Gama et al. (2024): Process Operability Analysis of Membrane-Based Direct Air Capture for Low-Purity CO2 Production

Vitor Gama, Beatriz Dantas, Oishi Sanyal, Fernando V. Lima IN: ACS Engineering Au, https://doi.org/10.1021/acsengineeringau.3c00069

This study investigates the feasibility of using membranes as direct air capture (DAC) technology to extract CO₂ from atmospheric air to produce low-purity CO₂. In this work, a two-stage hollow fiber membrane module process is designed and modeled using the AVEVA Process Simulation platform to produce a low-purity (≈5%) CO₂ permeate stream. Such low-purity CO₂ streams could have several possible applications such as algae growth, catalytic oxidation, and enhanced oil recovery. An operability analysis is performed by mapping a feasible range of input parameters, which include membrane surface area and membrane performance metrics, to an output set, which consists of CO₂ purity, recovery, and net energy consumption.

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