In:
Asia-Pacific Journal of Chemical Engineering, Wiley, Vol. 17, No. 5 ( 2022-09)
Abstract:
Many CO 2 sorbents have performance degradation issues in humid environment. The recently developed moisture swing sorbent, initially used for CO 2 capture from ambient air, faces the same problem of high moisture sensitivity in the adsorption environment with very dilute CO 2 concentration (i.e., air). However, the performance of the sorbent, especially its moisture sensitivity, at relative high concentrations of CO 2 , is still unknown. In this work, the adsorption performance of a resin‐based ion‐exchange membrane loaded with CO 3 2− (a typical moisture swing sorbent) was investigated in a series of isothermal equilibrium experiments at varying CO 2 concentrations and relative humidity. The results showed that the moisture sensitivity of the adsorption capacity of the ion‐exchange membrane decreased with the initial CO 2 concentration, especially when the initial CO 2 concentration was above 4%. The competition mechanism of H 2 O and CO 2 molecules in the membrane material was analyzed by the modified dynamic adsorption model. The present work indicates that the resin‐based ion‐exchange membrane could be used for carbon dioxide removal in a lot humid environments with relatively high CO 2 concentration, such as fruit and vegetable storage room, raw natural gas, and flue gas.
Type of Medium:
Online Resource
ISSN:
1932-2135
,
1932-2143
Language:
English
Publisher:
Wiley
Publication Date:
2022
detail.hit.zdb_id:
2276947-X
Permalink