NDLI: Engineered yeast for enhanced CO<sub>2</sub> mineralization

Content Provider	Royal Society of Chemistry (RSC)
Author	Barbero, Roberto Bianchi, Daniele Carnelli, Lino Belcher, Angela Simon, Anna Monforte, Alessandra d'Arminio Riccò, Moreno Kao, Albert
Copyright Year	2013
Abstract	In this work, a biologically catalysed CO2 mineralization process for the capture of CO2 from point sources was designed, constructed at a laboratory scale, and, using standard chemical process scale-up protocols, was modelled and evaluated at an industrial scale. A yeast display system in Saccharomyces cerevisae was used to screen several carbonic anhydrase isoforms and mineralization peptides for their impact on CO2 hydration, CaCO3 mineralization, and particle settling rate. Enhanced rates for each of these steps in the CaCO3 mineralization process were confirmed using quantitative techniques in lab-scale measurements. The effect of these enhanced rates on the CO2 capture cost in an industrial scale CO2 mineralization process using coal fly ash as the CaO source was evaluated. The model predicts a process using bCA2-yeast and fly ash is ∼10% more cost effective per tonne of CO2 captured than a process with no biological molecules, a savings not realized by wild-type yeast and high-temperature stable recombinant CA2 alone or in combination. The levelized cost of electricity for a power plant using this process was calculated and scenarios in which this process compares favourably to CO2 capture by MEA absorption process are presented.
Starting Page	660
Ending Page	674
Page Count	15
File Format	HTM / HTML PDF
ISSN	17545692
Volume Number	6
Issue Number	2
Journal	Energy & Environmental Science
DOI	10.1039/c2ee24060b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Yeast display Carbonic anhydrase Fly ash Saccharomyces cerevisiae Tonne Ethanolamine
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Renewable Energy, Sustainability and the Environment Nuclear Energy and Engineering

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