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Moving beyond 90% Carbon Capture by Highly Selective Membrane Processes

Journal Article · · Membranes
 [1];  [2]
  1. The Ohio State Univ., Columbus, OH (United States); The Ohio State University
  2. The Ohio State Univ., Columbus, OH (United States)
A membrane-based system with a retentate recycle process in tandem with an enriching cascade was studied for >90% carbon capture from coal flue gas. A highly CO2-selective facilitated transport membrane (FTM) was utilized particularly to enhance the CO2 separation efficiency from the CO2-lean gases for a high capture degree. A techno-economic analysis showed that the retentate recycle process was advantageous for ≤90% capture owing to the reduced parasitic energy consumption and membrane area. At >90% capture, the enriching cascade outperformed the retentate recycle process since a higher feed-to-permeate pressure ratio could be applied. An overall 99% capture degree could be achieved by combining the two processes, which yielded a low capture cost of USD47.2/tonne, whereas that would be USD 42.0/tonne for 90% capture. This FTM-based approach for deep carbon capture and storage can direct air capture for the mitigation of carbon emissions in the energy sector.
Research Organization:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Organization:
USDOE Office of Fossil Energy (FE)
Grant/Contract Number:
FE0031731
OSTI ID:
1877553
Journal Information:
Membranes, Journal Name: Membranes Journal Issue: 4 Vol. 12; ISSN 2077-0375
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

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