Moisture swing sorbent for carbon dioxide capture from ambient air

Tao Wang, Klaus Lackner, Allen Wright

Research output: Contribution to journalArticle

107 Citations (Scopus)

Abstract

An amine-based anion exchange resin dispersed in a flat sheet of polypropylene was prepared in alkaline forms so that it would capture carbon dioxide from air. The resin, with quaternary ammonium cations attached to the polymer structure and hydroxide or carbonate groups as mobile counterions, absorbs carbon dioxide when dry and releases it when wet. In ambient air, the moist resin dries spontaneously and subsequently absorbs carbon dioxide. This constitutes a moisture induced cycle, which stands in contrast to thermal pressure swing based cycles. This paper aims to determine the isothermal performance of the sorbent during such a moisture swing. Equilibrium experiments show that the absorption and desorption process can be described well by a Langmuir isothermal model. The equilibrium partial pressure of carbon dioxide over the resin at a given loading state can be increased by 2 orders of magnitude by wetting the resin.

Original languageEnglish (US)
Pages (from-to)6670-6675
Number of pages6
JournalEnvironmental Science and Technology
Volume45
Issue number15
DOIs
StatePublished - Aug 1 2011
Externally publishedYes

Fingerprint

Sorbents
Carbon Dioxide
ambient air
resin
Moisture
Resins
carbon dioxide
moisture
Air
Anion Exchange Resins
Polypropylenes
carbonate group
Carbonates
Ammonium Compounds
Partial pressure
Amines
Wetting
Cations
Desorption
Polymers

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

Cite this

Moisture swing sorbent for carbon dioxide capture from ambient air. / Wang, Tao; Lackner, Klaus; Wright, Allen.

In: Environmental Science and Technology, Vol. 45, No. 15, 01.08.2011, p. 6670-6675.

Research output: Contribution to journalArticle

@article{62252b1f5005414d93f642dac930dee4,
title = "Moisture swing sorbent for carbon dioxide capture from ambient air",
abstract = "An amine-based anion exchange resin dispersed in a flat sheet of polypropylene was prepared in alkaline forms so that it would capture carbon dioxide from air. The resin, with quaternary ammonium cations attached to the polymer structure and hydroxide or carbonate groups as mobile counterions, absorbs carbon dioxide when dry and releases it when wet. In ambient air, the moist resin dries spontaneously and subsequently absorbs carbon dioxide. This constitutes a moisture induced cycle, which stands in contrast to thermal pressure swing based cycles. This paper aims to determine the isothermal performance of the sorbent during such a moisture swing. Equilibrium experiments show that the absorption and desorption process can be described well by a Langmuir isothermal model. The equilibrium partial pressure of carbon dioxide over the resin at a given loading state can be increased by 2 orders of magnitude by wetting the resin.",
author = "Tao Wang and Klaus Lackner and Allen Wright",
year = "2011",
month = "8",
day = "1",
doi = "10.1021/es201180v",
language = "English (US)",
volume = "45",
pages = "6670--6675",
journal = "Environmental Science & Technology",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "15",

}

TY - JOUR

T1 - Moisture swing sorbent for carbon dioxide capture from ambient air

AU - Wang, Tao

AU - Lackner, Klaus

AU - Wright, Allen

PY - 2011/8/1

Y1 - 2011/8/1

N2 - An amine-based anion exchange resin dispersed in a flat sheet of polypropylene was prepared in alkaline forms so that it would capture carbon dioxide from air. The resin, with quaternary ammonium cations attached to the polymer structure and hydroxide or carbonate groups as mobile counterions, absorbs carbon dioxide when dry and releases it when wet. In ambient air, the moist resin dries spontaneously and subsequently absorbs carbon dioxide. This constitutes a moisture induced cycle, which stands in contrast to thermal pressure swing based cycles. This paper aims to determine the isothermal performance of the sorbent during such a moisture swing. Equilibrium experiments show that the absorption and desorption process can be described well by a Langmuir isothermal model. The equilibrium partial pressure of carbon dioxide over the resin at a given loading state can be increased by 2 orders of magnitude by wetting the resin.

AB - An amine-based anion exchange resin dispersed in a flat sheet of polypropylene was prepared in alkaline forms so that it would capture carbon dioxide from air. The resin, with quaternary ammonium cations attached to the polymer structure and hydroxide or carbonate groups as mobile counterions, absorbs carbon dioxide when dry and releases it when wet. In ambient air, the moist resin dries spontaneously and subsequently absorbs carbon dioxide. This constitutes a moisture induced cycle, which stands in contrast to thermal pressure swing based cycles. This paper aims to determine the isothermal performance of the sorbent during such a moisture swing. Equilibrium experiments show that the absorption and desorption process can be described well by a Langmuir isothermal model. The equilibrium partial pressure of carbon dioxide over the resin at a given loading state can be increased by 2 orders of magnitude by wetting the resin.

UR - http://www.scopus.com/inward/record.url?scp=79960963821&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79960963821&partnerID=8YFLogxK

U2 - 10.1021/es201180v

DO - 10.1021/es201180v

M3 - Article

C2 - 21688825

AN - SCOPUS:79960963821

VL - 45

SP - 6670

EP - 6675

JO - Environmental Science & Technology

JF - Environmental Science & Technology

SN - 0013-936X

IS - 15

ER -