Low temperature and moisture swing sorption of CO2 from ambient air using a Na-based adsorbent

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    Abstract

    The continuous increase of the carbon dioxide concentration in the atmosphere is a recognized problem that will lead the humanity to catastrophic scenarios unless it is drastically reduced. One option to tackle this issue is to retrieve CO2 directly from ambient air, which has the advantage that it treats any emission regardless of their source. In most cases, the regeneration of the CO2 adsorbent is the step that consumes most of the energy in the entire process. At the same time the regeneration step should produce a valuable product, such as 100% pure CO2 for its use in subsequent chemical processes or CO2-enriched air that can be used in a greenhouse for growing plants.
    In the present work, CO2 adsorbents comprised of sodium carbonate loaded over activated carbon honeycombs are set to CO2 adsorption cycles from simulated air to convert them into the bicarbonate. The objective of the study is to get insight of the yield and the rate of regeneration of the adsorbent via a low temperature and water vapor pressure swing using simulated air as sweeping gas. For this purpose, series of desorption experiments were performed at different isothermal and constant water vapor conditions to determine their influence in the CO2 release.
    Original languageEnglish
    Publication statusPublished - 18 Jul 2017
    EventCarbon Management Technology Conference 2017: Global CCUS Innovation Nexus - Hilton Americas, Houston, United States
    Duration: 17 Jul 201720 Jul 2017
    http://fscarbonmanagement.org/cmtc/2017

    Conference

    ConferenceCarbon Management Technology Conference 2017
    Abbreviated titleCMTC 2017
    CountryUnited States
    CityHouston
    Period17/07/1720/07/17
    Internet address

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