Natural Calcium‐Based Residues for Carbon Dioxide Capture in a Bubbling Fluidized‐Bed Reactor

다국어 초록 (Multilingual Abstract)

Used clamshells (Paphia undulata), as a precursor of calcium oxide (CaO) sorbents, were employed for carbon dioxide (CO2) adsorption in a bubbling fluidized‐bed reactor. To find the optimal calcination conditions, a 2k experimental design was used to vary the ground clamshell particle size, heating rate, and calcination time at 950 °C under a nitrogen atmosphere. The heating rate was the most significant factor affecting the CO2 adsorption capacity of the obtained CaO sorbent. The maximum CO2 adsorption capacity of the CaO obtained under these study conditions was higher than that of commercial CaO.
Reducing the amount of industrially emitted CO2 is increasingly important because of global warming. This study investigates calcium oxide as a CO2 adsorbent in fluidized‐bed systems. CaO can be generated from the decomposition of calcium carbonate, which is abundant throughout nature. Using such natural calcium‐based materials can help reduce agricultural waste and support ecofriendly materials.