Biocatalyzed Accelerated Post-combustion CO2 Capture and Stripping in Monoethanolamine

The existing solvent-mediated CO2 capture process is energy-intensive as a result of the high-temperature requirement for solvent regeneration. Therefore, improvement of solvent systems for optimized and low-energy-intensive CO2 capture and desorption is of enormous interest. In this regard, we repo...

Full description

Saved in:
Bibliographic Details
Published in:Energy & fuels 2017-10, Vol.31 (10), p.11007-11012
Main Authors: Sahoo, Prakash C, Kumar, Manoj, Singh, Amardeep, Singh, Mahendara P, Puri, Suresh K
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The existing solvent-mediated CO2 capture process is energy-intensive as a result of the high-temperature requirement for solvent regeneration. Therefore, improvement of solvent systems for optimized and low-energy-intensive CO2 capture and desorption is of enormous interest. In this regard, we report a novel matrix composed of ZnO/Fe2O3-encapsulated mesoporous silica-tethered thermostable carbonic anhydrase (CA) (designated as CA@fn-Zn/Fe/MS). The enzyme-coupled matrix was used for efficient post-combustion CO2 capture and low-energy-intensive desorption. It was observed that the use of CA@fn-Zn/Fe/MS (0.5 wt %) in 30% monoethanolamine (MEA) enhances the CO2 uptake to 0.82 mol/mol of solvent and the regeneration efficiency by 2.6 times compared to neat MEA at 30 wt %. The enzyme-coupled matrix is stable over a broad range of pH and can be used for several cycles. The development adds value to improve conventional amine-based CO2 scrubbing technology.
ISSN:0887-0624
1520-5029
DOI:10.1021/acs.energyfuels.7b01322