skip to main content

DOE PAGESDOE PAGES

This content will become publicly available on May 7, 2019

Title: Direct air capture of CO 2 via aqueous-phase absorption and crystalline-phase release using concentrated solar power

Using negative emissions technologies for the net removal of greenhouse gases from the atmosphere could provide a pathway to limit global temperature rises. Direct air capture of carbon dioxide offers the prospect of permanently lowering the atmospheric CO 2 concentration, providing that economical and energy-efficient technologies can be developed and deployed on a large scale. Here in this paper, we report an approach to direct air capture, at the laboratory scale, using mostly off-the-shelf materials and equipment. First, CO 2 absorption is achieved with readily available and environmentally friendly aqueous amino acid solutions (glycine and sarcosine) using a household humidifier. The CO 2-loaded solutions are then reacted with a simple guanidine compound, which crystallizes as a very insoluble carbonate salt and regenerates the amino acid sorbent. Finally, effective CO 2 release and near-quantitative regeneration of the guanidine compound are achieved by relatively mild heating of the carbonate crystals using concentrated solar power.
Authors:
 [1] ; ORCiD logo [1] ;  [1] ; ORCiD logo [1] ; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Nature Energy
Additional Journal Information:
Journal Volume: 3; Journal Issue: 7; Journal ID: ISSN 2058-7546
Publisher:
Nature Publishing Group
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 54 ENVIRONMENTAL SCIENCES
OSTI Identifier:
1460227

Brethome, Flavien M., Williams, Neil J., A Seipp, Charles, Kidder, Michelle, and Custelcean, Radu. Direct air capture of CO2 via aqueous-phase absorption and crystalline-phase release using concentrated solar power. United States: N. p., Web. doi:10.1038/s41560-018-0150-z.
Brethome, Flavien M., Williams, Neil J., A Seipp, Charles, Kidder, Michelle, & Custelcean, Radu. Direct air capture of CO2 via aqueous-phase absorption and crystalline-phase release using concentrated solar power. United States. doi:10.1038/s41560-018-0150-z.
Brethome, Flavien M., Williams, Neil J., A Seipp, Charles, Kidder, Michelle, and Custelcean, Radu. 2018. "Direct air capture of CO2 via aqueous-phase absorption and crystalline-phase release using concentrated solar power". United States. doi:10.1038/s41560-018-0150-z.
@article{osti_1460227,
title = {Direct air capture of CO2 via aqueous-phase absorption and crystalline-phase release using concentrated solar power},
author = {Brethome, Flavien M. and Williams, Neil J. and A Seipp, Charles and Kidder, Michelle and Custelcean, Radu},
abstractNote = {Using negative emissions technologies for the net removal of greenhouse gases from the atmosphere could provide a pathway to limit global temperature rises. Direct air capture of carbon dioxide offers the prospect of permanently lowering the atmospheric CO2 concentration, providing that economical and energy-efficient technologies can be developed and deployed on a large scale. Here in this paper, we report an approach to direct air capture, at the laboratory scale, using mostly off-the-shelf materials and equipment. First, CO2 absorption is achieved with readily available and environmentally friendly aqueous amino acid solutions (glycine and sarcosine) using a household humidifier. The CO2-loaded solutions are then reacted with a simple guanidine compound, which crystallizes as a very insoluble carbonate salt and regenerates the amino acid sorbent. Finally, effective CO2 release and near-quantitative regeneration of the guanidine compound are achieved by relatively mild heating of the carbonate crystals using concentrated solar power.},
doi = {10.1038/s41560-018-0150-z},
journal = {Nature Energy},
number = 7,
volume = 3,
place = {United States},
year = {2018},
month = {5}
}

Works referenced in this record:

Comprehensive Study of the Hydration and Dehydration Reactions of Carbon Dioxide in Aqueous Solution
journal, December 2009
  • Wang, Xiaoguang; Conway, William; Burns, Robert
  • The Journal of Physical Chemistry A, Vol. 114, Issue 4, p. 1734-1740
  • DOI: 10.1021/jp909019u

Capture of Carbon Dioxide from Air and Flue Gas in the Alkylamine-Appended Metal–Organic Framework mmen-Mg2(dobpdc)
journal, April 2012
  • McDonald, Thomas M.; Lee, Woo Ram; Mason, Jarad A.
  • Journal of the American Chemical Society, Vol. 134, Issue 16, p. 7056-7065
  • DOI: 10.1021/ja300034j

CO2 Capture Using Phase-Changing Sorbents
journal, March 2012
  • Perry, Robert J.; Wood, Benjamin R.; Genovese, Sarah
  • Energy & Fuels, Vol. 26, Issue 4, p. 2528-2538
  • DOI: 10.1021/ef300079w

Process design and energy requirements for the capture of carbon dioxide from air
journal, December 2006
  • Baciocchi, Renato; Storti, Giuseppe; Mazzotti, Marco
  • Chemical Engineering and Processing: Process Intensification, Vol. 45, Issue 12, p. 1047-1058
  • DOI: 10.1016/j.cep.2006.03.015