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Modeling of Carbon Capture Process

  • Type:
    Conference Presentation
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    AIChE Member Credits 0.5
    AIChE Members $19.00
    AIChE Graduate Student Members Free
    AIChE Undergraduate Student Members Free
    Non-Members $29.00
  • Conference Type:
    AIChE Spring Meeting and Global Congress on Process Safety
  • Presentation Date:
    April 12, 2022
  • Duration:
    30 minutes
  • Skill Level:
    Intermediate
  • PDHs:
    0.50

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An adsorbent’s desorption kinetics and adsorption capacity are key parameters in planning, modeling and designing direct air capture (DAC) systems. Determining these parameters reveals the thermodynamics requirements as well as the properties that favor the CO2 adsorption process. This research work presents a review of prior research along with new experimental data on the desorption kinetics and adsorption capacity of activated carbon and zeolite for CO2 capture. Commercial grade activated carbon and zeolite were studied by thermogravimetric analysis (TGA). Each adsorbent was subjected to four cycles with each cycle consisting of equilibration, adsorption and desorption. The adsorbents were studied at 0.04, 1, 3, and 5% of CO2 concentration to evaluate the adsorption behavior with variable amount of CO2 that are representative of DAC processes. At 0.04% of CO2 concentration, activated carbon and zeolite were observed to have a desorption activation energy of 141.14 and 28.11 kJ/mol, respectively. Activated carbon and zeolite at a partial pressure of 0.04% CO2 resulted in an adsorption capacity of 5.79 and 2.9 mg CO2 /g, respectively. The TGA results from this study support efficient CO2 adsorption processes are attained when employing higher partial pressure of CO2.
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Checkout

Checkout

Do you already own this?

Pricing


Individuals

AIChE Member Credits 0.5
AIChE Members $19.00
AIChE Graduate Student Members Free
AIChE Undergraduate Student Members Free
Non-Members $29.00
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