Abstract:
:To enhance the capture of low-level indoor CO2, a commercial zeolite (13X) was modified with alkali and alkaline earth metals using an ion-exchange method. Although the calcium-impregnated sorbent (zeo-Ca) showed the largest adsorption capacity, with a strong binding force for carbon dioxide, its regeneration by heat treatment was very difficult. Moisture in the gas flow caused significant decreases in CO2 adsorption capability as well as in the lifetime of the adsorbents. As for the regeneration gas, the test showed that nitrogen would hinder the CO2 adsorption more significantly than helium gas. Water vapour and nitrogen gas molecules are apt to competitively occupy the available sites of the adsorbent over the CO2 molecules.
journal_name
Environ Technoljournal_title
Environmental technologyauthors
Lee KM,Lim YH,Jo YMdoi
10.1080/09593330.2011.551837subject
Has Abstractpub_date
2012-01-01 00:00:00pages
77-84issue
1-3eissn
0959-3330issn
1479-487Xjournal_volume
33pub_type
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