Amino Acid Modified Macroreticular Anion Exchange Resins for CO2 Adsorption

Da-Niu Cai; Kuan Huang; Xiao-Min Zhang; Xing-Bang Hu; You-Ting Wu

doi:10.1252/jcej.14we188

Separation Engineering

Amino Acid Modified Macroreticular Anion Exchange Resins for CO₂ Adsorption

Da-Niu Cai, Kuan Huang, Xiao-Min Zhang, Xing-Bang Hu, You-Ting Wu

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Keywords: CO₂ Adsorption, Amino Acid, Ion Exchange Resin, Solid Sorbent, Immobilization

JOURNAL RESTRICTED ACCESS

2015 Volume 48 Issue 4 Pages 268-275

DOI https://doi.org/10.1252/jcej.14we188

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Abstract

Amino acids were used to modify macroreticular ion exchange resin for the adsorptive capture of CO₂. Adsorption isotherms, adsorption rate curves, heats of adsorption, and gas separation performance were determined. It is found that the adsorption capacity of the resin increases significantly after the loading of amino acids. The adsorption progresses rapidly and reaches equilibrium within 3 min. The adsorption capacity decreases with the increasing temperature, and room temperature is a suitable condition that enables high adsorption of CO₂. The adsorbent can be promoted by water vapor in removing CO₂ effectively from gas mixtures. Ten continuous adsorption–desorption cycles was performed, showing that the adsorbent is of good regeneration performance and the adsorption capacity keeps at about 0.9 mmol/g after regeneration.

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