Lab-Scale Development of a Hybrid Capture System with Advanced Membrane, Solvent System, and Process Integration Email Page
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Performer: Liquid Ion Solutions LLC
Hybrid membrane/solvent system
Hybrid membrane/solvent system
Website: Liquid Ion Solutions LLC
Award Number: FE0026464
Project Duration: 10/01/2015 – 09/30/2018
Total Award Value: $2,497,538
DOE Share: $1,998,030
Performer Share: $499,508
Technology Area: Post-Combustion Capture
Key Technology: Novel Concepts
Location: Pittsburgh, Pennsylvania

Project Description

Liquid Ion Solutions LLC, in partnership with Penn State University and Carbon Capture Scientific, will develop and validate a transformational hybrid membrane/solvent system for the capture of carbon dioxide (CO2) from flue gas. The project will build on work previously conducted by Liquid Ion Solutions in mixed-matrix membrane (MMM) development, Penn State in polymer synthesis and property optimization, and Carbon Capture Scientific in solvent systems. The hybrid technology is a two-stage CO2 capture system combining a membrane separation process and an absorption/stripping process with heat integration between the absorption column and stripping column through a heat pump cycle. Process air is used to sweep the stripper resulting in much lower regeneration temperatures and enabling heat integration to the point that no process steam is required. To reduce capital cost, a next-generation membrane technology with higher permeance will be developed. The interfacially-controlled envelope (ICE) membrane will make use of a transport zone neglected in conventional MMMs. By carefully controlling the interface between the polymer and inorganic particles within the MMM, CO2 transport will be encouraged and nitrogen transport diminished in the gap between the two phases. Since permeance is directly tied to membrane area and capital cost, the development of the ICE membranes will reduce the capital cost of the hybrid process below that of the baseline technologies. The research team will combine computer simulation with lab-scale experimentation using simulated flue gas to develop, optimize, and test ICE membranes, test the absorption column and air stripper, and complete a techno-economic analysis of the hybrid technology.

Project Benefits

By combining a new generation of membranes with greater permeance and selectivity and a hybrid process scheme, which uses a solvent technology to address the low CO2 concentration portion of the separation, the transformational technology has potential to make progress toward achieving the DOE performance goals. The combination of lab-scale experimentation on simulated flue gas with modeling and systems analysis will show the energetic and cost advantages of the hybrid technology that will accrue with further scale-up.

Contact Information

Federal Project Manager Andrew Jones:
Technology Manager Lynn Brickett:
Principal Investigator Hunaid Nulwala:


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