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Title: Direct capture of CO 2 from ambient air

Abstract

The increase in the global atmospheric CO 2 concentration resulting from over a century of combustion of fossil fuels has been associated with significant global climate change. With the global population increase driving continued increases in fossil fuel use, humanity’s primary reliance on fossil energy for the next several decades is assured. Traditional modes of carbon capture such as precombustion and postcombustion CO 2 capture from large point sources can help slow the rate of increase of the atmospheric CO 2 concentration, but only the direct removal of CO 2 from the air, or “direct air capture” (DAC), can actually reduce the global atmospheric CO 2 concentration. The past decade has seen a steep rise in the use of chemical sorbents that are cycled through sorption and desorption cycles for CO 2 removal from ultradilute gases such as air. This Review provides a historical overview of the field of DAC, along with an exhaustive description of the use of chemical sorbents targeted at this application. Solvents and solid sorbents that interact strongly with CO 2 are described, including basic solvents, supported amine and ammonium materials, and metal-organic frameworks (MOFs), as the primary classes of chemical sorbents. Hypothetical processes for themore » deployment of such sorbents are discussed, as well as the limited array of technoeconomic analyses published on DAC. Overall, it is concluded that there are many new materials that could play a role in emerging DAC technologies. Furthermore, these materials need to be further investigated and developed with a practical sorbent-air contacting process in mind if society is to make rapid progress in deploying DAC as a means of mitigating climate change.« less

Authors:
 [1];  [2];  [2];  [2]
  1. Georgia Inst. of Technology, Atlanta, GA (United States). School of Chemical and Biomolecular Engineering; Rey Juan Carlos Univ., Madrid (Spain). Dept. of Chemical and Environmental Technology
  2. Georgia Inst. of Technology, Atlanta, GA (United States). School of Chemical and Biomolecular Engineering
Publication Date:
Research Org.:
Georgia Inst. of Technology, Atlanta, GA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1306691
Grant/Contract Number:
SC0012577
Resource Type:
Journal Article: Published Article
Journal Name:
Chemical Reviews
Additional Journal Information:
Journal Volume: 116; Journal Issue: 19; Journal ID: ISSN 0009-2665
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

Sanz-Perez, Eloy S., Murdock, Christopher R., Didas, Stephanie A., and Jones, Christopher W. Direct capture of CO2 from ambient air. United States: N. p., 2016. Web. doi:10.1021/acs.chemrev.6b00173.
Sanz-Perez, Eloy S., Murdock, Christopher R., Didas, Stephanie A., & Jones, Christopher W. Direct capture of CO2 from ambient air. United States. doi:10.1021/acs.chemrev.6b00173.
Sanz-Perez, Eloy S., Murdock, Christopher R., Didas, Stephanie A., and Jones, Christopher W. 2016. "Direct capture of CO2 from ambient air". United States. doi:10.1021/acs.chemrev.6b00173.
@article{osti_1306691,
title = {Direct capture of CO2 from ambient air},
author = {Sanz-Perez, Eloy S. and Murdock, Christopher R. and Didas, Stephanie A. and Jones, Christopher W.},
abstractNote = {The increase in the global atmospheric CO2 concentration resulting from over a century of combustion of fossil fuels has been associated with significant global climate change. With the global population increase driving continued increases in fossil fuel use, humanity’s primary reliance on fossil energy for the next several decades is assured. Traditional modes of carbon capture such as precombustion and postcombustion CO2 capture from large point sources can help slow the rate of increase of the atmospheric CO2 concentration, but only the direct removal of CO2 from the air, or “direct air capture” (DAC), can actually reduce the global atmospheric CO2 concentration. The past decade has seen a steep rise in the use of chemical sorbents that are cycled through sorption and desorption cycles for CO2 removal from ultradilute gases such as air. This Review provides a historical overview of the field of DAC, along with an exhaustive description of the use of chemical sorbents targeted at this application. Solvents and solid sorbents that interact strongly with CO2 are described, including basic solvents, supported amine and ammonium materials, and metal-organic frameworks (MOFs), as the primary classes of chemical sorbents. Hypothetical processes for the deployment of such sorbents are discussed, as well as the limited array of technoeconomic analyses published on DAC. Overall, it is concluded that there are many new materials that could play a role in emerging DAC technologies. Furthermore, these materials need to be further investigated and developed with a practical sorbent-air contacting process in mind if society is to make rapid progress in deploying DAC as a means of mitigating climate change.},
doi = {10.1021/acs.chemrev.6b00173},
journal = {Chemical Reviews},
number = 19,
volume = 116,
place = {United States},
year = 2016,
month = 8
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1021/acs.chemrev.6b00173

Citation Metrics:
Cited by: 27works
Citation information provided by
Web of Science

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  • The increase in the global atmospheric CO 2 concentration resulting from over a century of combustion of fossil fuels has been associated with significant global climate change. With the global population increase driving continued increases in fossil fuel use, humanity’s primary reliance on fossil energy for the next several decades is assured. Traditional modes of carbon capture such as precombustion and postcombustion CO 2 capture from large point sources can help slow the rate of increase of the atmospheric CO 2 concentration, but only the direct removal of CO 2 from the air, or “direct air capture” (DAC), can actuallymore » reduce the global atmospheric CO 2 concentration. The past decade has seen a steep rise in the use of chemical sorbents that are cycled through sorption and desorption cycles for CO 2 removal from ultradilute gases such as air. This Review provides a historical overview of the field of DAC, along with an exhaustive description of the use of chemical sorbents targeted at this application. Solvents and solid sorbents that interact strongly with CO 2 are described, including basic solvents, supported amine and ammonium materials, and metal-organic frameworks (MOFs), as the primary classes of chemical sorbents. Hypothetical processes for the deployment of such sorbents are discussed, as well as the limited array of technoeconomic analyses published on DAC. Overall, it is concluded that there are many new materials that could play a role in emerging DAC technologies. Furthermore, these materials need to be further investigated and developed with a practical sorbent-air contacting process in mind if society is to make rapid progress in deploying DAC as a means of mitigating climate change.« less
  • In this paper, a solid molecular basket sorbent, 50 wt% PEI/SBA-15 was studied for CO2 capture from gas streams with low CO2 concentration at ambient conditions. The sorbent was able to effectively and selectively capture CO2 from a gas stream containing 1% CO2 at 75 C, with a breakthrough and saturation capacity of 63.1 and 66.7 mg/g, respectively, and a selectivity of 14 for CO2/CO and 185 for CO2/Ar. The sorption performance of the sorbent was influenced greatly by the operating temperature. The CO2-TPD study showed that the sorbent could be regenerated at mild conditions (50-110 C) and was stablemore » in the cyclical operations for at least 20 cycles. Furthermore, the possibility for CO2 capture from air using the PEI/SBA-15 sorbent was studied by FTIR and proved by TPD. A capacity of 22.5 mg/g was attained at 75 C via TPD method using a simulated air with 400 ppmv CO2 in N2.« less
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  • Cited by 15