Biocatalytic carbon capture via reversible reaction cycle catalyzed by isocitrate dehydrogenase

Shunxiang Xia, Benjamin Frigo-Vaz, Xueyan Zhao, Jungbae Kim, Ping Wang

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The practice of carbon capture and storage (CCS) requires efficient capture and separation of carbon dioxide from its gaseous mixtures such as flue gas, followed by releasing it as a pure gas which can be subsequently compressed and injected into underground storage sites. This has been mostly achieved via reversible thermochemical reactions which are generally energy-intensive. The current work examines a biocatalytic approach for carbon capture using an NADP(H)-dependent isocitrate dehydrogenase (ICDH) which catalyzes reversibly carboxylation and decarboxylation reactions. Different from chemical carbon capture processes that rely on thermal energy to realize purification of carbon dioxide, the biocatalytic strategy utilizes pH to leverage the reaction equilibrium, thereby realizing energy-efficient carbon capture under ambient conditions. Results showed that over 25 mol of carbon dioxide could be captured and purified from its gas mixture for each gram of ICDH applied for each carboxylation/decarboxylation reaction cycle by varying pH between 6 and 9. This work demonstrates the promising potentials of pH-sensitive biocatalysis as a green-chemistry route for carbon capture.

Original languageEnglish
Pages (from-to)147-150
Number of pages4
JournalBiochemical and Biophysical Research Communications
Volume452
Issue number1
DOIs
Publication statusPublished - 2014 Sep 12

Fingerprint

Isocitrate Dehydrogenase
Carbon capture
Carbon
Carbon Dioxide
Carboxylation
Decarboxylation
Gases
Biocatalysis
Thermal energy
NADP
Flue gases
Gas mixtures
Purification
Hot Temperature

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Cell Biology
  • Molecular Biology

Cite this

Biocatalytic carbon capture via reversible reaction cycle catalyzed by isocitrate dehydrogenase. / Xia, Shunxiang; Frigo-Vaz, Benjamin; Zhao, Xueyan; Kim, Jungbae; Wang, Ping.

In: Biochemical and Biophysical Research Communications, Vol. 452, No. 1, 12.09.2014, p. 147-150.

Research output: Contribution to journalArticle

Xia, Shunxiang ; Frigo-Vaz, Benjamin ; Zhao, Xueyan ; Kim, Jungbae ; Wang, Ping. / Biocatalytic carbon capture via reversible reaction cycle catalyzed by isocitrate dehydrogenase. In: Biochemical and Biophysical Research Communications. 2014 ; Vol. 452, No. 1. pp. 147-150.
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