Aerosol and Air Quality Research· 2012Q2· Review
A Review of CO2 Capture by Absorption and Adsorption
- 1,710citations
- Q2SCImago
- 2012year
Short summary
This review compares chemical absorption and adsorption as post-combustion CO2 capture methods for power plants, highlighting key performance metrics and materials.
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Key points
- Chemical absorption and adsorption are the most suitable CO2 capture technologies for post-combustion power plants.
- Absorption process concerns include capture efficiency, absorption rate, regeneration energy, and absorber volume.
- Adsorption concerns include adsorbent cost, rate, capacity, and thermal stability.
- Various absorbents (ionic liquids, alkanolamines) and adsorbents (mesoporous solids, polyamines, aminosilanes) are reviewed.
AI-generated from the title and abstract; the full text is not read.
Abstract
Global warming resulting from the emission of greenhouse gases, especially CO2, has become a widespread concern in the recent years. Though various CO2 capture technologies have been proposed, chemical absorption and adsorption are currently believed to be the most suitable ones for post-combustion power plants. The operation of the chemical absorption process is reviewed in this work, together with the use of absorbents, such as the ionic liquid, alkanolamines and their blended aqueous solutions. The major concerns for this technology, including CO2 capture efficiency, absorption rate, energy required in regeneration, and volume of absorber, are addressed. For adsorption, in addition to physical adsorbents, various mesoporous solid adsorbents impregnated with polyamines and grafted with aminosilanes are reviewed in this work. The major concerns for selection of adsorbent, including cost, adsorption rate, CO2 adsorption capacity, and thermal stability, are compared and discussed. More effective and less energy-consuming regeneration techniques for CO2-loaded adsorbents are also proposed. Future works for both absorption and adsorption are suggested.
The authors' abstract, as published at the source. Aerosol and Air Quality Research, 2012 · DOI ↗
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Field: Mechanical Engineering
Mechanical EngineeringEngineering