Abstract
In this paper, a new adsorbent was investigated for carbon dioxide adsorption from a combination of two polymers, industrial polyacrylic nitrile (PAN) and industrial polyurethane (PU). PAN/PU nanofibers were prepared by electrospinning and successfully bonded to Glycidyl methacrylate (GMA). After, amination was performed with ethanolamine (EA) to make a functional group. Dynamic CO2 adsorption experiments were performed in a fixed-bed column with a mixture of two CO2/N2 gases at a concentration of 5% CO2 at atmospheric pressure and ambient temperature. The results showed the highest adsorption capacity of 2.98 mmol/g for amination with ethanolamine (168.63% degree of amination, 30 kGy radiation dose and 167.92% degree of grafting). Satisfactory results were obtained by predicting and fitting the breakthrough curves of CO2 adsorption of experimental data with Bohart-Adams, Thomas, Yoon Nelson and Yan models. Also, four adsorption–desorption cycles at low temperatures have confirmed the applicability of this adsorbent.
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