Continuous Modular Biomimetic Utilization of Carbon Dioxide toward Multi- and Chemoenzymatic Systems

Jieun Park, Ee Taek Hwang, Bo Kuk Seo, Man Bock Gu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This study shows the preparation and application of modular biomimetic carbon dioxide utilization of multi- and chemoenzymatic systems for long-term stable continuous operation. The system is assembled by enzyme immobilization on the silica-shell surface of the hybrid microbeads forming stabilized carbonic anhydrase (CA) and phosphoenolpyruvate carboxylase (PEPCase) microbeads, respectively. The CA and PEPCase microbeads were very stable, preserving 85% of their initial activity over more than 30 days. In addition, both hybrid microbeads were repeatedly used successfully for more than 20 cycles of reaction, and they still remained active with facile magnetic separability at room temperature. In addition, the CA and PEPCase microbeads were employed within a modular enzyme reactor system to show its long-term and stable use in the continuous and/or simultaneous production of oxaloacetate (OAA) and CaCO3 from a continuously supplied CO2 solution. It was found that the production of OAA and CaCO3 was stable for more than 24 h and 6 days, respectively. This is a demonstration study of both repeated-batch and continuous modes for stable CO2 utilization and sequestration biomimetically by using stabilized multi- and chemoenzymatic modular catalysis systems.

Original languageEnglish
Pages (from-to)6175-6181
Number of pages7
JournalACS Catalysis
Volume6
Issue number9
DOIs
Publication statusPublished - 2016 Sep 2

Fingerprint

Carbonic anhydrase
Carbonic Anhydrases
Biomimetics
Carbon Dioxide
Oxaloacetic Acid
Carbon dioxide
Phosphoenolpyruvate Carboxylase
Enzyme immobilization
Silicon Dioxide
Catalysis
Demonstrations
Enzymes
Silica
Temperature

Keywords

  • chemoenzyme system
  • CO utilization
  • continuous modular enzyme reactor
  • enzyme stabilization
  • multienzyme system

ASJC Scopus subject areas

  • Catalysis

Cite this

Continuous Modular Biomimetic Utilization of Carbon Dioxide toward Multi- and Chemoenzymatic Systems. / Park, Jieun; Hwang, Ee Taek; Seo, Bo Kuk; Gu, Man Bock.

In: ACS Catalysis, Vol. 6, No. 9, 02.09.2016, p. 6175-6181.

Research output: Contribution to journalArticle

Park, Jieun ; Hwang, Ee Taek ; Seo, Bo Kuk ; Gu, Man Bock. / Continuous Modular Biomimetic Utilization of Carbon Dioxide toward Multi- and Chemoenzymatic Systems. In: ACS Catalysis. 2016 ; Vol. 6, No. 9. pp. 6175-6181.
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