or DAC, which would involve using chemicals to absorb carbon dioxide from the open air, concentrating the carbon dioxide, and then storing it safely underground.

[The full report is available from the American Physical Society.]

In essence, the committee found that such a strategy would be far more expensive than simply preventing the emission of the carbon dioxide in the first place.

Making optimistic assumptions about initial DAC technologies, the committee concluded that, from the evidence it had seen, building and operating a system would cost at least $600 per metric ton of carbon dioxide removed from the atmosphere, for a system that could work today. Building a system big enough to compensate for the emissions of a 1,000-megawatt coal power plant would require 30 kilometers of equipment. In comparison, removing carbon dioxide from the flue gas of a coal-fired power plant would cost about $80 per ton.

As a result, the group concluded, DAC is not likely to become worthwhile until nearly all the significant point sources of carbon dioxide are eliminated.

"We ought to be developing plans to bring to an end the carbon dioxide emissions at every coal and natural gas power plant on the planet," Socolow said. Beyond using electricity more efficiently, options are to modify plants so their emissions are kept from the atmosphere or to shut them down entirely and replace them with low-carbon alternatives, he said.

"We don't have to do this job overnight. But the technologies we studied in this report, capable of removing carbon dioxide from the air, are not a substitute for addressing power plants directly," Socolow added.

The possibility of using DAC has arisen in policy discussions that contemplate a so-called "overshoot" strategy in which the target level of carbon dioxide in the atmosphere is exceeded and then reduced later through use of some air capture technology.

In its report, the group noted that, "No demonstration or pilot-scale DAC system has yet been deployed anywhere on earth, and it is entirely possible that no DAC concept under discussion today or yet to be invented will actually succeed in practice. Nonetheless, DAC has entered policy discussions and deserves close analysis."

Socolow noted that while the contents of the report serve as a warning against complacency, the experience of developing the report offers grounds for optimism. "The message of hope is that smart scientists and engineers are getting more and more interested in energy and climate problems," Socolow said.

"The committee that worked on this problem included both senior researchers and researchers starting their careers, and both industry experts and academics," he continued. "The review process elicited contributions from thirty to forty others. Everyone was a volunteer. Leading this project convinced me that scientists and engineers are poised to provide many creative strategies to reduce the risks of dangerous climate change."


'/>"/>

Contact: Steven Schultz
sschultz@princeton.edu
609-258-3617
Princeton University, Engineering School
Source:Eurekalert

Related biology news :

1. New report: Dont blame the pill for estrogen in drinking water
2. Report: Discovery networks hostage-taking a rare terror event
3. Ennova Direct Announces the Sale of its Consumer Electronics/Computer Peripheral Patent Portfolio
4. U of M scientist gets 5-year, $10 million grant to direct innovative HIV research program
5. Ennova Direct Announces the Sale of its Consumer Electronics/Computer Peripheral Patent Portfolio
6. BESC scores a first with isobutanol directly from cellulose
7. DHS Science and Technology Directorates science conference: Catastrophes and Complex Systems
8. Aware Announces Appointment of New Directors
9. Scripps Research scientist discovers natural molecule indirectly prevents stable clot formation
10. Aware Announces Appointment of New Directors
11. Direct observation of carbon monoxide binding to metal-porphyrines
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/2/2016)... PUNE, India , December 1, 2016 /PRNewswire/ ... Market by Authentication type (Fingerprint, Voice), Future Technology (Iris ... Vehicle), and Region - Global Forecast to 2021", ... be USD 442.7 Million in 2016, and is ... 2021, at a CAGR of 14.06%. ...
(Date:11/30/2016)... 2016  higi SH llc (higi) announced today ... national brands, industry thought-leaders and celebrity influencers looking ... for taking steps to live healthier, more active ... higi has built the largest self-screening health station ... people who have conducted over 185 million biometric ...
(Date:11/29/2016)... Nearly one billion matches per second with DERMALOG,s high-speed AFIS    ... ... DERMALOG is Germany's largest Multi-Biometric supplier: The company's ... Systems) ... largest Multi-Biometric supplier: The company's Fingerprint Identification System is part of an ...
Breaking Biology News(10 mins):
(Date:12/8/2016)... 2016 Savannah River Remediation LLC group ... NewTechBio,s NT-MAX Lake & Pond Sludge and ... in conjunction with Hexa Armor/ Rhombo cover manufactured ... Pollutant Discharge Elimination System requirements. The ... history of elevated pH levels, above 8.5, especially ...
(Date:12/7/2016)... ... December 07, 2016 , ... ACEA Biosciences, Inc. presented today ... clinical trial for its lead drug candidate, AC0010, at the World Conference on ... to determine the safety, antitumor activity, and recommended phase II dosage of AC0010 ...
(Date:12/7/2016)... 2016 /PRNewswire/ - OncoQuest Inc. ("OncoQuest"), a biopharmaceutical ... immunotherapeutic products for the treatment of cancer, today ... Manufacturing Development Program with Cytovance Biologics ( ... oregovomab antibody product. Supported by recent positive interim ... in ovarian cancer patients, OncoQuest has engaged Cytovance ...
(Date:12/7/2016)... The report "Acrylic Processing Aid Market by Polymer Type (PVC), Fabrication Process (Extrusion, Injection ... to 2026", published by MarketsandMarkets, the global market size was USD 645.4 Million ... an of CAGR of 6.2% between 2016 and 2026. ... ... , , ...
Breaking Biology Technology: